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 0.1.23-502d2f4 [2018-10-12 21:10:50,441 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 21:10:50,443 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 21:10:50,456 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 21:10:50,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 21:10:50,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 21:10:50,458 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 21:10:50,460 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 21:10:50,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 21:10:50,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 21:10:50,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 21:10:50,487 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 21:10:50,501 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 21:10:50,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 21:10:50,503 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 21:10:50,503 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 21:10:50,504 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 21:10:50,504 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 21:10:50,504 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 21:10:50,505 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 21:10:50,505 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 21:10:50,506 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 21:10:50,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 21:10:50,506 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 21:10:50,506 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 21:10:50,507 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 21:10:50,507 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 21:10:50,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 21:10:50,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 21:10:50,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 21:10:50,574 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 21:10:50,575 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 21:10:50,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-12 21:10:50,576 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/optional_data_creation_test04_true-valid-memsafety.i_35.bpl' [2018-10-12 21:10:50,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 21:10:50,663 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 21:10:50,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 21:10:50,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 21:10:50,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 21:10:50,692 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,694 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,717 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,718 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,734 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,740 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,744 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 12.10 09:10:50" (1/1) ... [2018-10-12 21:10:50,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 21:10:50,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 21:10:50,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 21:10:50,754 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 21:10:50,756 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 12.10 09:10:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 21:10:50,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 21:10:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 21:10:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 21:10:51,607 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 21:10:51,609 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 12.10 09:10:51 BoogieIcfgContainer [2018-10-12 21:10:51,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 21:10:51,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 21:10:51,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 21:10:51,613 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 21:10:51,614 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 12.10 09:10:50" (1/2) ... [2018-10-12 21:10:51,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488fe513 and model type optional_data_creation_test04_true-valid-memsafety.i_35.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:51, skipping insertion in model container [2018-10-12 21:10:51,615 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 12.10 09:10:51" (2/2) ... [2018-10-12 21:10:51,617 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_true-valid-memsafety.i_35.bpl [2018-10-12 21:10:51,627 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 21:10:51,636 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 21:10:51,652 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 21:10:51,681 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 21:10:51,682 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 21:10:51,682 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 21:10:51,683 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 21:10:51,683 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 21:10:51,683 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 21:10:51,683 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 21:10:51,683 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 21:10:51,683 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 21:10:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-12 21:10:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-12 21:10:51,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:51,720 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:51,721 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:51,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash 679445538, now seen corresponding path program 1 times [2018-10-12 21:10:51,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:53,000 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-12 21:10:53,342 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-12 21:10:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:53,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 21:10:53,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-12 21:10:53,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-12 21:10:53,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-12 21:10:53,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-10-12 21:10:53,718 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 17 states. [2018-10-12 21:10:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:55,713 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-12 21:10:55,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-12 21:10:55,716 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2018-10-12 21:10:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:55,732 INFO L225 Difference]: With dead ends: 154 [2018-10-12 21:10:55,732 INFO L226 Difference]: Without dead ends: 154 [2018-10-12 21:10:55,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:10:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-12 21:10:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2018-10-12 21:10:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-12 21:10:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-12 21:10:55,786 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 109 [2018-10-12 21:10:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:55,787 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-12 21:10:55,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-12 21:10:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-12 21:10:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-12 21:10:55,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:55,792 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:55,793 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:55,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1648257160, now seen corresponding path program 1 times [2018-10-12 21:10:55,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:10:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:10:56,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:10:56,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-12 21:10:56,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-12 21:10:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-12 21:10:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-12 21:10:56,582 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 19 states. [2018-10-12 21:10:57,688 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-12 21:10:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:10:58,824 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-12 21:10:58,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-12 21:10:58,825 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2018-10-12 21:10:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:10:58,828 INFO L225 Difference]: With dead ends: 177 [2018-10-12 21:10:58,828 INFO L226 Difference]: Without dead ends: 177 [2018-10-12 21:10:58,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2018-10-12 21:10:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-12 21:10:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2018-10-12 21:10:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-12 21:10:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-12 21:10:58,844 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 132 [2018-10-12 21:10:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:10:58,845 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-12 21:10:58,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-12 21:10:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-12 21:10:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-12 21:10:58,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:10:58,848 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:10:58,849 