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/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:37:54,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:37:54,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:37:54,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:37:54,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:37:54,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:37:54,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:37:54,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:37:54,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:37:54,840 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:37:54,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:37:54,880 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:37:54,894 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:37:54,895 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:37:54,898 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:37:54,898 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:37:54,898 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:37:54,898 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:37:54,901 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:37:54,901 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:37:54,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:37:54,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:37:54,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:37:54,902 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:37:54,902 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:37:54,903 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:37:54,903 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:37:54,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:37:54,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:37:54,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:37:54,980 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:37:54,981 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:37:54,982 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl [2018-10-10 15:37:54,982 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl' [2018-10-10 15:37:55,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:37:55,082 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:37:55,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:37:55,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:37:55,083 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:37:55,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... [2018-10-10 15:37:55,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:37:55,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:37:55,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:37:55,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:37:55,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:37:55,259 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:37:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:37:55,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:37:56,212 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:37:56,213 INFO L202 PluginConnector]: Adding new model merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:37:56 BoogieIcfgContainer [2018-10-10 15:37:56,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:37:56,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:37:56,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:37:56,218 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:37:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:37:55" (1/2) ... [2018-10-10 15:37:56,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25125ebd and model type merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:37:56, skipping insertion in model container [2018-10-10 15:37:56,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:37:56" (2/2) ... [2018-10-10 15:37:56,222 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort_true-unreach-call_true-valid-memsafety.i_19.bpl [2018-10-10 15:37:56,232 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:37:56,240 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:37:56,258 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:37:56,286 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:37:56,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:37:56,287 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:37:56,288 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:37:56,288 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:37:56,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:37:56,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:37:56,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:37:56,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:37:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2018-10-10 15:37:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-10 15:37:56,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:56,320 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:37:56,321 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:56,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1440752284, now seen corresponding path program 1 times [2018-10-10 15:37:56,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:37:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:37:56,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:37:56,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:37:56,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:37:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:37:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:37:56,588 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2018-10-10 15:37:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:37:56,668 INFO L93 Difference]: Finished difference Result 200 states and 201 transitions. [2018-10-10 15:37:56,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:37:56,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-10 15:37:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:37:56,683 INFO L225 Difference]: With dead ends: 200 [2018-10-10 15:37:56,684 INFO L226 Difference]: Without dead ends: 198 [2018-10-10 15:37:56,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:37:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-10 15:37:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2018-10-10 15:37:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-10 15:37:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-10-10 15:37:56,735 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 17 [2018-10-10 15:37:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:37:56,736 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-10-10 15:37:56,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:37:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-10-10 15:37:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:37:56,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:56,740 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:37:56,740 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:56,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1358240742, now seen corresponding path program 1 times [2018-10-10 15:37:56,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:37:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:37:57,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:37:57,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:37:57,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:37:57,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:37:57,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:37:57,189 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 9 states. [2018-10-10 15:37:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:37:58,723 INFO L93 Difference]: Finished difference Result 202 states and 203 transitions. [2018-10-10 15:37:58,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:37:58,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2018-10-10 15:37:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:37:58,727 INFO L225 Difference]: With dead ends: 202 [2018-10-10 