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/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:30:06,914 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:30:06,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:30:06,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-04 14:30:06,967 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 14:30:06,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:30:06,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:30:06,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:30:06,986 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:30:06,987 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:30:06,987 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:30:06,987 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:30:06,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:30:06,988 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:30:06,988 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:30:06,988 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:30:06,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:30:06,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:30:06,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:30:06,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:30:06,989 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:30:06,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:30:06,989 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:30:06,990 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:30:06,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:30:06,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:30:06,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:30:06,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:30:06,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:30:06,991 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:30:06,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:30:06,991 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:30:06,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:30:06,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:30:06,992 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:30:06,992 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:30:07,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:30:07,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:30:07,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:30:07,067 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:30:07,067 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:30:07,068 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-10-04 14:30:07,068 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-10-04 14:30:07,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:30:07,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:30:07,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:30:07,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:30:07,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:30:07,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:30:07,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:30:07,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:30:07,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:30:07,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/1) ... [2018-10-04 14:30:07,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:30:07,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:30:07,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:30:07,189 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:30:07,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:30:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 14:30:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 14:30:07,532 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 14:30:07,533 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:30:07 BoogieIcfgContainer [2018-10-04 14:30:07,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:30:07,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:30:07,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:30:07,538 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:30:07,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:30:07" (1/2) ... [2018-10-04 14:30:07,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703462f3 and model type nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:30:07, skipping insertion in model container [2018-10-04 14:30:07,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:30:07" (2/2) ... [2018-10-04 14:30:07,541 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.i_4.bpl [2018-10-04 14:30:07,552 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:30:07,560 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:30:07,616 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:30:07,617 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:30:07,617 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:30:07,620 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:30:07,620 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:30:07,620 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:30:07,620 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:30:07,621 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:30:07,621 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:30:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 14:30:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:30:07,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:07,655 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:30:07,661 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:07,670 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 14:30:07,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:07,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:07,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:07,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:07,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:07,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:30:07,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:30:07,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:30:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:30:07,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:07,863 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 14:30:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:07,941 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-04 14:30:07,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:30:07,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 14:30:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:07,957 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:30:07,957 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:30:07,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 14:30:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:30:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-04 14:30:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:30:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-04 14:30:08,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-10-04 14:30:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:08,025 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-04 14:30:08,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:30:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-04 14:30:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:30:08,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:08,026 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-04 14:30:08,027 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:08,027 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-10-04 14:30:08,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:08,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:08,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:08,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:08,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:30:08,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-04 14:30:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:30:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:30:08,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:08,121 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-10-04 14:30:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:08,162 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-10-04 14:30:08,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:30:08,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-04 14:30:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:08,163 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:30:08,163 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:30:08,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 14:30:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:30:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:30:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:30:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-04 14:30:08,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-04 14:30:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:08,169 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-04 14:30:08,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:30:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-04 14:30:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:30:08,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:08,170 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 14:30:08,171 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:08,171 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-10-04 14:30:08,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:08,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:08,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:08,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:08,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:08,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:08,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:08,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:08,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:08,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-04 14:30:08,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:30:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:30:08,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:08,488 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-10-04 14:30:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:08,591 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-04 14:30:08,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:30:08,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-04 14:30:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:08,592 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:30:08,592 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:30:08,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 14:30:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:30:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:30:08,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:30:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-04 14:30:08,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-04 14:30:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:08,598 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-04 14:30:08,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:30:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-04 14:30:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:30:08,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:08,600 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-10-04 14:30:08,600 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:08,600 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:08,601 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-10-04 14:30:08,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:08,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:08,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:08,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:08,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:08,786 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:08,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:30:08,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:30:08,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:08,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 14:30:09,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:09,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-10-04 14:30:09,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:30:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:30:09,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:09,092 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-10-04 14:30:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:09,606 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-10-04 14:30:09,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:30:09,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-10-04 14:30:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:09,609 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:30:09,609 