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:10:58,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:10:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash 610280290, now seen corresponding path program 2 times [2018-10-12 21:10:58,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:10:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:00,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:00,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-12 21:11:00,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-12 21:11:00,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-12 21:11:00,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-10-12 21:11:00,133 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 21 states. [2018-10-12 21:11:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:02,653 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-12 21:11:02,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-12 21:11:02,654 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2018-10-12 21:11:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:02,657 INFO L225 Difference]: With dead ends: 200 [2018-10-12 21:11:02,657 INFO L226 Difference]: Without dead ends: 200 [2018-10-12 21:11:02,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:11:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-12 21:11:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2018-10-12 21:11:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-12 21:11:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-12 21:11:02,693 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 155 [2018-10-12 21:11:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:02,694 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-12 21:11:02,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-12 21:11:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-12 21:11:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-12 21:11:02,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:02,703 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:02,703 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:02,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:02,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1040306232, now seen corresponding path program 3 times [2018-10-12 21:11:02,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:04,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:04,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-12 21:11:04,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-12 21:11:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-12 21:11:04,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-10-12 21:11:04,189 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 23 states. [2018-10-12 21:11:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:06,898 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-12 21:11:06,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-12 21:11:06,905 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 178 [2018-10-12 21:11:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:06,907 INFO L225 Difference]: With dead ends: 223 [2018-10-12 21:11:06,907 INFO L226 Difference]: Without dead ends: 223 [2018-10-12 21:11:06,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=516, Invalid=1740, Unknown=0, NotChecked=0, Total=2256 [2018-10-12 21:11:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-12 21:11:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 202. [2018-10-12 21:11:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-12 21:11:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-12 21:11:06,928 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 178 [2018-10-12 21:11:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:06,929 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-12 21:11:06,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-12 21:11:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-12 21:11:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-12 21:11:06,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:06,936 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:06,936 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:06,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1802759518, now seen corresponding path program 4 times [2018-10-12 21:11:06,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:09,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:09,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 21:11:09,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 21:11:09,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 21:11:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:11:09,123 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 33 states. [2018-10-12 21:11:10,053 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-10-12 21:11:12,020 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-12 21:11:13,474 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:11:13,701 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:11:14,003 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:11:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:14,294 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-12 21:11:14,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 21:11:14,296 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 201 [2018-10-12 21:11:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:14,298 INFO L225 Difference]: With dead ends: 246 [2018-10-12 21:11:14,298 INFO L226 Difference]: Without dead ends: 246 [2018-10-12 21:11:14,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2018-10-12 21:11:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-12 21:11:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2018-10-12 21:11:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-12 21:11:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-12 21:11:14,307 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 201 [2018-10-12 21:11:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:14,307 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-12 21:11:14,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 21:11:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-12 21:11:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-12 21:11:14,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:14,311 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:14,311 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:14,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1111275768, now seen corresponding path program 5 times [2018-10-12 21:11:14,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:15,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:15,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-12 21:11:15,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-12 21:11:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-12 21:11:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2018-10-12 21:11:15,950 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 33 states. [2018-10-12 21:11:17,154 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-12 21:11:17,350 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:11:17,578 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:11:17,741 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:11:17,966 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:11:18,121 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:11:18,656 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:11:19,015 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:11:19,291 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2018-10-12 21:11:19,502 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2018-10-12 21:11:19,732 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:11:19,947 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2018-10-12 21:11:20,574 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2018-10-12 21:11:20,832 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2018-10-12 21:11:21,297 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2018-10-12 21:11:21,526 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-12 21:11:21,720 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2018-10-12 21:11:22,004 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2018-10-12 21:11:22,245 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-12 21:11:22,492 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-12 21:11:22,693 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2018-10-12 21:11:22,922 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-10-12 21:11:23,117 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2018-10-12 21:11:23,273 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-12 21:11:23,437 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-12 21:11:23,612 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-12 21:11:23,820 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:11:24,311 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:11:24,485 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:11:24,661 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:11:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:24,824 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-12 21:11:24,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-12 21:11:24,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2018-10-12 21:11:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:24,828 INFO L225 Difference]: With dead ends: 269 [2018-10-12 21:11:24,828 INFO L226 Difference]: Without dead ends: 269 [2018-10-12 21:11:24,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1404, Invalid=4758, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 21:11:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-12 21:11:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2018-10-12 21:11:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-12 