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 0.1.23-502d2f4 [2018-10-12 21:10:46,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:10:46,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:10:46,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-12 21:10:46,442 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:10:46,455 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:10:46,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:10:46,456 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:10:46,460 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:10:46,460 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:10:46,460 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:10:46,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:10:46,461 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:10:46,462 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:10:46,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:10:46,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:10:46,462 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:10:46,462 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:10:46,463 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:10:46,463 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:10:46,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:10:46,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:10:46,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:10:46,533 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:10:46,533 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:10:46,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-12 21:10:46,534 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_false-valid-memtrack.i_35.bpl' [2018-10-12 21:10:46,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:10:46,616 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:10:46,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:10:46,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:10:46,617 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:10:46,645 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,647 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,675 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,675 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,691 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,694 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,699 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 12.10 09:10:46" (1/1) ... [2018-10-12 21:10:46,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:10:46,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:10:46,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:10:46,712 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:10:46,713 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 12.10 09:10:46" (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 [2018-10-12 21:10:46,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:10:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:10:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:10:47,532 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:10:47,533 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 12.10 09:10:47 BoogieIcfgContainer [2018-10-12 21:10:47,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:10:47,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:10:47,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:10:47,538 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:10:47,538 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 12.10 09:10:46" (1/2) ... [2018-10-12 21:10:47,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d63aa96 and model type optional_data_creation_test04_false-valid-memtrack.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:47, skipping insertion in model container [2018-10-12 21:10:47,539 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 12.10 09:10:47" (2/2) ... [2018-10-12 21:10:47,541 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_false-valid-memtrack.i_35.bpl [2018-10-12 21:10:47,551 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:10:47,559 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:10:47,576 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:10:47,603 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:10:47,604 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:10:47,604 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:10:47,604 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:10:47,605 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:10:47,605 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:10:47,605 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:10:47,605 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:10:47,605 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:10:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-12 21:10:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-12 21:10:47,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:47,641 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] [2018-10-12 21:10:47,642 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:47,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:47,648 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-12 21:10:47,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:48,308 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-10-12 21:10:48,874 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-12 21:10:49,214 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-12 21:10:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:49,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:10:49,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-12 21:10:49,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-12 21:10:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-12 21:10:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-12 21:10:49,479 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-12 21:10:51,034 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-10-12 21:10:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:51,768 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-12 21:10:51,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-12 21:10:51,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-12 21:10:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:51,785 INFO L225 Difference]: With dead ends: 154 [2018-10-12 21:10:51,786 INFO L226 Difference]: Without dead ends: 154 [2018-10-12 21:10:51,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:10:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-12 21:10:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-12 21:10:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-12 21:10:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-12 21:10:51,837 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-12 21:10:51,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:51,838 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-12 21:10:51,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-12 21:10:51,839 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-12 21:10:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-12 21:10:51,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:51,842 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] [2018-10-12 21:10:51,842 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:51,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-12 21:10:51,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:52,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:52,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 21:10:52,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 21:10:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 21:10:52,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-12 21:10:52,602 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-12 21:10:53,378 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-12 21:10:53,876 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-12 21:10:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:54,998 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-12 21:10:55,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-12 21:10:55,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-12 21:10:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:55,010 INFO L225 Difference]: With dead ends: 177 [2018-10-12 21:10:55,010 INFO L226 Difference]: Without dead ends: 177 [2018-10-12 21:10:55,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-12 21:10:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-12 21:10:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-12 21:10:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-12 21:10:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-12 21:10:55,043 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-12 21:10:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:55,044 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-12 21:10:55,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 21:10:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-12 21:10:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-12 21:10:55,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:55,051 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] [2018-10-12 21:10:55,051 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:55,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:55,051 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-12 21:10:55,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:56,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:56,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-12 21:10:56,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-12 21:10:56,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-12 21:10:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-12 21:10:56,197 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-12 21:10:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:58,370 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-12 21:10:58,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 21:10:58,371 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-12 