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_true-valid-memsafety.i_35.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:50:58,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:50:58,345 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:50:58,357 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:50:58,357 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:50:58,358 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:50:58,360 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:50:58,362 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:50:58,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:50:58,364 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:50:58,365 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:50:58,391 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:50:58,401 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:50:58,401 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:50:58,402 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:50:58,402 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:50:58,403 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:50:58,403 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:50:58,404 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:50:58,404 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:50:58,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:50:58,404 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:50:58,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:50:58,405 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:50:58,405 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:50:58,406 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:50:58,406 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:50:58,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:50:58,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:50:58,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:50:58,466 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:50:58,466 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:50:58,467 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-14 16:50:58,468 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl' [2018-10-14 16:50:58,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:50:58,544 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:50:58,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:50:58,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:50:58,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:50:58,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... [2018-10-14 16:50:58,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:50:58,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:50:58,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:50:58,637 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:50:58,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:50:58,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:50:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:50:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:50:59,527 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:50:59,528 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:59 BoogieIcfgContainer [2018-10-14 16:50:59,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:50:59,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:50:59,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:50:59,539 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:50:59,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:50:58" (1/2) ... [2018-10-14 16:50:59,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1518c2 and model type optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:50:59, skipping insertion in model container [2018-10-14 16:50:59,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:50:59" (2/2) ... [2018-10-14 16:50:59,543 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-14 16:50:59,554 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:50:59,565 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:50:59,580 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:50:59,606 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:50:59,606 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:50:59,607 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:50:59,607 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:50:59,607 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:50:59,607 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:50:59,607 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:50:59,608 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:50:59,608 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:50:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-14 16:50:59,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-14 16:50:59,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:50:59,643 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:50:59,645 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:50:59,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:50:59,651 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-14 16:50:59,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:50:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:00,806 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-14 16:51:01,065 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-14 16:51:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:01,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:51:01,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-14 16:51:01,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-14 16:51:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-14 16:51:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-14 16:51:01,635 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-14 16:51:03,468 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-14 16:51:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:03,675 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-14 16:51:03,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-14 16:51:03,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-14 16:51:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:03,694 INFO L225 Difference]: With dead ends: 154 [2018-10-14 16:51:03,695 INFO L226 Difference]: Without dead ends: 154 [2018-10-14 16:51:03,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:51:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-14 16:51:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-14 16:51:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-14 16:51:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-14 16:51:03,745 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-14 16:51:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:03,746 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-14 16:51:03,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-14 16:51:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-14 16:51:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-14 16:51:03,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:03,752 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:03,752 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:03,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-14 16:51:03,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:04,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:04,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-14 16:51:04,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-14 16:51:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-14 16:51:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:51:04,498 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-14 16:51:05,294 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-14 16:51:05,712 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-14 16:51:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:06,782 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-14 16:51:06,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-14 16:51:06,784 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-14 16:51:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:06,790 INFO L225 Difference]: With dead ends: 177 [2018-10-14 16:51:06,790 INFO L226 Difference]: Without dead ends: 177 [2018-10-14 16:51:06,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-14 16:51:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-14 16:51:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-14 16:51:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-14 16:51:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-14 16:51:06,817 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-14 16:51:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:06,818 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-14 16:51:06,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-14 16:51:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-14 16:51:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-14 16:51:06,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:06,825 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:06,826 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:06,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:06,826 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-14 16:51:06,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:07,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:07,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-14 16:51:07,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-14 16:51:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-14 16:51:07,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:51:07,869 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-14 16:51:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:10,045 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-14 16:51:10,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-14 16:51:10,046 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-14 16:51:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:10,048 INFO L225 Difference]: With dead ends: 200 [2018-10-14 16:51:10,049 INFO L226 Difference]: Without dead ends: 200 [2018-10-14 16:51:10,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:51:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-14 