21:11:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-12 21:11:24,839 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 224 [2018-10-12 21:11:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:24,839 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-12 21:11:24,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-12 21:11:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-12 21:11:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-12 21:11:24,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:24,843 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:24,843 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:24,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash -642297374, now seen corresponding path program 6 times [2018-10-12 21:11:24,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:26,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:26,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 21:11:26,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 21:11:26,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 21:11:26,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-10-12 21:11:26,244 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 29 states. [2018-10-12 21:11:29,636 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-10-12 21:11:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:30,694 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-10-12 21:11:30,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-12 21:11:30,695 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 247 [2018-10-12 21:11:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:30,697 INFO L225 Difference]: With dead ends: 292 [2018-10-12 21:11:30,697 INFO L226 Difference]: Without dead ends: 292 [2018-10-12 21:11:30,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-10-12 21:11:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-12 21:11:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2018-10-12 21:11:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-12 21:11:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-12 21:11:30,704 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 247 [2018-10-12 21:11:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:30,704 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-12 21:11:30,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 21:11:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-12 21:11:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-12 21:11:30,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:30,707 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:30,708 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:30,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1086434888, now seen corresponding path program 7 times [2018-10-12 21:11:30,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:32,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:32,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 21:11:32,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 21:11:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 21:11:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2018-10-12 21:11:32,133 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 31 states. [2018-10-12 21:11:34,626 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-10-12 21:11:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:37,221 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-12 21:11:37,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 21:11:37,222 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 270 [2018-10-12 21:11:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:37,224 INFO L225 Difference]: With dead ends: 315 [2018-10-12 21:11:37,224 INFO L226 Difference]: Without dead ends: 315 [2018-10-12 21:11:37,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 21:11:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-12 21:11:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2018-10-12 21:11:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-12 21:11:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-12 21:11:37,233 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 270 [2018-10-12 21:11:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:37,234 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-12 21:11:37,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 21:11:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-12 21:11:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-12 21:11:37,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:37,237 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:37,237 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:37,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:37,238 INFO L82 PathProgramCache]: Analyzing trace with hash 966123810, now seen corresponding path program 8 times [2018-10-12 21:11:37,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:39,263 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-10-12 21:11:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:40,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:40,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:11:40,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:11:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:11:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:11:40,334 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 41 states. [2018-10-12 21:11:42,667 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-12 21:11:44,723 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-12 21:11:44,908 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:11:48,171 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-12 21:11:48,349 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:11:48,556 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:11:48,834 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:11:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:11:49,154 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-10-12 21:11:49,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-12 21:11:49,155 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 293 [2018-10-12 21:11:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:11:49,157 INFO L225 Difference]: With dead ends: 338 [2018-10-12 21:11:49,157 INFO L226 Difference]: Without dead ends: 338 [2018-10-12 21:11:49,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1182, Invalid=7008, Unknown=0, NotChecked=0, Total=8190 [2018-10-12 21:11:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-12 21:11:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 317. [2018-10-12 21:11:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-12 21:11:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-12 21:11:49,166 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 293 [2018-10-12 21:11:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:11:49,167 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-12 21:11:49,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:11:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-12 21:11:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-12 21:11:49,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:11:49,169 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:11:49,169 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:11:49,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:11:49,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1154652792, now seen corresponding path program 9 times [2018-10-12 21:11:49,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:11:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:11:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:11:52,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:11:52,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:11:52,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:11:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:11:52,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:11:52,396 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 41 states. [2018-10-12 21:11:53,983 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:11:54,255 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:11:54,423 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:11:54,604 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:11:54,803 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:11:55,167 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-12 21:11:55,381 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:11:55,753 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:11:55,971 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:11:56,141 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 21:11:56,640 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-12 21:11:56,876 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:11:57,154 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:11:57,370 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:11:57,591 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2018-10-12 21:11:57,762 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:11:58,275 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:11:58,512 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2018-10-12 21:11:58,800 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-12 21:11:59,044 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-10-12 21:11:59,706 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2018-10-12 21:11:59,887 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-12 21:12:00,442 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:12:00,613 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:12:01,148 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-10-12 21:12:01,340 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-12 21:12:01,569 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-10-12 21:12:01,845 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-12 21:12:02,071 