15:37:58,727 INFO L226 Difference]: Without dead ends: 202 [2018-10-10 15:37:58,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-10-10 15:37:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-10 15:37:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2018-10-10 15:37:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-10 15:37:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2018-10-10 15:37:58,743 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 79 [2018-10-10 15:37:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:37:58,744 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2018-10-10 15:37:58,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:37:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2018-10-10 15:37:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-10 15:37:58,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:37:58,750 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:37:58,750 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:37:58,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:37:58,751 INFO L82 PathProgramCache]: Analyzing trace with hash 467065079, now seen corresponding path program 1 times [2018-10-10 15:37:58,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:37:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:38:00,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:00,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-10 15:38:00,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-10 15:38:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-10 15:38:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:38:00,052 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand 19 states. [2018-10-10 15:38:01,066 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-10-10 15:38:01,226 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-10 15:38:01,442 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-10-10 15:38:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:01,941 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-10-10 15:38:01,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-10 15:38:01,941 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 139 [2018-10-10 15:38:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:01,945 INFO L225 Difference]: With dead ends: 237 [2018-10-10 15:38:01,945 INFO L226 Difference]: Without dead ends: 222 [2018-10-10 15:38:01,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 15:38:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-10 15:38:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 202. [2018-10-10 15:38:01,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-10 15:38:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-10-10 15:38:01,977 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 139 [2018-10-10 15:38:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:01,982 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-10-10 15:38:01,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-10 15:38:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-10-10 15:38:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-10 15:38:01,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:01,994 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:38:01,995 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:01,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:01,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1690746835, now seen corresponding path program 2 times [2018-10-10 15:38:01,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:38:03,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:03,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-10 15:38:03,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-10 15:38:03,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-10 15:38:03,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2018-10-10 15:38:03,575 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 28 states. [2018-10-10 15:38:06,793 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-10-10 15:38:07,017 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-10 15:38:07,239 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:38:07,463 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-10 15:38:07,752 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:38:07,981 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2018-10-10 15:38:08,208 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-10 15:38:08,374 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-10-10 15:38:08,569 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-10 15:38:08,909 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-10-10 15:38:09,108 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-10 15:38:09,267 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:38:09,469 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-10 15:38:09,649 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:38:09,974 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:38:10,506 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:38:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:10,539 INFO L93 Difference]: Finished difference Result 324 states and 325 transitions. [2018-10-10 15:38:10,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-10 15:38:10,540 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 201 [2018-10-10 15:38:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:10,544 INFO L225 Difference]: With dead ends: 324 [2018-10-10 15:38:10,544 INFO L226 Difference]: Without dead ends: 324 [2018-10-10 15:38:10,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2018-10-10 15:38:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-10 15:38:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 262. [2018-10-10 15:38:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-10 15:38:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2018-10-10 15:38:10,559 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 201 [2018-10-10 15:38:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:10,559 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2018-10-10 15:38:10,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-10 15:38:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2018-10-10 15:38:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-10 15:38:10,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:10,564 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:38:10,565 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:10,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:10,565 INFO L82 PathProgramCache]: Analyzing trace with hash -76669302, now seen corresponding path program 3 times [2018-10-10 15:38:10,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 30 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:38:14,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:14,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-10 15:38:14,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-10 15:38:14,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-10 15:38:14,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1940, Unknown=0, NotChecked=0, Total=2070 [2018-10-10 15:38:14,404 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 46 states. [2018-10-10 15:38:17,047 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2018-10-10 15:38:21,275 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-10-10 15:38:21,443 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-10 15:38:21,799 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2018-10-10 15:38:22,072 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2018-10-10 15:38:22,335 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-10 15:38:22,606 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2018-10-10 15:38:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:38:22,671 INFO L93 Difference]: Finished difference Result 419 states and 420 transitions. [2018-10-10 15:38:22,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-10 15:38:22,673 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 261 [2018-10-10 