16:51:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-14 16:51:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-14 16:51:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-14 16:51:10,070 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-14 16:51:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:10,076 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-14 16:51:10,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-14 16:51:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-14 16:51:10,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-14 16:51:10,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:10,084 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:10,085 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:10,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-14 16:51:10,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:12,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:12,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-14 16:51:12,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-14 16:51:12,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-14 16:51:12,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-14 16:51:12,218 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-14 16:51:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:14,877 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-14 16:51:14,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-14 16:51:14,883 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-14 16:51:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:14,885 INFO L225 Difference]: With dead ends: 223 [2018-10-14 16:51:14,885 INFO L226 Difference]: Without dead ends: 223 [2018-10-14 16:51:14,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-14 16:51:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-14 16:51:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-14 16:51:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-14 16:51:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-14 16:51:14,912 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-14 16:51:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:14,912 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-14 16:51:14,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-14 16:51:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-14 16:51:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-14 16:51:14,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:14,918 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:14,919 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:14,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-14 16:51:14,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:16,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:16,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:51:16,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:51:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:51:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:51:16,912 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-14 16:51:17,806 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-14 16:51:17,950 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:51:19,713 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-14 16:51:21,199 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:51:21,405 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:51:21,636 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:51:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:21,860 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-14 16:51:21,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:51:21,862 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-14 16:51:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:21,864 INFO L225 Difference]: With dead ends: 246 [2018-10-14 16:51:21,864 INFO L226 Difference]: Without dead ends: 246 [2018-10-14 16:51:21,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:51:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-14 16:51:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-14 16:51:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-14 16:51:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-14 16:51:21,881 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-14 16:51:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:21,881 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-14 16:51:21,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:51:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-14 16:51:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-14 16:51:21,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:21,899 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:21,899 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:21,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-14 16:51:21,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:23,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:23,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-14 16:51:23,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-14 16:51:23,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-14 16:51:23,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-14 16:51:23,466 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-14 16:51:24,609 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-14 16:51:24,793 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:51:25,011 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:51:25,165 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:51:25,389 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:51:25,591 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:51:26,166 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:51:26,462 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:51:26,692 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-14 16:51:26,903 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-14 16:51:27,131 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:51:27,340 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-14 16:51:28,022 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-14 16:51:28,275 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-14 16:51:28,736 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-14 16:51:28,961 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-14 16:51:29,144 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-14 16:51:29,431 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-14 16:51:29,672 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-14 16:51:29,917 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-14 16:51:30,117 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-14 16:51:30,336 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-14 16:51:30,545 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-14 16:51:30,747 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-14 16:51:30,947 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-14 16:51:31,127 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-14 16:51:31,337 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:51:31,923 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:51:32,099 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:51:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:32,257 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-14 16:51:32,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-14 16:51:32,264 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-14 16:51:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:32,266 INFO L225 Difference]: With dead ends: 269 [2018-10-14 16:51:32,266 INFO L226 Difference]: Without dead ends: 269 [2018-10-14 16:51:32,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:51:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-14 16:51:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-14 16:51:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-14 16:51:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-14 16:51:32,276 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-14 16:51:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:32,277 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-14 16:51:32,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-14 16:51:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-14 16:51:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-14 16:51:32,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:32,280 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:32,280 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:32,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:32,280 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-14 16:51:32,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:33,220 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-14 16:51:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:34,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:34,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-14 16:51:34,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-14 16:51:34,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-14 16:51:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-14 16:51:34,790 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-14 16:51:38,141 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-14 16:51:39,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:39,192 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-14 16:51:39,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-14 16:51:39,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-14 16:51:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:39,194 INFO L225 Difference]: With dead ends: 292 [2018-10-14 16:51:39,194 INFO L226 Difference]: Without dead ends: 292 [2018-10-14 16:51:39,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-14 16:51:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-14 16:51:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-14 16:51:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-14 16:51:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-14 16:51:39,201 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-14 16:51:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:39,202 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-14 