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-12 21:12:02,244 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:12:02,572 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-12 21:12:02,848 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 21:12:03,060 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-12 21:12:03,317 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 21:12:03,469 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:12:03,743 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:12:03,926 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:12:04,116 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:12:04,338 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-12 21:12:04,667 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:12:04,849 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:12:05,059 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:12:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:05,275 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-12 21:12:05,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-12 21:12:05,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 316 [2018-10-12 21:12:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:05,279 INFO L225 Difference]: With dead ends: 361 [2018-10-12 21:12:05,279 INFO L226 Difference]: Without dead ends: 361 [2018-10-12 21:12:05,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1957, Invalid=9599, Unknown=0, NotChecked=0, Total=11556 [2018-10-12 21:12:05,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-12 21:12:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2018-10-12 21:12:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-12 21:12:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-12 21:12:05,290 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 316 [2018-10-12 21:12:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:05,290 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-12 21:12:05,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-12 21:12:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-12 21:12:05,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:05,293 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:05,293 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:05,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:05,294 INFO L82 PathProgramCache]: Analyzing trace with hash 517718114, now seen corresponding path program 10 times [2018-10-12 21:12:05,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 1175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:08,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:08,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:12:08,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:12:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:12:08,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1498, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:12:08,072 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 41 states. [2018-10-12 21:12:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:16,746 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-10-12 21:12:16,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-12 21:12:16,749 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 339 [2018-10-12 21:12:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:16,752 INFO L225 Difference]: With dead ends: 384 [2018-10-12 21:12:16,752 INFO L226 Difference]: Without dead ends: 384 [2018-10-12 21:12:16,755 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 [2018-10-12 21:12:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-12 21:12:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 363. [2018-10-12 21:12:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-12 21:12:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-12 21:12:16,761 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 339 [2018-10-12 21:12:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:16,762 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-12 21:12:16,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-12 21:12:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-12 21:12:16,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:16,764 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:16,765 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:16,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:16,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1647996104, now seen corresponding path program 11 times [2018-10-12 21:12:16,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:19,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:19,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-12 21:12:19,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-12 21:12:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-12 21:12:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2018-10-12 21:12:19,407 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 39 states. [2018-10-12 21:12:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:29,039 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-12 21:12:29,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-12 21:12:29,039 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 362 [2018-10-12 21:12:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:29,041 INFO L225 Difference]: With dead ends: 407 [2018-10-12 21:12:29,042 INFO L226 Difference]: Without dead ends: 407 [2018-10-12 21:12:29,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1092, Invalid=6564, Unknown=0, NotChecked=0, Total=7656 [2018-10-12 21:12:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-12 21:12:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 386. [2018-10-12 21:12:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-12 21:12:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2018-10-12 21:12:29,050 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 362 [2018-10-12 21:12:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:29,050 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2018-10-12 21:12:29,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-12 21:12:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2018-10-12 21:12:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-12 21:12:29,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:29,053 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:29,054 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:29,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1497165730, now seen corresponding path program 12 times [2018-10-12 21:12:29,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 0 proven. 1686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:32,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:32,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-12 21:12:32,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-12 21:12:32,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-12 21:12:32,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-10-12 21:12:32,084 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 41 states. [2018-10-12 21:12:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:41,365 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-10-12 21:12:41,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-12 21:12:41,366 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 385 [2018-10-12 21:12:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:41,368 INFO L225 Difference]: With dead ends: 430 [2018-10-12 21:12:41,369 INFO L226 Difference]: Without dead ends: 430 [2018-10-12 21:12:41,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1164, Invalid=7392, Unknown=0, NotChecked=0, Total=8556 [2018-10-12 21:12:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-12 21:12:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 409. [2018-10-12 21:12:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-12 21:12:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-12 21:12:41,377 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 385 [2018-10-12 21:12:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:41,378 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-12 21:12:41,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-12 21:12:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-12 21:12:41,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-12 21:12:41,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:41,381 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:41,382 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:41,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1880933384, now seen corresponding path program 13 times [2018-10-12 21:12:41,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:12:43,503 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-12 21:12:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:12:46,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:12:46,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 21:12:46,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 21:12:46,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 21:12:46,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:12:46,075 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 43 states. [2018-10-12 21:12:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:12:57,171 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-12 21:12:57,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-12 21:12:57,171 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 408 [2018-10-12 21:12:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:12:57,175 INFO L225 Difference]: With dead ends: 453 [2018-10-12 21:12:57,175 INFO L226 Difference]: Without dead ends: 453 [2018-10-12 21:12:57,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1236, Invalid=8270, Unknown=0, NotChecked=0, Total=9506 [2018-10-12 21:12:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-12 21:12:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 432. [2018-10-12 21:12:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-12 21:12:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2018-10-12 21:12:57,183 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 408 [2018-10-12 21:12:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:12:57,184 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2018-10-12 21:12:57,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 21:12:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2018-10-12 21:12:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-12 21:12:57,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:12:57,187 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:12:57,187 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:12:57,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:12:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1567452898, now seen corresponding path program 14 times [2018-10-12 21:12:57,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:12:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 0 proven. 