15:38:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:38:22,676 INFO L225 Difference]: With dead ends: 419 [2018-10-10 15:38:22,677 INFO L226 Difference]: Without dead ends: 344 [2018-10-10 15:38:22,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 4 SyntacticMatches, 13 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=702, Invalid=7670, Unknown=0, NotChecked=0, Total=8372 [2018-10-10 15:38:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-10 15:38:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 324. [2018-10-10 15:38:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-10 15:38:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 325 transitions. [2018-10-10 15:38:22,691 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 325 transitions. Word has length 261 [2018-10-10 15:38:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:38:22,692 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 325 transitions. [2018-10-10 15:38:22,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-10 15:38:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 325 transitions. [2018-10-10 15:38:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-10 15:38:22,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:38:22,698 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:38:22,698 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:38:22,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:38:22,699 INFO L82 PathProgramCache]: Analyzing trace with hash -68008384, now seen corresponding path program 4 times [2018-10-10 15:38:22,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:38:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:38:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 97 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:38:29,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:38:29,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-10 15:38:29,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-10 15:38:29,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-10 15:38:29,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=4101, Unknown=0, NotChecked=0, Total=4290 [2018-10-10 15:38:29,688 INFO L87 Difference]: Start difference. First operand 324 states and 325 transitions. Second operand 66 states. [2018-10-10 15:38:35,794 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-10 15:38:36,023 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2018-10-10 15:38:37,210 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:38:37,442 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-10-10 15:38:38,851 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-10 15:38:39,776 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-10-10 15:38:39,999 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-10-10 15:38:40,278 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-10 15:38:40,611 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:38:40,967 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-10 15:38:41,269 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2018-10-10 15:38:41,556 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-10 15:38:41,917 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2018-10-10 15:38:42,351 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-10 15:38:42,818 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2018-10-10 15:38:43,137 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2018-10-10 15:38:43,475 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2018-10-10 15:38:43,863 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2018-10-10 15:38:44,135 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2018-10-10 15:38:44,606 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2018-10-10 15:38:45,116 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2018-10-10 15:38:46,052 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 121 [2018-10-10 15:38:46,548 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2018-10-10 15:38:47,253 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2018-10-10 15:38:47,813 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 124 [2018-10-10 15:38:48,578 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 129 [2018-10-10 15:38:49,095 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 124 [2018-10-10 15:38:49,509 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2018-10-10 15:38:50,111 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2018-10-10 15:38:50,582 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2018-10-10 15:38:51,198 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 137 [2018-10-10 15:38:51,730 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2018-10-10 15:38:52,244 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 141 [2018-10-10 15:38:52,698 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 132 [2018-10-10 15:38:53,264 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 124 [2018-10-10 15:38:53,739 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 124 [2018-10-10 15:38:54,253 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 115 [2018-10-10 15:38:54,712 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 118 [2018-10-10 15:38:55,457 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 115 [2018-10-10 15:38:55,977 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2018-10-10 15:38:56,641 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2018-10-10 15:38:57,530 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 121 [2018-10-10 15:38:57,950 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2018-10-10 15:38:58,365 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2018-10-10 15:38:58,768 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2018-10-10 15:38:59,355 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2018-10-10 15:38:59,932 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-10 15:39:00,391 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2018-10-10 15:39:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:39:00,447 INFO L93 Difference]: Finished difference Result 446 states and 447 transitions. [2018-10-10 15:39:00,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-10 15:39:00,448 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 323 [2018-10-10 15:39:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:39:00,452 INFO L225 Difference]: With dead ends: 446 [2018-10-10 15:39:00,452 INFO L226 Difference]: Without dead ends: 446 [2018-10-10 15:39:00,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 12 SyntacticMatches, 17 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=3153, Invalid=19197, Unknown=0, NotChecked=0, Total=22350 [2018-10-10 15:39:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2018-10-10 15:39:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 384. [2018-10-10 15:39:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-10-10 15:39:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2018-10-10 15:39:00,468 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 323 [2018-10-10 15:39:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:39:00,469 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2018-10-10 15:39:00,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-10 15:39:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2018-10-10 15:39:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-10 15:39:00,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:39:00,476 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-10 15:39:00,477 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:39:00,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:39:00,477 INFO L82 PathProgramCache]: Analyzing trace with hash -249229795, now seen corresponding path program 5 times [2018-10-10 15:39:00,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:39:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:39:01,490 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-10 15:39:07,065 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-10-10 15:39:07,758 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2018-10-10 