16:51:39,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-14 16:51:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-14 16:51:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-14 16:51:39,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:39,205 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:39,206 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:39,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:39,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-14 16:51:39,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:40,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:40,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:51:40,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:51:40,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:51:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:51:40,829 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-14 16:51:43,352 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-14 16:51:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:45,881 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-14 16:51:45,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:51:45,888 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-14 16:51:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:45,890 INFO L225 Difference]: With dead ends: 315 [2018-10-14 16:51:45,890 INFO L226 Difference]: Without dead ends: 315 [2018-10-14 16:51:45,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:51:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-14 16:51:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-14 16:51:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-14 16:51:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-14 16:51:45,898 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-14 16:51:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:45,898 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-14 16:51:45,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:51:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-14 16:51:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-14 16:51:45,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:45,900 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:45,901 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:45,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-14 16:51:45,902 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:48,073 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-10-14 16:51:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:48,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:51:48,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:51:48,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:51:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:51:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:51:48,934 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-14 16:51:51,123 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:51:52,697 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-14 16:51:53,437 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-14 16:51:53,602 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:51:57,025 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:51:57,199 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:51:57,416 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:51:57,689 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:51:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:58,004 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-14 16:51:58,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-14 16:51:58,004 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-14 16:51:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:58,006 INFO L225 Difference]: With dead ends: 338 [2018-10-14 16:51:58,006 INFO L226 Difference]: Without dead ends: 338 [2018-10-14 16:51:58,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1182, Invalid=7008, Unknown=0, NotChecked=0, Total=8190 [2018-10-14 16:51:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-14 16:51:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-14 16:51:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-14 16:51:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-14 16:51:58,015 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-14 16:51:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:58,016 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-14 16:51:58,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:51:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-14 16:51:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-14 16:51:58,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:58,018 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:51:58,019 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:58,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:58,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-14 16:51:58,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:00,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:00,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:52:00,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:52:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:52:00,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:52:00,167 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-14 16:52:01,640 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-14 16:52:01,851 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:52:02,119 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:52:02,285 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:52:02,467 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:52:02,631 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:52:03,126 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:52:03,494 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:52:03,702 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:52:03,864 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:52:04,364 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-14 16:52:04,605 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:52:04,881 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:52:05,101 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:52:05,317 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-14 16:52:05,482 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:52:06,007 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:52:06,244 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-14 16:52:06,559 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-14 16:52:06,797 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-14 16:52:06,954 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:52:07,631 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-14 16:52:08,121 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:52:08,285 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:52:08,813 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-14 16:52:09,001 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-14 16:52:09,228 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-14 16:52:09,495 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-14 16:52:09,705 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-14 16:52:09,885 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:52:10,214 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-14 16:52:10,494 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:52:10,708 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:52:10,966 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-14 16:52:11,118 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:52:11,391 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:52:11,601 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:52:11,833 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:52:12,081 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-14 16:52:12,429 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:52:12,608 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:52:12,791 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:52:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:12,960 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-14 16:52:12,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-14 16:52:12,961 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-14 16:52:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:12,963 INFO L225 Difference]: With dead ends: 361 [2018-10-14 16:52:12,963 INFO L226 Difference]: Without dead ends: 361 [2018-10-14 16:52:12,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-14 16:52:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-14 16:52:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-14 16:52:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-14 16:52:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-14 16:52:12,972 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-14 16:52:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:12,973 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-14 16:52:12,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-14 16:52:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-14 16:52:12,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:12,975 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:12,976 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:12,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-14 16:52:12,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:15,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:15,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:52:15,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:52:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:52:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:52:15,822 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-14 16:52:20,352 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-14 16:52:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:24,483 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-14 16:52:24,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:52:24,484 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-14 16:52:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:24,486 INFO L225 Difference]: With dead ends: 384 [2018-10-14 16:52:24,487 INFO L226 Difference]: Without dead ends: 384 [2018-10-14 16:52:24,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1173, Invalid=7199, Unknown=0, NotChecked=0, Total=8372 [2018-10-14 16:52:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-14 16:52:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-14 16:52:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-14 16:52:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-14 16:52:24,495 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-14 16:52:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:24,496 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-14 16:52:24,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-14 16:52:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-14 16:52:24,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:24,499 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:24,499 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:24,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:24,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-14 16:52:24,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:27,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:27,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-14 16:52:27,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-14 16:52:27,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-14 16:52:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-14 16:52:27,378 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-14 16:52:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:35,916 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-14 16:52:35,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-14 16:52:35,916 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-14 16:52:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:35,919 INFO L225 Difference]: With dead ends: 407 [2018-10-14 16:52:35,919 INFO L226 Difference]: Without dead ends: 407 [2018-10-14 16:52:35,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1092, Invalid=6564, Unknown=0, NotChecked=0, Total=7656 [2018-10-14 16:52:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-14 16:52:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-14 16:52:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-14 16:52:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-14 16:52:35,926 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-14 16:52:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:35,927 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-14 16:52:35,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-14 16:52:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-14 16:52:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-14 16:52:35,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:35,930 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:35,930 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:35,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-14 16:52:35,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:38,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:38,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:52:38,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:52:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:52:38,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:52:38,562 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-14 16:52:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:47,984 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-14 16:52:47,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:52:47,984 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-14 16:52:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:47,987 INFO L225 Difference]: With dead ends: 430 [2018-10-14 16:52:47,987 INFO L226 Difference]: Without dead ends: 430 [2018-10-14 16:52:47,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:52:47,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-14 16:52:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-14 16:52:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-14 16:52:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-14 16:52:47,996 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-14 16:52:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:47,997 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-14 16:52:47,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:52:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-14 16:52:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-14 16:52:48,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:48,000 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:48,000 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:48,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-14 16:52:48,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:50,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:50,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:52:50,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:52:50,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:52:50,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:52:50,892 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-14 16:53:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:01,585 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-14 16:53:01,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-14 16:53:01,586 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-14 16:53:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:01,588 INFO L225 Difference]: With dead ends: 453 [2018-10-14 16:53:01,588 INFO L226 Difference]: Without dead ends: 453 [2018-10-14 16:53:01,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-14 16:53:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-14 16:53:01,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-14 16:53:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-14 16:53:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-14 16:53:01,596 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-14 16:53:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:01,597 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-14 16:53:01,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:53:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-14 16:53:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-14 16:53:01,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:01,601 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:53:01,601 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:01,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-14 16:53:01,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:05,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:05,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-14 16:53:05,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-14 16:53:05,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-14 16:53:05,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-14 16:53:05,605 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-14 16:53:07,466 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:53:07,839 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:53:08,070 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:53:08,279 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-14 16:53:08,459 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-14 16:53:09,085 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-14 16:53:09,573 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-14 16:53:12,928 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-14 16:53:19,274 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-14 16:53:19,481 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-14 16:53:19,743 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-14 16:53:20,085 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-14 16:53:20,307 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-14 16:53:20,768 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-14 16:53:21,111 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:53:21,339 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:53:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:21,583 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-14 16:53:21,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-14 16:53:21,584 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-14 16:53:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:21,586 INFO L225 Difference]: With dead ends: 476 [2018-10-14 16:53:21,586 INFO L226 Difference]: Without dead ends: 476 [2018-10-14 16:53:21,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-14 16:53:21,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-14 16:53:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-14 16:53:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-14 16:53:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-14 16:53:21,594 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-14 16:53:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:21,595 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-14 16:53:21,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-14 16:53:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-14 16:53:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-14 16:53:21,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:21,598 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:53:21,598 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:21,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-14 16:53:21,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:26,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:26,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-14 16:53:26,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-14 16:53:26,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-14 16:53:26,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:53:26,282 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-14 16:53:28,461 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-10-14 16:53:28,682 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-14 16:53:29,620 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-14 16:53:29,846 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-14 16:53:30,127 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-14 16:53:30,489 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-14 