2289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:01,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:01,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-12 21:13:01,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-12 21:13:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-12 21:13:01,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2018-10-12 21:13:01,949 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand 51 states. [2018-10-12 21:13:03,875 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:13:04,210 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:13:04,411 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:13:04,628 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-12 21:13:04,819 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2018-10-12 21:13:05,463 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-10-12 21:13:05,963 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-12 21:13:15,946 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-12 21:13:16,158 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2018-10-12 21:13:16,426 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-10-12 21:13:16,814 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2018-10-12 21:13:17,097 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-12 21:13:17,887 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:13:18,117 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:13:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:18,364 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2018-10-12 21:13:18,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-12 21:13:18,364 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 431 [2018-10-12 21:13:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:18,367 INFO L225 Difference]: With dead ends: 476 [2018-10-12 21:13:18,368 INFO L226 Difference]: Without dead ends: 476 [2018-10-12 21:13:18,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1701, Invalid=12341, Unknown=0, NotChecked=0, Total=14042 [2018-10-12 21:13:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-12 21:13:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 455. [2018-10-12 21:13:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-12 21:13:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-12 21:13:18,380 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 431 [2018-10-12 21:13:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:18,380 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-12 21:13:18,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-12 21:13:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-12 21:13:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-12 21:13:18,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:18,384 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:13:18,384 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:18,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1678273352, now seen corresponding path program 15 times [2018-10-12 21:13:18,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:20,647 WARN L178 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-12 21:13:21,142 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-12 21:13:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:25,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:25,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-12 21:13:25,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-12 21:13:25,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-12 21:13:25,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2018-10-12 21:13:25,346 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 56 states. [2018-10-12 21:13:27,873 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-10-12 21:13:28,632 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2018-10-12 21:13:28,864 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-12 21:13:29,156 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-12 21:13:29,537 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-10-12 21:13:29,785 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2018-10-12 21:13:30,033 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2018-10-12 21:13:30,225 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:13:30,872 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2018-10-12 21:13:31,180 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-12 21:13:31,569 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:13:31,833 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2018-10-12 21:13:32,136 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-12 21:13:32,352 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-10-12 21:13:32,763 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-10-12 21:13:33,042 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-12 21:13:33,456 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2018-10-12 21:13:33,837 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-10-12 21:13:34,102 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:13:34,394 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2018-10-12 21:13:34,578 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2018-10-12 21:13:35,224 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2018-10-12 21:13:35,738 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2018-10-12 21:13:35,923 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2018-10-12 21:13:36,595 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:36,788 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:37,580 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:37,769 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:37,946 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-10-12 21:13:38,482 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:38,671 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-12 21:13:39,356 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-10-12 21:13:39,543 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-12 21:13:40,227 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:13:40,419 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-12 21:13:41,122 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2018-10-12 21:13:41,315 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2018-10-12 21:13:42,013 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2018-10-12 21:13:42,211 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-12 21:13:42,660 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2018-10-12 21:13:42,992 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-12 21:13:43,214 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2018-10-12 21:13:43,501 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-10-12 21:13:43,897 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-12 21:13:44,161 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2018-10-12 21:13:44,370 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:13:44,766 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-10-12 21:13:45,138 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2018-10-12 21:13:45,386 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-10-12 21:13:45,699 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-12 21:13:45,872 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:13:46,181 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 21:13:46,386 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-12 21:13:46,605 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-12 21:13:46,852 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2018-10-12 21:13:47,409 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-12 21:13:47,942 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:13:48,154 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2018-10-12 21:13:48,380 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:13:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:13:48,587 INFO L93 Difference]: Finished difference Result 499 states and 499 transitions. [2018-10-12 21:13:48,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-12 21:13:48,588 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 454 [2018-10-12 21:13:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:13:48,590 INFO L225 Difference]: With dead ends: 499 [2018-10-12 21:13:48,590 INFO L226 Difference]: Without dead ends: 499 [2018-10-12 21:13:48,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4884 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=2679, Invalid=18491, Unknown=0, NotChecked=0, Total=21170 [2018-10-12 21:13:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-12 21:13:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2018-10-12 21:13:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-12 21:13:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2018-10-12 21:13:48,604 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 454 [2018-10-12 21:13:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:13:48,604 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2018-10-12 21:13:48,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-12 21:13:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2018-10-12 21:13:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-12 21:13:48,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:13:48,608 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:13:48,608 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:13:48,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:13:48,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2061418974, now seen corresponding path program 16 times [2018-10-12 21:13:48,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:13:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:13:50,610 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-12 21:13:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 0 proven. 