21:10:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:58,374 INFO L225 Difference]: With dead ends: 200 [2018-10-12 21:10:58,374 INFO L226 Difference]: Without dead ends: 200 [2018-10-12 21:10:58,376 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 [2018-10-12 21:10:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-12 21:10:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-12 21:10:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-12 21:10:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-12 21:10:58,388 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-12 21:10:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:58,389 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-12 21:10:58,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-12 21:10:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-12 21:10:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-12 21:10:58,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:58,393 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] [2018-10-12 21:10:58,393 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:58,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-12 21:10:58,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:00,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:00,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-12 21:11:00,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-12 21:11:00,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-12 21:11:00,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-12 21:11:00,376 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-12 21:11:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:03,057 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-12 21:11:03,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-12 21:11:03,061 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-12 21:11:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:03,063 INFO L225 Difference]: With dead ends: 223 [2018-10-12 21:11:03,063 INFO L226 Difference]: Without dead ends: 223 [2018-10-12 21:11:03,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 21:11:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-12 21:11:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-12 21:11:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-12 21:11:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-12 21:11:03,076 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-12 21:11:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:03,077 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-12 21:11:03,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-12 21:11:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-12 21:11:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-12 21:11:03,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:03,081 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] [2018-10-12 21:11:03,081 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:03,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-12 21:11:03,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:05,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:05,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 21:11:05,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 21:11:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 21:11:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:11:05,274 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-12 21:11:06,199 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 21:11:07,694 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-12 21:11:08,083 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 21:11:09,647 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:11:09,849 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:11:10,104 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:11:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:10,345 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-12 21:11:10,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 21:11:10,346 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-12 21:11:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:10,347 INFO L225 Difference]: With dead ends: 246 [2018-10-12 21:11:10,347 INFO L226 Difference]: Without dead ends: 246 [2018-10-12 21:11:10,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-12 21:11:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-12 21:11:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-12 21:11:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-12 21:11:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-12 21:11:10,360 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-12 21:11:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:10,361 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-12 21:11:10,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 21:11:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-12 21:11:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-12 21:11:10,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:10,366 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] [2018-10-12 21:11:10,366 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:10,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-12 21:11:10,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:12,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:12,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 21:11:12,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 21:11:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 21:11:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:11:12,477 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-12 21:11:13,713 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-12 21:11:13,947 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:11:14,191 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:11:14,349 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:11:14,562 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:11:14,717 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:11:15,310 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:11:15,614 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:11:15,834 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-12 21:11:16,022 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-12 21:11:16,315 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:11:16,539 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-12 21:11:17,184 WARN L178 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-12 21:11:17,466 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-12 21:11:17,941 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-12 21:11:18,182 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-12 21:11:18,379 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-12 21:11:18,700 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-12 21:11:18,972 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-12 21:11:19,271 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-12 21:11:19,480 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-12 21:11:19,718 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-12 21:11:19,918 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-12 21:11:20,081 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 21:11:20,249 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 21:11:20,431 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 21:11:20,645 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:11:21,237 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:11:21,420 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:11:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:21,582 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-12 21:11:21,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-12 21:11:21,583 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-12 21:11:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:21,585 INFO L225 Difference]: With dead ends: 269 [2018-10-12 21:11:21,585 INFO L226 Difference]: Without dead ends: 269 [2018-10-12 21:11:21,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 21:11:21,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-12 21:11:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-12 21:11:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-12 21:11:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-12 21:11:21,596 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-12 21:11:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:21,597 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-12 21:11:21,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 21:11:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-12 21:11:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-12 21:11:21,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:21,601 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] [2018-10-12 21:11:21,601 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:21,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-12 21:11:21,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:22,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:22,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 21:11:22,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 21:11:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 21:11:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-12 21:11:22,957 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-12 21:11:26,403 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-12 21:11:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:27,490 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-12 21:11:27,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-12 21:11:27,498 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-12 21:11:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:27,500 INFO L225 Difference]: With dead ends: 292 [2018-10-12 21:11:27,500 INFO L226 Difference]: Without dead ends: 292 [2018-10-12 21:11:27,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-12 21:11:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-12 21:11:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-12 