15:39:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 66 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:39:14,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:39:14,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-10-10 15:39:14,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-10 15:39:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-10 15:39:14,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=7756, Unknown=0, NotChecked=0, Total=8010 [2018-10-10 15:39:14,564 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand 90 states. [2018-10-10 15:39:18,688 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-10 15:39:22,953 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-10 15:39:23,955 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-10 15:39:24,748 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-10 15:39:25,020 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-10 15:39:25,305 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-10-10 15:39:25,993 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2018-10-10 15:39:26,414 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2018-10-10 15:39:26,747 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-10-10 15:39:27,213 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2018-10-10 15:39:27,737 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 88 [2018-10-10 15:39:28,466 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-10 15:39:28,891 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:39:29,593 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2018-10-10 15:39:29,867 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2018-10-10 15:39:30,167 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-10 15:39:30,429 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-10 15:39:30,910 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-10-10 15:39:31,425 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-10-10 15:39:32,137 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2018-10-10 15:39:32,907 WARN L178 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 114 [2018-10-10 15:39:33,411 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-10-10 15:39:33,791 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2018-10-10 15:39:34,200 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:39:34,661 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 109 [2018-10-10 15:39:35,242 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2018-10-10 15:39:35,812 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 134 [2018-10-10 15:39:36,229 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-10-10 15:39:36,658 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-10-10 15:39:37,107 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-10-10 15:39:37,692 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-10-10 15:39:38,584 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2018-10-10 15:39:40,414 WARN L178 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 189 [2018-10-10 15:39:41,297 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 168 [2018-10-10 15:39:41,982 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 171 [2018-10-10 15:39:43,301 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 174 [2018-10-10 15:39:44,162 WARN L178 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 170 [2018-10-10 15:39:45,081 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2018-10-10 15:39:45,729 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2018-10-10 15:39:46,775 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-10-10 15:39:47,650 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 220 [2018-10-10 15:39:48,331 WARN L178 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 199 [2018-10-10 15:39:49,040 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 180 [2018-10-10 15:39:49,724 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-10-10 15:39:50,398 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2018-10-10 15:39:51,122 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 177 [2018-10-10 15:39:52,706 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 174 [2018-10-10 15:39:53,691 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2018-10-10 15:39:54,641 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-10-10 15:39:56,052 WARN L178 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 191 [2018-10-10 15:39:56,540 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2018-10-10 15:39:56,919 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-10-10 15:39:57,550 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 174 [2018-10-10 15:39:58,362 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 158 [2018-10-10 15:39:58,981 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 164 [2018-10-10 15:39:59,665 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 170 [2018-10-10 15:40:00,048 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-10-10 15:40:00,720 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-10-10 15:40:01,400 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-10-10 15:40:01,817 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-10-10 15:40:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:40:01,841 INFO L93 Difference]: Finished difference Result 622 states and 623 transitions. [2018-10-10 15:40:01,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-10 15:40:01,842 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 383 [2018-10-10 15:40:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:40:01,846 INFO L225 Difference]: With dead ends: 622 [2018-10-10 15:40:01,846 INFO L226 Difference]: Without dead ends: 466 [2018-10-10 15:40:01,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 2 SyntacticMatches, 15 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8954 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=1553, Invalid=32487, Unknown=0, NotChecked=0, Total=34040 [2018-10-10 15:40:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-10-10 15:40:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 446. [2018-10-10 15:40:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-10-10 15:40:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2018-10-10 15:40:01,860 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 383 [2018-10-10 15:40:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:40:01,861 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2018-10-10 15:40:01,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-10 15:40:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2018-10-10 15:40:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-10-10 15:40:01,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:40:01,870 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-10 15:40:01,870 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:40:01,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:40:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1522357843, now seen corresponding path program 6 times [2018-10-10 15:40:01,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:40:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:40:07,717 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-10 15:40:08,303 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2018-10-10 15:40:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 108 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:40:17,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:40:17,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-10-10 15:40:17,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-10 15:40:17,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-10 15:40:17,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=10814, Unknown=0, NotChecked=0, Total=11130 [2018-10-10 15:40:17,213 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand 106 states. [2018-10-10 15:40:26,496 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-10 15:40:26,817 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2018-10-10 15:40:27,060 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 15:40:28,755 