16:53:30,734 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-14 16:53:30,976 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-14 16:53:31,170 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:53:31,565 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-10-14 16:53:31,825 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-14 16:53:32,117 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-14 16:53:32,482 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:53:32,735 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-14 16:53:32,994 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-14 16:53:33,220 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-14 16:53:33,667 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-14 16:53:33,946 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-14 16:53:34,360 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-14 16:53:34,737 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-14 16:53:34,997 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:53:35,248 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-14 16:53:35,435 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-14 16:53:36,080 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-14 16:53:36,586 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-14 16:53:36,776 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-14 16:53:37,442 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:37,648 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:38,326 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:38,535 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:38,790 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-14 16:53:39,349 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:39,538 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-14 16:53:40,223 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-14 16:53:40,406 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:53:41,066 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:53:41,255 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-14 16:53:41,912 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-14 16:53:42,097 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-14 16:53:42,759 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-14 16:53:42,973 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-14 16:53:43,683 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-14 16:53:43,978 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-14 16:53:44,264 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-14 16:53:44,630 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-14 16:53:44,891 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-14 16:53:45,105 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:53:45,502 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-14 16:53:45,853 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-14 16:53:46,106 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-14 16:53:46,415 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-14 16:53:46,582 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:53:46,889 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:53:47,094 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:53:47,317 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-14 16:53:47,561 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-14 16:53:48,101 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-14 16:53:48,612 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:53:48,834 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-14 16:53:49,089 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:53:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:49,286 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-14 16:53:49,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-14 16:53:49,287 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-14 16:53:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:49,289 INFO L225 Difference]: With dead ends: 499 [2018-10-14 16:53:49,289 INFO L226 Difference]: Without dead ends: 499 [2018-10-14 16:53:49,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-14 16:53:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-14 16:53:49,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-14 16:53:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-14 16:53:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-14 16:53:49,298 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-14 16:53:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:49,298 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-14 16:53:49,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-14 16:53:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-14 16:53:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-14 16:53:49,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:53:49,302 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:53:49,302 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:53:49,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:53:49,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-14 16:53:49,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:53:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:54,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:54,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:53:54,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:53:54,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:53:54,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:53:54,596 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-14 16:54:01,182 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-14 16:54:01,950 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:54:02,154 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-14 16:54:03,397 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-14 16:54:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:10,224 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-14 16:54:10,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-14 16:54:10,224 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-14 16:54:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:10,227 INFO L225 Difference]: With dead ends: 522 [2018-10-14 16:54:10,227 INFO L226 Difference]: Without dead ends: 522 [2018-10-14 16:54:10,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:54:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-14 16:54:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-14 16:54:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-14 16:54:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-14 16:54:10,236 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-14 16:54:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:10,236 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-14 16:54:10,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:54:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-14 16:54:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-14 16:54:10,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:10,240 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:54:10,240 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:10,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-14 16:54:10,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:14,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:14,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:54:14,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:54:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:54:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:54:14,584 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-14 16:54:16,639 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:54:16,998 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-14 16:54:17,185 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:54:17,396 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-14 16:54:17,585 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:54:18,229 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:54:18,725 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-14 16:54:18,960 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:54:19,148 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:54:19,544 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-10-14 16:54:19,855 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-14 16:54:20,140 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:54:20,509 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:20,749 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:54:21,016 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:21,212 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:54:21,854 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-14 16:54:22,154 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:22,553 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:54:22,817 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:54:23,085 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-14 16:54:23,283 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-14 16:54:23,672 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-14 16:54:23,935 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-14 16:54:24,225 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:24,619 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:24,932 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-14 16:54:25,208 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-14 16:54:25,406 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:25,819 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-14 16:54:26,091 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:26,385 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:26,783 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-14 16:54:27,068 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-14 16:54:27,284 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:54:28,000 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-14 16:54:28,212 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-14 16:54:28,924 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-14 16:54:29,139 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:54:29,901 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:54:30,151 