21:11:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-12 21:11:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-12 21:11:27,515 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-12 21:11:27,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:27,516 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-12 21:11:27,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 21:11:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-12 21:11:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-12 21:11:27,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:27,519 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] [2018-10-12 21:11:27,521 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:27,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-12 21:11:27,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:29,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:29,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 21:11:29,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 21:11:29,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 21:11:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-12 21:11:29,022 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-12 21:11:31,616 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-12 21:11:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:34,124 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-12 21:11:34,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 21:11:34,131 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-12 21:11:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:34,133 INFO L225 Difference]: With dead ends: 315 [2018-10-12 21:11:34,133 INFO L226 Difference]: Without dead ends: 315 [2018-10-12 21:11:34,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 21:11:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-12 21:11:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-12 21:11:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-12 21:11:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-12 21:11:34,141 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-12 21:11:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:34,141 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-12 21:11:34,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 21:11:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-12 21:11:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-12 21:11:34,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:34,145 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] [2018-10-12 21:11:34,145 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:34,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-12 21:11:34,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:36,184 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-10-12 21:11:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:37,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:37,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:11:37,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:11:37,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:11:37,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:11:37,104 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-12 21:11:39,573 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-12 21:11:40,875 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-12 21:11:41,624 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-12 21:11:41,791 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:11:45,223 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:11:45,406 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:11:45,624 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:11:45,903 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:11:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:46,219 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-12 21:11:46,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-12 21:11:46,220 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-12 21:11:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:46,222 INFO L225 Difference]: With dead ends: 338 [2018-10-12 21:11:46,222 INFO L226 Difference]: Without dead ends: 338 [2018-10-12 21:11:46,224 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 [2018-10-12 21:11:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-12 21:11:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-12 21:11:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-12 21:11:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-12 21:11:46,230 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-12 21:11:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:46,231 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-12 21:11:46,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:11:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-12 21:11:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-12 21:11:46,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:46,233 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] [2018-10-12 21:11:46,234 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:46,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:46,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-12 21:11:46,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:48,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:48,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:11:48,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:11:48,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:11:48,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:11:48,701 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-12 21:11:50,399 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:11:50,659 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:11:50,829 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:11:51,008 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:11:51,173 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:11:51,671 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:11:52,029 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:11:52,233 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:11:52,401 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 21:11:52,908 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-12 21:11:53,145 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:11:53,444 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:11:53,671 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:11:53,891 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-12 21:11:54,054 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:11:54,564 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:11:54,840 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-12 21:11:55,157 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-12 21:11:55,379 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-12 21:11:55,536 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-12 21:11:56,219 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-12 21:11:56,718 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:11:56,878 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:11:57,405 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-12 21:11:57,593 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-12 21:11:57,816 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-12 21:11:58,082 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-12 21:11:58,299 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-12 21:11:58,476 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:11:58,798 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-12 21:11:59,071 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 21:11:59,282 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-12 21:11:59,541 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 21:11:59,692 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:12:00,036 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:12:00,231 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:12:00,423 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:12:00,658 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-12 21:12:01,189 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:12:01,401 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:12:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:01,569 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-12 21:12:01,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-12 21:12:01,569 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-12 21:12:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:01,571 INFO L225 Difference]: With dead ends: 361 [2018-10-12 21:12:01,571 INFO L226 Difference]: Without dead ends: 361 [2018-10-12 21:12:01,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-12 21:12:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-12 21:12:01,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-12 21:12:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-12 21:12:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-12 21:12:01,580 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-12 21:12:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:01,581 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-12 21:12:01,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-12 21:12:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-12 21:12:01,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:01,583 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] [2018-10-12 21:12:01,583 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:01,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-12 21:12:01,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:05,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:05,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:12:05,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:12:05,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:12:05,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:12:05,324 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-12 21:12:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:13,835 