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-10 15:40:29,052 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-10 15:40:30,656 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-10 15:40:32,213 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-10-10 15:40:32,588 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-10 15:40:32,962 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-10 15:40:33,537 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-10-10 15:40:33,925 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-10-10 15:40:34,283 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-10 15:40:34,705 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2018-10-10 15:40:35,370 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:40:35,941 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-10 15:40:36,394 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2018-10-10 15:40:36,886 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2018-10-10 15:40:37,286 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 91 [2018-10-10 15:40:37,962 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-10 15:40:38,228 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2018-10-10 15:40:38,705 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:40:39,095 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2018-10-10 15:40:39,598 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2018-10-10 15:40:40,204 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2018-10-10 15:40:40,897 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2018-10-10 15:40:41,447 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2018-10-10 15:40:42,050 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2018-10-10 15:40:43,017 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2018-10-10 15:40:43,482 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-10 15:40:44,201 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2018-10-10 15:40:44,645 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2018-10-10 15:40:45,577 WARN L178 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 108 [2018-10-10 15:40:46,464 WARN L178 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 126 [2018-10-10 15:40:47,289 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-10-10 15:40:48,090 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 136 [2018-10-10 15:40:48,670 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 109 [2018-10-10 15:40:49,421 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 147 [2018-10-10 15:40:50,281 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2018-10-10 15:40:51,258 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 171 [2018-10-10 15:40:51,970 WARN L178 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 151 [2018-10-10 15:40:52,731 WARN L178 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 159 [2018-10-10 15:40:53,657 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 183 [2018-10-10 15:40:54,346 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 154 [2018-10-10 15:40:55,467 WARN L178 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 215 [2018-10-10 15:40:56,710 WARN L178 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 218 [2018-10-10 15:40:58,873 WARN L178 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 229 [2018-10-10 15:41:00,043 WARN L178 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 231 [2018-10-10 15:41:01,598 WARN L178 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 242 [2018-10-10 15:41:02,960 WARN L178 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 240 [2018-10-10 15:41:04,733 WARN L178 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 253 [2018-10-10 15:41:06,090 WARN L178 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 248 [2018-10-10 15:41:07,348 WARN L178 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 228 [2018-10-10 15:41:08,695 WARN L178 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 224 [2018-10-10 15:41:09,841 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 220 [2018-10-10 15:41:11,078 WARN L178 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 242 [2018-10-10 15:41:12,365 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 244 [2018-10-10 15:41:14,036 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 308 DAG size of output: 267 [2018-10-10 15:41:15,554 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 331 DAG size of output: 290 [2018-10-10 15:41:16,976 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 314 DAG size of output: 281 [2018-10-10 15:41:18,178 WARN L178 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 258 [2018-10-10 15:41:19,382 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 235 [2018-10-10 15:41:20,563 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2018-10-10 15:41:21,870 WARN L178 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 215 [2018-10-10 15:41:22,977 WARN L178 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 219 [2018-10-10 15:41:24,100 WARN L178 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 219 [2018-10-10 15:41:25,952 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 218 [2018-10-10 15:41:27,336 WARN L178 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 216 [2018-10-10 15:41:28,442 WARN L178 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 219 [2018-10-10 15:41:30,220 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 222 [2018-10-10 15:41:31,386 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 217 [2018-10-10 15:41:32,412 WARN L178 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 209 [2018-10-10 15:41:33,841 WARN L178 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 211 [2018-10-10 15:41:35,350 WARN L178 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 228 [2018-10-10 15:41:36,641 WARN L178 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 243 [2018-10-10 15:41:37,862 WARN L178 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 249 [2018-10-10 15:41:38,907 WARN L178 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 234 [2018-10-10 15:41:40,011 WARN L178 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 223 [2018-10-10 15:41:41,077 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 219 [2018-10-10 15:41:42,296 WARN L178 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 204 [2018-10-10 15:41:43,460 WARN L178 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 201 [2018-10-10 15:41:44,851 WARN L178 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 208 [2018-10-10 15:41:45,822 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 210 [2018-10-10 15:41:47,113 WARN L178 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 216 [2018-10-10 15:41:48,223 WARN L178 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 222 [2018-10-10 15:41:49,122 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 194 [2018-10-10 15:41:50,032 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 191 [2018-10-10 15:41:51,825 WARN L178 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 199 [2018-10-10 15:41:52,869 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 201 [2018-10-10 15:41:54,094 WARN L178 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 204 [2018-10-10 15:41:55,104 WARN L178 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 207 [2018-10-10 15:41:56,031 WARN L178 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 200 [2018-10-10 15:41:56,882 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 197 [2018-10-10 15:41:57,867 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 192 [2018-10-10 15:41:59,031 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 189 [2018-10-10 15:42:00,072 WARN L178 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 186 [2018-10-10 15:42:01,121 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 186 [2018-10-10 15:42:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:42:01,229 INFO L93 Difference]: Finished difference Result 568 states and 569 transitions. [2018-10-10 15:42:01,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-10 15:42:01,230 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 