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:30:09,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 9 [2018-10-04 14:30:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:30:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-04 14:30:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:30:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-04 14:30:09,619 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2018-10-04 14:30:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:09,622 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-04 14:30:09,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:30:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-04 14:30:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:30:09,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:09,624 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-10-04 14:30:09,624 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:09,624 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 3 times [2018-10-04 14:30:09,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:09,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:09,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:09,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:09,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-04 14:30:09,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:09,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:09,783 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:30:09,838 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 14:30:09,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:09,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-04 14:30:10,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:10,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-04 14:30:10,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:30:10,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:30:10,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:10,376 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-04 14:30:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:10,794 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-10-04 14:30:10,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:30:10,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-10-04 14:30:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:10,797 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:30:10,797 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:30:10,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime 11 [2018-10-04 14:30:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:30:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-10-04 14:30:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:30:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-04 14:30:10,810 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2018-10-04 14:30:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:10,810 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-04 14:30:10,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:30:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-04 14:30:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:30:10,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:10,812 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-10-04 14:30:10,813 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:10,813 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:10,813 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 4 times [2018-10-04 14:30:10,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:10,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:10,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:10,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:10,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-04 14:30:11,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:11,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:11,037 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:30:11,077 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:30:11,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:11,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-04 14:30:11,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:11,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-04 14:30:11,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:30:11,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:30:11,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:11,211 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-10-04 14:30:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:11,292 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-10-04 14:30:11,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:30:11,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-04 14:30:11,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:11,299 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:30:11,299 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:30:11,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7 [2018-10-04 14:30:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:30:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:30:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:30:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-10-04 14:30:11,317 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2018-10-04 14:30:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:11,317 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-10-04 14:30:11,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:30:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-10-04 14:30:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:30:11,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:11,321 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 4, 3, 3, 1, 1, 1] [2018-10-04 14:30:11,322 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:11,322 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:11,322 INFO L82 PathProgramCache]: Analyzing trace with hash -254509681, now seen corresponding path program 5 times [2018-10-04 14:30:11,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:11,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:11,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:11,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-04 14:30:11,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:11,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:11,569 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:30:11,623 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-10-04 14:30:11,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:11,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-04 14:30:11,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:11,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-10-04 14:30:11,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:30:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:30:11,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:11,783 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 15 states. [2018-10-04 14:30:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:11,832 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-10-04 14:30:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:30:11,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-04 14:30:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:11,838 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:30:11,838 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:30:11,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 8 [2018-10-04 14:30:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:30:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:30:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:30:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-10-04 14:30:11,857 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 46 [2018-10-04 14:30:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:11,864 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-10-04 14:30:11,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:30:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-10-04 14:30:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:30:11,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:11,868 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 4, 3, 3, 1, 1, 1] [2018-10-04 14:30:11,868 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:11,869 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -996261859, now seen corresponding path program 6 times [2018-10-04 14:30:11,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:11,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:11,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:11,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 202 proven. 42 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-10-04 14:30:12,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:12,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:12,070 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:30:12,086 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-04 14:30:12,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:12,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-04 14:30:12,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:12,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-04 14:30:12,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:30:12,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:30:12,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:12,543 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2018-10-04 14:30:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:13,884 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2018-10-04 14:30:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:30:13,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2018-10-04 14:30:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:13,886 INFO L225 Difference]: With dead ends: 129 [2018-10-04 14:30:13,886 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:30:13,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime 15 [2018-10-04 14:30:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:30:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-10-04 14:30:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 14:30:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-10-04 14:30:13,908 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2018-10-04 14:30:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:13,908 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-10-04 14:30:13,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:30:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-10-04 14:30:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 14:30:13,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:13,911 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 5, 4, 4, 1, 1, 1] [2018-10-04 14:30:13,911 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:13,911 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:13,912 INFO L82 PathProgramCache]: Analyzing trace with hash -252111625, now seen corresponding path program 7 times [2018-10-04 14:30:13,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:13,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:13,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:13,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:13,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-04 14:30:14,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:14,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:14,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:14,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-04 14:30:14,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:14,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-10-04 14:30:14,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:30:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:30:14,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:14,822 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 19 states. [2018-10-04 14:30:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:14,924 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2018-10-04 14:30:14,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:30:14,926 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-10-04 14:30:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:14,927 INFO L225 Difference]: With dead ends: 143 [2018-10-04 14:30:14,927 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 14:30:14,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 10 [2018-10-04 14:30:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 14:30:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 14:30:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 14:30:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-10-04 14:30:14,947 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 76 [2018-10-04 14:30:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:14,947 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-10-04 14:30:14,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:30:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-10-04 