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:54:30,894 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:54:31,108 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:54:31,824 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-14 16:54:32,032 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:54:32,747 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:54:32,962 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:54:33,341 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-14 16:54:33,688 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:33,921 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-14 16:54:34,216 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-14 16:54:34,599 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-14 16:54:34,896 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-14 16:54:35,192 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-14 16:54:35,603 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-14 16:54:35,977 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-14 16:54:36,234 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-14 16:54:36,573 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-14 16:54:36,768 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-14 16:54:37,108 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-14 16:54:37,324 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-14 16:54:37,547 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-14 16:54:37,808 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-14 16:54:37,997 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-14 16:54:38,324 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-14 16:54:38,533 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:54:38,757 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-14 16:54:39,014 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-14 16:54:39,209 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-14 16:54:39,525 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:54:39,737 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:54:39,977 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:54:40,313 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-14 16:54:40,924 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-14 16:54:41,145 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:54:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:54:41,353 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-14 16:54:41,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-14 16:54:41,353 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-14 16:54:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:54:41,355 INFO L225 Difference]: With dead ends: 545 [2018-10-14 16:54:41,355 INFO L226 Difference]: Without dead ends: 545 [2018-10-14 16:54:41,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=3448, Invalid=22634, Unknown=0, NotChecked=0, Total=26082 [2018-10-14 16:54:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-14 16:54:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-14 16:54:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-14 16:54:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-14 16:54:41,363 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-14 16:54:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:54:41,364 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-14 16:54:41,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:54:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-14 16:54:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-14 16:54:41,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:54:41,368 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:54:41,368 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:54:41,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:54:41,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-14 16:54:41,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:54:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:54:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:54:47,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:54:47,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:54:47,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:54:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:54:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:54:47,556 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-14 16:54:50,445 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-14 16:54:51,866 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-14 16:54:52,085 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-14 16:54:52,855 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-14 16:54:53,068 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:53,351 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-14 16:54:53,744 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-14 16:54:54,007 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-14 16:54:54,270 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:54:54,468 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-14 16:54:55,161 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-14 16:54:55,533 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-14 16:54:55,952 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-14 16:54:56,221 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-14 16:54:56,494 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-14 16:54:56,694 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-14 16:54:57,391 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-14 16:54:57,695 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-14 16:54:58,088 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:54:58,360 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-14 16:54:58,644 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-14 16:54:58,850 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-14 16:54:59,277 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-14 16:54:59,561 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-14 16:54:59,866 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-14 16:55:00,271 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-14 16:55:00,601 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-14 16:55:00,902 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-14 16:55:01,100 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-14 16:55:01,501 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-14 16:55:01,786 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-14 16:55:02,331 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-14 16:55:02,603 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-14 16:55:02,799 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-14 16:55:03,222 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-14 16:55:03,486 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-14 16:55:04,037 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-14 16:55:04,263 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:55:05,016 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:55:05,238 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:55:06,072 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:55:06,290 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:55:07,035 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-14 16:55:07,255 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-14 16:55:08,003 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-14 16:55:08,224 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-14 16:55:08,968 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-14 16:55:09,187 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-14 16:55:09,930 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-14 16:55:10,165 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-14 16:55:10,466 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-14 16:55:10,920 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-14 16:55:11,202 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-14 16:55:11,448 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-14 16:55:11,629 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-14 16:55:11,878 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-14 16:55:12,267 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-14 16:55:12,536 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-14 16:55:12,877 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-14 16:55:13,070 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-14 16:55:13,401 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-14 16:55:13,613 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-14 16:55:13,840 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-14 16:55:14,103 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-14 16:55:14,291 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-14 16:55:14,624 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:55:14,839 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-14 16:55:15,078 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-14 16:55:15,334 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-14 16:55:15,521 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-14 16:55:15,874 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:55:16,132 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-14 16:55:16,353 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-14 16:55:16,609 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-14 16:55:17,211 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:17,426 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:17,628 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-14 16:55:17,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-14 16:55:17,628 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-14 16:55:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:17,631 INFO L225 Difference]: With dead ends: 568 [2018-10-14 16:55:17,631 INFO L226 Difference]: Without dead ends: 568 [2018-10-14 16:55:17,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=3776, Invalid=26674, Unknown=0, NotChecked=0, Total=30450 [2018-10-14 16:55:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-14 16:55:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-14 