445 [2018-10-10 15:42:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:42:01,233 INFO L225 Difference]: With dead ends: 568 [2018-10-10 15:42:01,233 INFO L226 Difference]: Without dead ends: 568 [2018-10-10 15:42:01,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 16 SyntacticMatches, 14 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13834 ImplicationChecksByTransitivity, 91.1s TimeCoverageRelationStatistics Valid=6633, Invalid=50727, Unknown=0, NotChecked=0, Total=57360 [2018-10-10 15:42:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-10-10 15:42:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 506. [2018-10-10 15:42:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2018-10-10 15:42:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2018-10-10 15:42:01,247 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 445 [2018-10-10 15:42:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:42:01,247 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2018-10-10 15:42:01,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-10 15:42:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2018-10-10 15:42:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-10-10 15:42:01,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:42:01,251 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-10 15:42:01,251 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:42:01,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:42:01,252 INFO L82 PathProgramCache]: Analyzing trace with hash -969734224, now seen corresponding path program 7 times [2018-10-10 15:42:01,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:42:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:42:03,299 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-10 15:42:03,553 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:42:03,812 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:42:04,113 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:42:04,415 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:42:04,752 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-10 15:42:07,492 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2018-10-10 15:42:07,759 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-10 15:42:08,512 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2018-10-10 15:42:10,849 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-10-10 15:42:11,113 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-10 15:42:11,392 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-10 15:42:11,664 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-10 15:42:11,956 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:42:12,241 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-10 15:42:12,559 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:42:12,992 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:42:13,323 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:42:13,840 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:42:14,224 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-10 15:42:14,596 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-10 15:42:14,975 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-10 15:42:15,429 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-10 15:42:15,794 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-10-10 15:42:16,138 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-10 15:42:16,495 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2018-10-10 15:42:16,865 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:42:17,439 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-10 15:42:17,857 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-10 15:42:18,303 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-10 15:42:18,647 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2018-10-10 15:42:19,975 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-10 15:42:20,691 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-10-10 15:42:21,109 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:42:21,490 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:42:21,872 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:42:22,246 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-10 15:42:22,976 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-10 15:42:27,785 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-10 15:42:28,253 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2018-10-10 15:42:28,696 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-10 15:42:29,090 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-10 15:42:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:42:40,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:42:40,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-10-10 15:42:40,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-10 15:42:40,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-10 15:42:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=19069, Unknown=0, NotChecked=0, Total=19460 [2018-10-10 15:42:40,158 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand 140 states. [2018-10-10 15:42:47,072 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-10 15:42:47,779 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:42:56,559 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:42:57,026 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:42:57,509 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2018-10-10 15:42:59,009 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-10-10 15:42:59,400 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-10-10 15:43:00,009 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-10 15:43:00,545 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:43:01,815 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:43:02,916 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:43:03,880 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2018-10-10 15:43:04,313 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2018-10-10 15:43:05,003 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2018-10-10 15:43:05,680 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 95 [2018-10-10 15:43:06,625 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:43:07,281 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2018-10-10 15:43:07,842 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-10-10 15:43:08,542 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 122 [2018-10-10 15:43:09,665 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-10-10 15:43:10,575 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2018-10-10 15:43:11,297 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2018-10-10 15:43:12,104 WARN L178 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2018-10-10 15:43:12,624 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-10 15:43:13,111 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:43:13,470 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-10-10 15:43:13,983 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-10-10 15:43:14,745 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2018-10-10 15:43:15,366 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2018-10-10 15:43:16,273 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2018-10-10 15:43:17,247 WARN L178 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 144 [2018-10-10 15:43:18,275 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-10-10 15:43:19,105 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2018-10-10 15:43:20,118 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 106 [2018-10-10 15:43:21,690 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 113 [2018-10-10 15:43:22,231 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:43:22,744 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2018-10-10 15:43:23,236 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:43:24,167 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2018-10-10 15:43:25,018 WARN L178 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 91 [2018-10-10 15:43:26,228 