14:30:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 14:30:14,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:14,949 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 5, 4, 4, 1, 1, 1] [2018-10-04 14:30:14,949 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:14,949 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 771511391, now seen corresponding path program 8 times [2018-10-04 14:30:14,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:14,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:14,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:14,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:14,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-04 14:30:15,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:15,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:15,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:30:15,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:30:15,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:15,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-04 14:30:15,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:16,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-04 14:30:16,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:30:16,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:30:16,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:16,001 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 21 states. [2018-10-04 14:30:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:16,084 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-10-04 14:30:16,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:30:16,089 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 84 [2018-10-04 14:30:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:16,090 INFO L225 Difference]: With dead ends: 157 [2018-10-04 14:30:16,090 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:30:16,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 11 [2018-10-04 14:30:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:30:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 14:30:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 14:30:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-10-04 14:30:16,110 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 84 [2018-10-04 14:30:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:16,110 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-10-04 14:30:16,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:30:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-10-04 14:30:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 14:30:16,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:16,112 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 5, 4, 4, 1, 1, 1] [2018-10-04 14:30:16,112 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:16,113 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:16,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1630563271, now seen corresponding path program 9 times [2018-10-04 14:30:16,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:16,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:16,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:16,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:16,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-04 14:30:16,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:16,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:16,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:30:16,388 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-04 14:30:16,388 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:16,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-04 14:30:16,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:16,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-10-04 14:30:16,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:30:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:30:16,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:16,846 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 23 states. [2018-10-04 14:30:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:17,094 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2018-10-04 14:30:17,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:30:17,094 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2018-10-04 14:30:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:17,095 INFO L225 Difference]: With dead ends: 171 [2018-10-04 14:30:17,095 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 14:30:17,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 12 [2018-10-04 14:30:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 14:30:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 14:30:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 14:30:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-10-04 14:30:17,115 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 92 [2018-10-04 14:30:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:17,115 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-10-04 14:30:17,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:30:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-10-04 14:30:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 14:30:17,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:17,117 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 5, 4, 4, 1, 1, 1] [2018-10-04 14:30:17,118 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:17,118 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash -220374225, now seen corresponding path program 10 times [2018-10-04 14:30:17,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:17,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:17,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:17,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:17,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-04 14:30:17,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:17,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:17,301 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:30:17,347 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:30:17,347 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:17,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-04 14:30:17,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:17,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-04 14:30:17,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:30:17,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:30:17,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:17,615 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2018-10-04 14:30:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:17,750 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-04 14:30:17,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:30:17,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-10-04 14:30:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:17,752 INFO L225 Difference]: With dead ends: 149 [2018-10-04 14:30:17,752 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 14:30:17,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7 [2018-10-04 14:30:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 14:30:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2018-10-04 14:30:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 14:30:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2018-10-04 14:30:17,777 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 100 [2018-10-04 14:30:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:17,778 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2018-10-04 14:30:17,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:30:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2018-10-04 14:30:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 14:30:17,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:17,780 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 6, 5, 5, 1, 1, 1] [2018-10-04 14:30:17,780 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:17,780 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1446024969, now seen corresponding path program 11 times [2018-10-04 14:30:17,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:17,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:17,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:17,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:17,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-04 14:30:18,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:18,188 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:18,197 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:30:18,283 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 14:30:18,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:18,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-04 14:30:18,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:18,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-04 14:30:18,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:30:18,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:30:18,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:18,687 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 14 states. [2018-10-04 14:30:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:18,758 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2018-10-04 14:30:18,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:30:18,759 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-10-04 14:30:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:18,760 INFO L225 Difference]: With dead ends: 173 [2018-10-04 14:30:18,761 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 14:30:18,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 8 [2018-10-04 14:30:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 14:30:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2018-10-04 14:30:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 14:30:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2018-10-04 14:30:18,789 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 124 [2018-10-04 14:30:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:18,789 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2018-10-04 14:30:18,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:30:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2018-10-04 14:30:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 14:30:18,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:18,792 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 7, 6, 6, 1, 1, 1] [2018-10-04 14:30:18,792 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:18,792 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1667523811, now seen corresponding path program 12 times [2018-10-04 14:30:18,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:18,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:18,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:18,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:18,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-04 14:30:19,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:19,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:19,065 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:30:19,179 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 14:30:19,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:19,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-04 14:30:19,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:19,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-04 14:30:19,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:30:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:30:19,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:19,722 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2018-10-04 14:30:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:19,848 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2018-10-04 14:30:19,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:30:19,848 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 148 [2018-10-04 14:30:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:19,850 INFO L225 Difference]: With dead ends: 197 [2018-10-04 14:30:19,850 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 14:30:19,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 9 [2018-10-04 14:30:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 14:30:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2018-10-04 14:30:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 14:30:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2018-10-04 14:30:19,876 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 148 [2018-10-04 14:30:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:19,876 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2018-10-04 14:30:19,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:30:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2018-10-04 14:30:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 14:30:19,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:19,879 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 8, 7, 7, 1, 1, 1] [2018-10-04 14:30:19,879 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:19,879 