2984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:13:55,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:13:55,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:13:55,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:13:55,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:13:55,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:13:55,039 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand 57 states. [2018-10-12 21:14:02,037 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:02,605 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 21:14:02,850 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-12 21:14:03,052 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-12 21:14:03,672 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:04,166 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-12 21:14:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:14:11,029 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2018-10-12 21:14:11,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-12 21:14:11,029 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 477 [2018-10-12 21:14:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:14:11,031 INFO L225 Difference]: With dead ends: 522 [2018-10-12 21:14:11,031 INFO L226 Difference]: Without dead ends: 522 [2018-10-12 21:14:11,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1685, Invalid=14571, Unknown=0, NotChecked=0, Total=16256 [2018-10-12 21:14:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-10-12 21:14:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 501. [2018-10-12 21:14:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-10-12 21:14:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 501 transitions. [2018-10-12 21:14:11,039 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 501 transitions. Word has length 477 [2018-10-12 21:14:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:14:11,040 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 501 transitions. [2018-10-12 21:14:11,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:14:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 501 transitions. [2018-10-12 21:14:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-12 21:14:11,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:14:11,043 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:14:11,044 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:14:11,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:14:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1110532744, now seen corresponding path program 17 times [2018-10-12 21:14:11,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:14:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 3366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:16,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:16,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-12 21:14:16,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-12 21:14:16,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-12 21:14:16,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2995, Unknown=0, NotChecked=0, Total=3192 [2018-10-12 21:14:16,365 INFO L87 Difference]: Start difference. First operand 501 states and 501 transitions. Second operand 57 states. [2018-10-12 21:14:18,163 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-10-12 21:14:18,492 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:14:18,865 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-10-12 21:14:19,085 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 21:14:19,307 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2018-10-12 21:14:19,507 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 21:14:19,903 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2018-10-12 21:14:20,169 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-12 21:14:20,698 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-12 21:14:20,952 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:14:21,157 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 21:14:21,833 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-12 21:14:22,122 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:14:22,510 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:22,768 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:14:23,028 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:23,236 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:14:23,970 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-12 21:14:24,269 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:24,662 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:14:24,929 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:14:25,199 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-12 21:14:25,395 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-12 21:14:25,786 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-12 21:14:26,052 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-12 21:14:26,346 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:14:26,725 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:14:27,006 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-12 21:14:27,287 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2018-10-12 21:14:27,492 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:14:27,913 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2018-10-12 21:14:28,189 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:14:28,583 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:28,980 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2018-10-12 21:14:29,268 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2018-10-12 21:14:29,484 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:14:30,218 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2018-10-12 21:14:30,427 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2018-10-12 21:14:31,137 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-10-12 21:14:31,360 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:14:32,089 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:14:32,303 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:14:33,053 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:33,268 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:33,447 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2018-10-12 21:14:34,079 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-12 21:14:34,300 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:14:35,019 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:14:35,234 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:14:35,612 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2018-10-12 21:14:35,965 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:36,208 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2018-10-12 21:14:36,503 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-10-12 21:14:36,885 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2018-10-12 21:14:37,166 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2018-10-12 21:14:37,399 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2018-10-12 21:14:37,833 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2018-10-12 21:14:38,219 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-12 21:14:38,478 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-10-12 21:14:38,880 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2018-10-12 21:14:39,076 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2018-10-12 21:14:39,404 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-12 21:14:39,611 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2018-10-12 21:14:39,845 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-12 21:14:40,120 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2018-10-12 21:14:40,321 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-12 21:14:40,669 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-12 21:14:40,891 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-12 21:14:41,129 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-12 21:14:41,400 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-10-12 21:14:41,609 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-12 21:14:41,954 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:14:42,171 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:14:42,404 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:14:42,685 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-10-12 21:14:43,102 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-12 21:14:43,317 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-12 21:14:43,550 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-12 21:14:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:14:43,815 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-12 21:14:43,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-12 21:14:43,816 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 500 [2018-10-12 