16:55:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-14 16:55:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-14 16:55:17,639 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-14 16:55:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:17,640 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-14 16:55:17,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:55:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-14 16:55:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-14 16:55:17,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:55:17,644 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:55:17,644 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:55:17,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:55:17,644 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-14 16:55:17,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:55:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:55:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:23,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:23,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-14 16:55:23,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-14 16:55:23,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-14 16:55:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-14 16:55:23,583 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-14 16:55:25,777 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2018-10-14 16:55:26,221 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-14 16:55:26,485 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:55:32,767 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-14 16:55:33,032 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:33,391 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:33,618 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-14 16:55:34,411 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:34,634 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:35,118 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:55:35,916 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-14 16:55:36,139 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-14 16:55:36,698 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-14 16:55:37,633 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-14 16:55:37,916 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-14 16:55:38,270 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-14 16:55:38,543 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-14 16:55:38,850 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-14 16:55:39,074 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-14 16:55:39,484 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-14 16:55:39,783 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-14 16:55:40,352 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-14 16:55:40,596 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-14 16:55:41,015 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-14 16:55:41,422 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-14 16:55:41,731 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-14 16:55:42,244 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-14 16:55:42,500 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-14 16:55:42,976 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-14 16:55:43,343 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-14 16:55:43,608 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-14 16:55:44,125 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-14 16:55:44,374 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-14 16:55:44,720 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-14 16:55:44,951 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-14 16:55:45,194 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-14 16:55:45,480 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-14 16:55:45,682 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-14 16:55:46,051 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-14 16:55:46,275 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-14 16:55:46,534 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-14 16:55:46,863 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-14 16:55:47,069 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-14 16:55:47,412 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-14 16:55:47,625 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-14 16:55:47,862 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-14 16:55:48,129 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-14 16:55:48,318 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-14 16:55:48,653 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-14 16:55:48,865 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:55:49,092 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-14 16:55:49,348 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-14 16:55:50,000 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-14 16:55:50,229 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-14 16:55:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:50,457 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-14 16:55:50,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-14 16:55:50,458 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-14 16:55:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:50,460 INFO L225 Difference]: With dead ends: 591 [2018-10-14 16:55:50,460 INFO L226 Difference]: Without dead ends: 591 [2018-10-14 16:55:50,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-14 16:55:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-14 16:55:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-14 16:55:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-14 16:55:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-14 16:55:50,468 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-14 16:55:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:50,468 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-14 16:55:50,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-14 16:55:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-14 16:55:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-14 16:55:50,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:55:50,473 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:55:50,473 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:55:50,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:55:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-14 16:55:50,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:55:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:55:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:55:52,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:55:52,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-14 16:55:52,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-14 16:55:52,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-14 16:55:52,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-14 16:55:52,787 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-14 16:55:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:55:53,775 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-14 16:55:53,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-14 16:55:53,776 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-14 16:55:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:55:53,777 INFO L225 Difference]: With dead ends: 555 [2018-10-14 16:55:53,777 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:55:53,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-14 16:55:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:55:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:55:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:55:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:55:53,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-14 16:55:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:55:53,779 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:55:53,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-14 16:55:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:55:53,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:55:53,785 INFO L202 PluginConnector]: Adding new model optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:55:53 BoogieIcfgContainer [2018-10-14 16:55:53,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:55:53,786 INFO L168 Benchmark]: Toolchain (without parser) took 295243.39 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 69.7 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 143.1 MB). Peak memory consumption was 212.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:53,787 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:55:53,787 INFO L168 Benchmark]: Boogie Preprocessor took 90.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:55:53,787 INFO L168 Benchmark]: RCFGBuilder took 891.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:53,787 INFO L168 Benchmark]: TraceAbstraction took 294255.07 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 69.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 100.8 MB). Peak memory consumption was 170.5 MB. Max. memory is 7.1 GB. [2018-10-14 16:55:53,788 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 0.20 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 90.61 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 891.29 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 294255.07 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 69.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 100.8 MB). Peak memory consumption was 170.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 1 error locations. SAFE Result, 294.1s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 230.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 178.9s 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: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 420 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 51.2s 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_true-valid-memsafety.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-55-53-796.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_true-valid-memsafety.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-55-53-796.csv Received shutdown request...