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-12 21:12:13,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-12 21:12:13,835 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-12 21:12:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:13,837 INFO L225 Difference]: With dead ends: 384 [2018-10-12 21:12:13,837 INFO L226 Difference]: Without dead ends: 384 [2018-10-12 21:12:13,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2018-10-12 21:12:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-12 21:12:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-12 21:12:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-12 21:12:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-12 21:12:13,846 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-12 21:12:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:13,847 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-12 21:12:13,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-12 21:12:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-12 21:12:13,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:13,849 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] [2018-10-12 21:12:13,850 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:13,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-12 21:12:13,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:16,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:16,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-12 21:12:16,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-12 21:12:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-12 21:12:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-12 21:12:16,846 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-12 21:12:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:25,772 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-12 21:12:25,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-12 21:12:25,773 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-12 21:12:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:25,775 INFO L225 Difference]: With dead ends: 407 [2018-10-12 21:12:25,776 INFO L226 Difference]: Without dead ends: 407 [2018-10-12 21:12:25,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1092, Invalid=6564, Unknown=0, NotChecked=0, Total=7656 [2018-10-12 21:12:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-12 21:12:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-12 21:12:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-12 21:12:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-12 21:12:25,784 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-12 21:12:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:25,785 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-12 21:12:25,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-12 21:12:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-12 21:12:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-12 21:12:25,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:25,788 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] [2018-10-12 21:12:25,788 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:25,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:25,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-12 21:12:25,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:28,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:28,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:12:28,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:12:28,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:12:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:12:28,355 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-12 21:12:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:37,467 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-12 21:12:37,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-12 21:12:37,468 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-12 21:12:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:37,471 INFO L225 Difference]: With dead ends: 430 [2018-10-12 21:12:37,471 INFO L226 Difference]: Without dead ends: 430 [2018-10-12 21:12:37,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 21:12:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-12 21:12:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-12 21:12:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-12 21:12:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-12 21:12:37,479 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-12 21:12:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:37,480 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-12 21:12:37,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-12 21:12:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-12 21:12:37,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:37,483 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] [2018-10-12 21:12:37,483 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:37,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-12 21:12:37,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:40,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:40,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 21:12:40,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 21:12:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 21:12:40,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:12:40,335 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-12 21:12:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:51,465 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-12 21:12:51,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-12 21:12:51,466 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-12 21:12:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:51,468 INFO L225 Difference]: With dead ends: 453 [2018-10-12 21:12:51,468 INFO L226 Difference]: Without dead ends: 453 [2018-10-12 21:12:51,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-12 21:12:51,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-12 21:12:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-12 21:12:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-12 21:12:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-12 21:12:51,476 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-12 21:12:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:51,477 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-12 21:12:51,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 21:12:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-12 21:12:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-12 21:12:51,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:51,480 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] [2018-10-12 21:12:51,480 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:51,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:51,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-12 21:12:51,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:55,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:55,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-12 21:12:55,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-12 21:12:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-12 21:12:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-12 21:12:55,453 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-12 21:12:57,243 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-12 21:12:57,502 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:12:57,865 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:12:58,065 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:12:58,281 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-12 21:12:58,469 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-12 21:12:59,122 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-12 21:12:59,657 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-12 21:13:01,510 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-12 21:13:06,488 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2018-10-12 21:13:09,885 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-12 21:13:10,153 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-12 21:13:10,497 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-12 21:13:10,722 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-12 21:13:11,543 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:13:11,844 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:13:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:12,086 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-12 21:13:12,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-12 21:13:12,087 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-12 21:13:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:12,088 INFO L225 Difference]: With dead ends: 476 [2018-10-12 21:13:12,089 INFO L226 Difference]: Without dead ends: 476 [2018-10-12 21:13:12,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-12 21:13:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-12 21:13:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-12 21:13:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-12 21:13:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-12 21:13:12,096 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-12 21:13:12,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:12,097 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-12 21:13:12,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-12 21:13:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-12 21:13:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-12 21:13:12,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:12,100 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] [2018-10-12 21:13:12,100 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:12,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-12 21:13:12,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:16,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:16,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-12 21:13:16,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-12 21:13:16,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-12 