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 136 [2018-10-10 15:43:27,691 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 194 DAG size of output: 163 [2018-10-10 15:43:28,812 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-10-10 15:43:30,005 WARN L178 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155 [2018-10-10 15:43:31,091 WARN L178 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2018-10-10 15:43:32,505 WARN L178 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2018-10-10 15:43:34,029 WARN L178 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2018-10-10 15:43:35,834 WARN L178 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 255 DAG size of output: 253 [2018-10-10 15:43:36,560 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-10-10 15:43:37,722 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2018-10-10 15:43:38,964 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2018-10-10 15:43:40,509 WARN L178 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2018-10-10 15:43:41,778 WARN L178 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2018-10-10 15:43:43,810 WARN L178 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2018-10-10 15:43:44,366 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-10 15:43:46,422 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2018-10-10 15:43:49,627 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 353 DAG size of output: 352 [2018-10-10 15:43:51,722 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 357 DAG size of output: 356 [2018-10-10 15:43:53,923 WARN L178 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 315 DAG size of output: 314 [2018-10-10 15:43:56,007 WARN L178 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2018-10-10 15:43:58,195 WARN L178 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 329 DAG size of output: 328 [2018-10-10 15:44:01,296 WARN L178 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 347 DAG size of output: 346 [2018-10-10 15:44:03,520 WARN L178 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 335 DAG size of output: 334 [2018-10-10 15:44:05,786 WARN L178 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 339 DAG size of output: 338 [2018-10-10 15:44:08,152 WARN L178 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2018-10-10 15:44:10,067 WARN L178 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 311 DAG size of output: 310 [2018-10-10 15:44:12,614 WARN L178 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 424 [2018-10-10 15:44:14,069 WARN L178 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2018-10-10 15:44:15,215 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2018-10-10 15:44:17,013 WARN L178 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 369 DAG size of output: 324 [2018-10-10 15:44:18,932 WARN L178 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 417 DAG size of output: 329 [2018-10-10 15:44:20,996 WARN L178 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 366 DAG size of output: 287 [2018-10-10 15:44:22,727 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 377 DAG size of output: 289 [2018-10-10 15:44:24,980 WARN L178 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 382 DAG size of output: 301 [2018-10-10 15:44:28,813 WARN L178 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 341 DAG size of output: 321 [2018-10-10 15:44:31,753 WARN L178 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 328 DAG size of output: 319 [2018-10-10 15:44:33,616 WARN L178 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 337 DAG size of output: 328 [2018-10-10 15:44:36,773 WARN L178 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 346 DAG size of output: 336 [2018-10-10 15:44:38,684 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 340 DAG size of output: 330 [2018-10-10 15:44:40,553 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 342 DAG size of output: 332 [2018-10-10 15:44:42,737 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 333 DAG size of output: 324 [2018-10-10 15:44:44,654 WARN L178 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 341 DAG size of output: 331 [2018-10-10 15:44:46,700 WARN L178 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 349 DAG size of output: 338 [2018-10-10 15:44:48,390 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 316 DAG size of output: 310 [2018-10-10 15:44:50,261 WARN L178 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 378 DAG size of output: 316 [2018-10-10 15:44:53,598 WARN L178 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 420 DAG size of output: 347 [2018-10-10 15:44:56,489 WARN L178 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 451 DAG size of output: 378 [2018-10-10 15:44:57,844 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2018-10-10 15:44:58,888 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2018-10-10 15:45:00,549 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 330 DAG size of output: 305 [2018-10-10 15:45:02,342 WARN L178 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 353 DAG size of output: 308 [2018-10-10 15:45:04,165 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 275 [2018-10-10 15:45:05,748 WARN L178 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 278 [2018-10-10 15:45:07,492 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 332 DAG size of output: 282 [2018-10-10 15:45:09,412 WARN L178 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 277 [2018-10-10 15:45:12,574 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 311 DAG size of output: 289 [2018-10-10 15:45:14,195 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 313 DAG size of output: 291 [2018-10-10 15:45:16,105 WARN L178 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 280 [2018-10-10 15:45:17,844 WARN L178 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 306 DAG size of output: 286 [2018-10-10 15:45:19,567 WARN L178 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 312 DAG size of output: 292 [2018-10-10 15:45:21,013 WARN L178 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 271 [2018-10-10 15:45:22,546 WARN L178 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 268 [2018-10-10 15:45:25,827 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 325 DAG size of output: 296 [2018-10-10 15:45:27,564 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 327 DAG size of output: 295 [2018-10-10 15:45:29,911 WARN L178 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 359 DAG size of output: 316 [2018-10-10 15:45:31,937 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 379 DAG size of output: 336 [2018-10-10 15:45:33,129 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2018-10-10 15:45:34,098 WARN L178 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2018-10-10 15:45:35,666 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 286 [2018-10-10 15:45:37,225 WARN L178 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 288 [2018-10-10 15:45:39,057 WARN L178 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 268 [2018-10-10 15:45:40,545 WARN L178 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 274 [2018-10-10 15:45:42,099 WARN L178 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 281 [2018-10-10 15:45:43,524 WARN L178 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 253 [2018-10-10 15:45:45,048 WARN L178 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 250 [2018-10-10 15:45:47,310 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 266 [2018-10-10 15:45:48,829 WARN L178 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 268 [2018-10-10 15:45:50,919 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 274 [2018-10-10 15:45:52,608 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 289 DAG size of output: 280 [2018-10-10 15:45:54,108 WARN L178 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 248 [2018-10-10 15:45:55,538 WARN L178 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 245 [2018-10-10 15:45:57,170 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-10-10 15:45:58,205 WARN L178 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-10-10 