21:14:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:14:43,818 INFO L225 Difference]: With dead ends: 545 [2018-10-12 21:14:43,818 INFO L226 Difference]: Without dead ends: 545 [2018-10-12 21:14:43,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=3448, Invalid=22634, Unknown=0, NotChecked=0, Total=26082 [2018-10-12 21:14:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-10-12 21:14:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2018-10-12 21:14:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-12 21:14:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 524 transitions. [2018-10-12 21:14:43,826 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 524 transitions. Word has length 500 [2018-10-12 21:14:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:14:43,826 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 524 transitions. [2018-10-12 21:14:43,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-12 21:14:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 524 transitions. [2018-10-12 21:14:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-12 21:14:43,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:14:43,830 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:14:43,830 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:14:43,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:14:43,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1326210402, now seen corresponding path program 18 times [2018-10-12 21:14:43,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:14:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:14:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 3771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:14:49,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:14:49,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-12 21:14:49,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-12 21:14:49,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-12 21:14:49,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3568, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 21:14:49,301 INFO L87 Difference]: Start difference. First operand 524 states and 524 transitions. Second operand 62 states. [2018-10-12 21:14:52,383 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:53,188 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-10-12 21:14:53,624 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-10-12 21:14:53,865 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-12 21:14:54,090 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-12 21:14:54,756 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-12 21:14:54,982 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:55,283 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-10-12 21:14:55,689 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2018-10-12 21:14:55,962 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2018-10-12 21:14:56,245 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 21:14:56,448 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:14:57,158 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2018-10-12 21:14:57,467 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-12 21:14:57,877 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2018-10-12 21:14:58,159 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-12 21:14:58,446 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2018-10-12 21:14:58,650 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2018-10-12 21:14:59,102 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2018-10-12 21:14:59,438 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-12 21:14:59,753 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2018-10-12 21:15:00,174 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 21:15:00,463 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-10-12 21:15:00,768 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-12 21:15:01,002 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2018-10-12 21:15:01,454 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2018-10-12 21:15:01,747 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-10-12 21:15:02,079 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2018-10-12 21:15:02,516 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-10-12 21:15:02,826 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2018-10-12 21:15:03,116 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2018-10-12 21:15:03,326 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2018-10-12 21:15:03,750 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2018-10-12 21:15:04,032 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2018-10-12 21:15:04,689 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2018-10-12 21:15:04,972 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2018-10-12 21:15:05,173 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-10-12 21:15:05,621 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2018-10-12 21:15:05,904 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2018-10-12 21:15:06,479 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2018-10-12 21:15:06,708 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:15:07,474 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:15:07,702 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:15:08,470 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:15:08,691 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:15:09,512 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2018-10-12 21:15:09,754 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-12 21:15:10,532 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2018-10-12 21:15:10,763 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2018-10-12 21:15:11,528 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2018-10-12 21:15:11,756 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2018-10-12 21:15:12,158 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2018-10-12 21:15:12,543 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-10-12 21:15:12,799 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-12 21:15:13,114 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2018-10-12 21:15:13,529 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-12 21:15:13,824 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2018-10-12 21:15:14,076 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-10-12 21:15:14,262 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-10-12 21:15:14,566 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-10-12 21:15:15,025 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-12 21:15:15,314 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-12 21:15:15,675 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2018-10-12 21:15:15,882 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2018-10-12 21:15:16,231 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-12 21:15:16,457 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2018-10-12 21:15:16,695 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2018-10-12 21:15:16,967 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-12 21:15:17,178 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-10-12 21:15:17,526 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-12 21:15:17,755 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2018-10-12 21:15:17,996 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2018-10-12 21:15:18,272 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-12 21:15:18,460 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-12 21:15:18,794 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-12 21:15:19,008 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2018-10-12 21:15:19,231 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-12 21:15:19,492 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-10-12 21:15:20,201 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:20,423 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:20,632 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2018-10-12 21:15:20,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-12 21:15:20,633 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 523 [2018-10-12 21:15:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:20,635 INFO L225 Difference]: With dead ends: 568 [2018-10-12 21:15:20,635 INFO L226 Difference]: Without dead ends: 568 [2018-10-12 21:15:20,636 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 [2018-10-12 21:15:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-12 21:15:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 547. [2018-10-12 21:15:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-12 21:15:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-12 21:15:20,643 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 523 [2018-10-12 21:15:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:20,644 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-12 21:15:20,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-12 21:15:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-12 21:15:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-12 21:15:20,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:20,647 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:15:20,648 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:20,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash 741627448, now seen corresponding path program 19 times [2018-10-12 21:15:20,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 0 proven. 