21:13:16,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-12 21:13:16,697 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-12 21:13:19,401 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-12 21:13:20,181 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-12 21:13:20,414 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-12 21:13:20,703 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-12 21:13:21,080 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-12 21:13:21,332 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-12 21:13:21,594 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-12 21:13:21,821 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:13:22,534 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-12 21:13:22,839 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-12 21:13:23,221 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:13:23,502 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-12 21:13:23,764 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-12 21:13:23,956 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-12 21:13:24,619 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-12 21:13:25,036 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-12 21:13:25,416 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-12 21:13:25,692 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:13:25,987 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-12 21:13:26,189 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-12 21:13:26,585 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2018-10-12 21:13:26,880 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-12 21:13:27,472 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-12 21:13:27,675 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-12 21:13:28,399 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:28,598 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:29,314 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:29,520 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:29,709 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-12 21:13:30,287 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:30,485 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:31,194 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:31,386 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-12 21:13:32,128 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:13:32,393 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-12 21:13:33,088 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:13:33,284 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-12 21:13:33,959 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:13:34,157 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-12 21:13:34,852 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-12 21:13:35,075 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-12 21:13:35,354 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-12 21:13:35,724 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-12 21:13:35,995 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-12 21:13:36,223 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:13:36,621 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-12 21:13:36,984 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-12 21:13:37,332 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-12 21:13:37,656 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-12 21:13:37,828 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:13:38,150 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 21:13:38,361 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-12 21:13:38,591 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-12 21:13:38,842 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-12 21:13:39,373 WARN L178 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-12 21:13:39,899 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:13:40,098 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-12 21:13:40,319 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:13:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:40,512 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-12 21:13:40,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-12 21:13:40,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-12 21:13:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:40,515 INFO L225 Difference]: With dead ends: 499 [2018-10-12 21:13:40,515 INFO L226 Difference]: Without dead ends: 499 [2018-10-12 21:13:40,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-12 21:13:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-12 21:13:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-12 21:13:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-12 21:13:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-12 21:13:40,522 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-12 21:13:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:40,523 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-12 21:13:40,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-12 21:13:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-12 21:13:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-12 21:13:40,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:40,526 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] [2018-10-12 21:13:40,527 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:40,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-12 21:13:40,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:45,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:45,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:13:45,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:13:45,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:13:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:13:45,497 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-12 21:13:53,187 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:13:54,416 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 21:14:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:14:01,135 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-12 21:14:01,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-12 21:14:01,135 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-12 21:14:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:14:01,138 INFO L225 Difference]: With dead ends: 522 [2018-10-12 21:14:01,138 INFO L226 Difference]: Without dead ends: 522 [2018-10-12 21:14:01,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-12 21:14:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-12 21:14:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-12 21:14:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-12 21:14:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-12 21:14:01,146 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-12 21:14:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:14:01,146 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-12 21:14:01,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:14:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-12 21:14:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-12 21:14:01,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:14:01,150 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] [2018-10-12 21:14:01,150 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:14:01,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:14:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-12 21:14:01,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:14:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:05,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:05,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:14:05,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:14:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:14:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:14:05,545 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-12 21:14:07,521 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:14:07,941 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:14:08,180 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:14:08,386 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:14:08,591 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:14:09,224 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:14:09,722 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:14:09,966 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:14:10,154 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 21:14:10,813 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-12 21:14:11,095 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:14:11,465 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:11,713 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:14:11,961 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:12,150 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:14:12,798 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-12 21:14:13,152 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:13,571 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:14:13,843 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:14:14,102 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-12 21:14:14,298 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-12 21:14:14,955 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-12 21:14:15,246 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:14:15,638 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:14:15,916 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-12 21:14:16,203 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-12 21:14:16,418 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:14:16,836 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:14:17,119 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:14:17,424 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:17,829 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-12 21:14:18,139 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-12 21:14:18,423 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:14:19,158 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-12 