15:45:59,826 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-10-10 15:46:00,811 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2018-10-10 15:46:02,277 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-10-10 15:46:03,350 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-10-10 15:46:04,323 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2018-10-10 15:46:05,136 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-10-10 15:46:06,087 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-10-10 15:46:07,601 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-10-10 15:46:08,732 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-10 15:46:09,929 WARN L178 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-10-10 15:46:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:46:10,044 INFO L93 Difference]: Finished difference Result 955 states and 957 transitions. [2018-10-10 15:46:10,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-10 15:46:10,045 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 505 [2018-10-10 15:46:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:46:10,049 INFO L225 Difference]: With dead ends: 955 [2018-10-10 15:46:10,049 INFO L226 Difference]: Without dead ends: 955 [2018-10-10 15:46:10,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23679 ImplicationChecksByTransitivity, 188.6s TimeCoverageRelationStatistics Valid=3011, Invalid=90319, Unknown=0, NotChecked=0, Total=93330 [2018-10-10 15:46:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2018-10-10 15:46:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 634. [2018-10-10 15:46:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2018-10-10 15:46:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 636 transitions. [2018-10-10 15:46:10,067 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 636 transitions. Word has length 505 [2018-10-10 15:46:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:46:10,067 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 636 transitions. [2018-10-10 15:46:10,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-10 15:46:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 636 transitions. [2018-10-10 15:46:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-10 15:46:10,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:46:10,072 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-10 15:46:10,072 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:46:10,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:46:10,072 INFO L82 PathProgramCache]: Analyzing trace with hash 484214669, now seen corresponding path program 8 times [2018-10-10 15:46:10,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:46:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:46:11,752 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-10 15:46:12,289 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-10 15:46:15,683 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-10-10 15:46:15,874 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-10-10 15:46:16,098 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 15:46:16,321 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 15:46:16,564 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-10-10 15:46:16,932 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 15:46:17,179 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-10 15:46:17,547 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-10 15:46:17,776 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-10-10 15:46:18,049 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-10-10 15:46:18,272 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-10-10 15:46:18,518 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-10-10 15:46:18,998 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-10 15:46:19,299 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-10 15:46:19,574 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-10 15:46:19,854 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:46:20,146 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:46:20,450 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:46:20,849 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-10 15:46:21,170 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-10 15:46:21,517 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:46:22,049 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-10 15:46:22,391 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-10 15:46:22,710 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-10 15:46:23,054 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-10-10 15:46:23,448 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2018-10-10 15:46:23,881 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:46:24,513 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:46:24,982 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2018-10-10 15:46:25,404 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:46:25,826 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:46:26,328 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-10 15:46:26,667 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-10 15:46:26,983 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-10 15:46:27,308 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-10-10 15:46:27,683 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-10 15:46:28,284 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-10 15:46:28,710 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-10 15:46:29,151 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-10 15:46:29,794 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-10 15:46:30,186 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-10 15:46:30,596 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-10-10 15:46:30,974 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-10 15:46:31,365 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-10-10 15:46:31,706 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-10-10 15:46:32,043 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-10-10 15:46:32,408 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-10 15:46:32,765 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-10 15:46:33,192 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2018-10-10 15:46:33,607 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-10 15:46:34,069 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-10 15:46:34,461 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 15:46:35,872 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-10 15:46:36,233 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2018-10-10 15:46:36,623 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-10 15:46:36,969 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-10 15:46:37,349 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-10-10 15:46:37,728 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-10-10 15:46:38,152 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-10-10 15:46:38,531 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-10-10 15:46:38,879 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2018-10-10 15:46:40,015 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 15:46:41,332 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-10 15:46:41,716 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-10 15:46:42,479 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-10 15:46:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 318 proven. 640 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-10 15:46:51,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:46:51,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-10-10 15:46:51,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-10 15:46:51,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-10 15:46:51,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=18527, Unknown=0, NotChecked=0, Total=18906 [2018-10-10 15:46:51,172 INFO L87 Difference]: Start difference. First operand 634 states and 636 transitions. Second operand 138 states.