4199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:15:27,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:15:27,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-12 21:15:27,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-12 21:15:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-12 21:15:27,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3993, Unknown=0, NotChecked=0, Total=4290 [2018-10-12 21:15:27,006 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 66 states. [2018-10-12 21:15:29,823 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 21:15:36,565 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-10-12 21:15:36,840 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:37,230 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:37,455 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 21:15:38,257 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:38,499 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:38,992 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 21:15:39,796 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-12 21:15:40,049 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-12 21:15:40,563 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-12 21:15:41,298 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-12 21:15:41,503 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-10-12 21:15:41,778 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-10-12 21:15:42,137 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-12 21:15:42,399 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2018-10-12 21:15:42,705 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-10-12 21:15:42,932 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2018-10-12 21:15:43,354 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2018-10-12 21:15:43,653 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-10-12 21:15:44,209 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2018-10-12 21:15:44,457 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2018-10-12 21:15:44,891 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2018-10-12 21:15:45,344 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-12 21:15:45,629 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2018-10-12 21:15:46,180 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2018-10-12 21:15:46,439 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-10-12 21:15:46,623 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-10-12 21:15:46,888 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2018-10-12 21:15:47,283 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-10-12 21:15:47,584 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2018-10-12 21:15:48,125 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2018-10-12 21:15:48,380 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2018-10-12 21:15:48,743 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2018-10-12 21:15:48,979 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2018-10-12 21:15:49,225 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2018-10-12 21:15:49,519 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-12 21:15:49,737 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2018-10-12 21:15:50,102 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-12 21:15:50,365 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-12 21:15:50,668 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-12 21:15:50,953 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2018-10-12 21:15:51,159 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-12 21:15:51,510 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2018-10-12 21:15:51,744 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-10-12 21:15:51,989 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2018-10-12 21:15:52,274 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2018-10-12 21:15:52,471 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2018-10-12 21:15:52,819 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-12 21:15:53,048 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-12 21:15:53,296 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-12 21:15:53,565 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-10-12 21:15:54,014 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-12 21:15:54,251 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-10-12 21:15:54,488 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-12 21:15:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:54,732 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2018-10-12 21:15:54,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-12 21:15:54,732 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 546 [2018-10-12 21:15:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:54,734 INFO L225 Difference]: With dead ends: 591 [2018-10-12 21:15:54,734 INFO L226 Difference]: Without dead ends: 591 [2018-10-12 21:15:54,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7728 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=3611, Invalid=27895, Unknown=0, NotChecked=0, Total=31506 [2018-10-12 21:15:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-12 21:15:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 570. [2018-10-12 21:15:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-10-12 21:15:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2018-10-12 21:15:54,742 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 546 [2018-10-12 21:15:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2018-10-12 21:15:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-12 21:15:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2018-10-12 21:15:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-10-12 21:15:54,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 21:15:54,747 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 21:15:54,747 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 21:15:54,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 21:15:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1629303646, now seen corresponding path program 20 times [2018-10-12 21:15:54,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 21:15:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 21:15:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 4231 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 21:15:56,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 21:15:56,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-12 21:15:56,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-12 21:15:56,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-12 21:15:56,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2018-10-12 21:15:56,055 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand 43 states. [2018-10-12 21:15:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 21:15:57,072 INFO L93 Difference]: Finished difference Result 555 states and 554 transitions. [2018-10-12 21:15:57,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-12 21:15:57,072 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 569 [2018-10-12 21:15:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 21:15:57,074 INFO L225 Difference]: With dead ends: 555 [2018-10-12 21:15:57,074 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 21:15:57,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2010, Invalid=4796, Unknown=0, NotChecked=0, Total=6806 [2018-10-12 21:15:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 21:15:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 21:15:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 21:15:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 21:15:57,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 569 [2018-10-12 21:15:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 21:15:57,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 21:15:57,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-12 21:15:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 21:15:57,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 21:15:57,082 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 12.10 09:15:57 BoogieIcfgContainer [2018-10-12 21:15:57,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 21:15:57,083 INFO L168 Benchmark]: Toolchain (without parser) took 306421.08 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 10.0 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 9.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-12 21:15:57,083 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:15:57,083 INFO L168 Benchmark]: Boogie Preprocessor took 89.85 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:15:57,084 INFO L168 Benchmark]: RCFGBuilder took 855.20 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-12 21:15:57,084 INFO L168 Benchmark]: TraceAbstraction took 305471.79 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 10.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 21:15:57,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.85 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 855.20 ms. Allocated memory is still 1.6 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 305471.79 ms. Allocated memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 10.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -33.2 MB). There was no memory consumed. 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, 305.4s OverallTime, 21 OverallIterations, 21 TraceHistogramMax, 236.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3969 SDtfs, 57830 SDslu, 67561 SDs, 0 SdLazy, 91685 SolverSat, 3389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 82 SyntacticMatches, 17 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47385 ImplicationChecksByTransitivity, 186.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 420 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 56.4s InterpolantComputationTime, 7119 NumberOfCodeBlocks, 7119 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 7098 ConstructedInterpolants, 0 QuantifiedInterpolants, 59335894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 4231/33530 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_true-valid-memsafety.i_35.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_21-15-57-092.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-0-2018-10-12_21-15-57-092.csv Received shutdown request...