21:14:19,370 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-12 21:14:20,079 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-12 21:14:20,292 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:14:21,011 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:14:21,230 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:14:21,953 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:22,172 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:22,880 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-12 21:14:23,099 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:23,300 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2018-10-12 21:14:23,924 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:24,138 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:14:24,517 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-12 21:14:24,880 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:25,126 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-12 21:14:25,419 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-12 21:14:25,803 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-12 21:14:26,076 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-12 21:14:26,302 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-12 21:14:26,721 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-12 21:14:27,096 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-12 21:14:27,353 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-12 21:14:27,684 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-12 21:14:27,901 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:14:28,237 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-12 21:14:28,504 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-12 21:14:28,732 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-12 21:14:28,997 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-12 21:14:29,184 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:14:29,508 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-12 21:14:29,715 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 21:14:29,929 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-12 21:14:30,184 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 21:14:30,359 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:14:30,686 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:14:30,904 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:14:31,134 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:14:31,393 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-12 21:14:31,807 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:14:32,025 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:14:32,246 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:14:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:14:32,454 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-12 21:14:32,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-12 21:14:32,461 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-12 21:14:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:14:32,463 INFO L225 Difference]: With dead ends: 545 [2018-10-12 21:14:32,463 INFO L226 Difference]: Without dead ends: 545 [2018-10-12 21:14:32,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=3448, Invalid=22634, Unknown=0, NotChecked=0, Total=26082 [2018-10-12 21:14:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-12 21:14:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-12 21:14:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-12 21:14:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-12 21:14:32,470 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-12 21:14:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:14:32,471 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-12 21:14:32,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:14:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-12 21:14:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-12 21:14:32,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:14:32,475 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] [2018-10-12 21:14:32,475 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:14:32,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:14:32,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-12 21:14:32,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:14:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:33,691 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-12 21:14:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:38,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:38,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-12 21:14:38,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-12 21:14:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-12 21:14:38,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 21:14:38,648 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-12 21:14:41,758 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:42,542 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:42,953 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:14:43,172 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-12 21:14:43,358 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-12 21:14:43,855 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-12 21:14:44,286 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:44,558 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:14:44,944 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:45,195 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:14:45,445 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:45,638 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:14:46,316 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-12 21:14:46,609 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:46,994 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:14:47,262 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:14:47,538 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-12 21:14:47,736 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-12 21:14:48,436 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-12 21:14:48,733 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:14:49,207 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:14:49,502 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-12 21:14:49,806 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-12 21:14:50,023 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-12 21:14:50,458 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-12 21:14:50,745 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-12 21:14:51,062 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-12 21:14:51,482 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-12 21:14:51,788 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-12 21:14:52,060 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-12 21:14:52,258 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-12 21:14:52,668 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-12 21:14:52,927 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-12 21:14:53,464 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-12 21:14:53,732 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:14:53,940 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-12 21:14:54,669 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-12 21:14:55,203 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-12 21:14:55,422 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:14:56,170 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:14:56,395 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:14:57,152 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:57,370 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:58,106 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-12 21:14:58,318 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:59,089 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:59,368 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:15:00,127 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:15:00,347 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:15:00,750 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-12 21:15:01,118 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-12 21:15:01,366 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-12 21:15:01,660 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-12 21:15:02,052 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-12 21:15:02,330 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-12 21:15:02,563 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-12 21:15:02,984 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-12 21:15:03,371 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-12 21:15:03,636 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-12 21:15:03,973 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-12 21:15:04,199 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-12 21:15:04,432 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-12 21:15:04,622 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-12 21:15:04,833 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-12 21:15:05,060 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-12 21:15:05,333 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-12 21:15:05,525 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-12 21:15:05,853 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-12 21:15:06,064 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-12 21:15:06,287 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-12 21:15:06,537 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-12 21:15:06,717 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-12 21:15:07,039 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 21:15:07,241 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:15:07,457 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-12 21:15:07,696 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:15:08,299 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:08,511 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:08,717 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-12 21:15:08,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-12 21:15:08,717 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-12 21:15:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:08,720 INFO L225 Difference]: With dead ends: 568 [2018-10-12 21:15:08,720 INFO L226 Difference]: Without dead ends: 568 [2018-10-12 21:15:08,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=3776, Invalid=26674, Unknown=0, NotChecked=0, Total=30450 [2018-10-12 21:15:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-12 21:15:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-12 21:15:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-12 21:15:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-12 21:15:08,728 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-12 21:15:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:08,728 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-12 21:15:08,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-12 21:15:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-12 21:15:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-12 21:15:08,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:08,732 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] [2018-10-12 21:15:08,732 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:08,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-12 21:15:08,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:15:14,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:15:14,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-12 21:15:14,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-12 21:15:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-12 21:15:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-12 21:15:14,803 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-12 21:15:16,971 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-12 21:15:23,906 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 21:15:24,167 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:24,519 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:24,808 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:15:25,636 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:25,864 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:26,333 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 21:15:26,786 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-10-12 21:15:27,123 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:27,349 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:27,822 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 21:15:28,762 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:15:29,038 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-12 21:15:29,387 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-12 21:15:29,648 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-12 21:15:30,008 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-12 21:15:30,236 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-12 21:15:30,642 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-12 21:15:30,940 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-12 21:15:31,501 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-12 21:15:31,752 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-12 21:15:32,175 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-12 21:15:32,539 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-12 21:15:32,817 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-12 21:15:33,355 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-12 21:15:33,615 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-12 21:15:33,799 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:15:34,048 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-12 21:15:34,411 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-12 21:15:34,681 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-12 21:15:35,289 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-12 21:15:35,524 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-12 21:15:35,866 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-12 21:15:36,093 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-12 21:15:36,339 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-12 21:15:36,627 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-12 21:15:36,833 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-12 21:15:37,174 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-12 21:15:37,391 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 21:15:37,631 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-12 21:15:37,906 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-12 21:15:38,106 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-12 21:15:38,440 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-12 21:15:38,669 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-12 21:15:38,907 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-12 21:15:39,167 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-12 21:15:39,355 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-12 21:15:39,895 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:15:40,214 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:15:40,468 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-12 21:15:40,882 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:15:41,086 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-12 21:15:41,305 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-12 21:15:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:41,535 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-12 21:15:41,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-12 21:15:41,536 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-12 21:15:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:41,538 INFO L225 Difference]: With dead ends: 591 [2018-10-12 21:15:41,538 INFO L226 Difference]: Without dead ends: 591 [2018-10-12 21:15:41,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-12 21:15:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-12 21:15:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-12 21:15:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-12 21:15:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-12 21:15:41,546 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-12 21:15:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:41,546 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-12 21:15:41,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-12 21:15:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-12 21:15:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-12 21:15:41,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:41,551 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] [2018-10-12 21:15:41,551 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:41,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:41,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-12 21:15:41,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:15:43,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:15:43,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 21:15:43,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 21:15:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 21:15:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:15:43,163 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-12 21:15:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:44,148 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-12 21:15:44,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-12 21:15:44,148 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-12 21:15:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:44,149 INFO L225 Difference]: With dead ends: 555 [2018-10-12 21:15:44,149 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:15:44,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-12 21:15:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:15:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:15:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:15:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:15:44,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-12 21:15:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:44,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:15:44,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 21:15:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:15:44,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:15:44,157 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 12.10 09:15:44 BoogieIcfgContainer [2018-10-12 21:15:44,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:15:44,158 INFO L168 Benchmark]: Toolchain (without parser) took 297543.14 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 134.1 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. [2018-10-12 21:15:44,159 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-10-12 21:15:44,159 INFO L168 Benchmark]: Boogie Preprocessor took 93.68 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. [2018-10-12 21:15:44,159 INFO L168 Benchmark]: RCFGBuilder took 822.02 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. [2018-10-12 21:15:44,160 INFO L168 Benchmark]: TraceAbstraction took 296622.97 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.9 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. [2018-10-12 21:15:44,161 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 0.19 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 93.68 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 822.02 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 296622.97 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.9 MB). Peak memory consumption was 95.0 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, 296.5s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 233.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 179.1s 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, 50.6s 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-0-2018-10-12_21-15-44-168.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-0-2018-10-12_21-15-44-168.csv Received shutdown request...