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:19,879 INFO L82 PathProgramCache]: Analyzing trace with hash 107136189, now seen corresponding path program 13 times [2018-10-04 14:30:19,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:19,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:19,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:19,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:19,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-04 14:30:20,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:20,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:20,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:20,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-04 14:30:20,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:20,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-04 14:30:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:30:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:30:20,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:20,694 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand 18 states. [2018-10-04 14:30:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:20,839 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2018-10-04 14:30:20,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:30:20,840 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-10-04 14:30:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:20,842 INFO L225 Difference]: With dead ends: 221 [2018-10-04 14:30:20,842 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 14:30:20,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 10 [2018-10-04 14:30:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 14:30:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2018-10-04 14:30:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 14:30:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-10-04 14:30:20,886 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 172 [2018-10-04 14:30:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:20,886 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-10-04 14:30:20,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:30:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-10-04 14:30:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 14:30:20,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:20,890 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 9, 8, 8, 1, 1, 1] [2018-10-04 14:30:20,890 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:20,891 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:20,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1927956841, now seen corresponding path program 14 times [2018-10-04 14:30:20,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:20,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:20,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:20,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:20,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-04 14:30:21,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:21,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:21,754 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:30:21,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:30:21,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:21,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-04 14:30:22,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:22,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-04 14:30:22,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:30:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:30:22,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:22,340 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 20 states. [2018-10-04 14:30:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:22,489 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-10-04 14:30:22,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:30:22,490 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 196 [2018-10-04 14:30:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:22,492 INFO L225 Difference]: With dead ends: 245 [2018-10-04 14:30:22,492 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 14:30:22,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 11 [2018-10-04 14:30:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 14:30:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-10-04 14:30:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 14:30:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2018-10-04 14:30:22,539 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 196 [2018-10-04 14:30:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:22,540 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2018-10-04 14:30:22,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:30:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2018-10-04 14:30:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 14:30:22,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:22,543 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 10, 9, 9, 1, 1, 1] [2018-10-04 14:30:22,543 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:22,543 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1486407055, now seen corresponding path program 15 times [2018-10-04 14:30:22,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:22,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:22,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:22,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:22,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-04 14:30:22,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:30:22,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:30:22,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:30:23,016 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2018-10-04 14:30:23,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:23,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-04 14:30:23,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:30:23,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-04 14:30:23,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:30:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:30:23,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:23,751 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand 22 states. [2018-10-04 14:30:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:24,141 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2018-10-04 14:30:24,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:30:24,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2018-10-04 14:30:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:24,144 INFO L225 Difference]: With dead ends: 269 [2018-10-04 14:30:24,144 INFO L226 Difference]: Without dead ends: 267 [2018-10-04 14:30:24,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime 12 [2018-10-04 14:30:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-04 14:30:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2018-10-04 14:30:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-04 14:30:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 255 transitions. [2018-10-04 14:30:24,213 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 255 transitions. Word has length 220 [2018-10-04 14:30:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:24,213 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 255 transitions. [2018-10-04 14:30:24,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:30:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-10-04 14:30:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-04 14:30:24,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:24,216 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 11, 10, 10, 1, 1, 1] [2018-10-04 14:30:24,216 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:24,216 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:24,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1732333643, now seen corresponding path program 16 times [2018-10-04 14:30:24,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:24,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:24,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:24,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:24,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 12082 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 14:30:28,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:30:28,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-10-04 14:30:28,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 14:30:28,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 14:30:28,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:28,730 INFO L87 Difference]: Start difference. First operand 245 states and 255 transitions. Second operand 103 states. [2018-10-04 14:30:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:31,701 INFO L93 Difference]: Finished difference Result 10235 states and 10695 transitions. [2018-10-04 14:30:31,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 14:30:31,702 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 244 [2018-10-04 14:30:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:31,702 INFO L225 Difference]: With dead ends: 10235 [2018-10-04 14:30:31,702 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 14:30:31,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.6s impTime 101 [2018-10-04 14:30:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 14:30:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 14:30:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 14:30:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 14:30:31,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2018-10-04 14:30:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:31,717 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 14:30:31,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 14:30:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 14:30:31,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 14:30:31,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 14:30:38,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,734 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:38,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,407 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:39,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:40,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:40,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:40,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:41,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:41,194 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:41,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:41,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:41,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:42,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:42,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:43,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:43,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:43,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:43,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:44,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:44,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:44,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:44,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:45,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:45,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:45,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:46,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:46,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:46,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:46,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:47,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:48,112 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:49,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:49,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:49,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:50,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:51,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:51,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:52,038 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:54,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:56,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:56,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:57,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:30:57,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:00,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:01,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:02,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:02,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:03,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:06,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:08,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:11,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:14,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:18,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:18,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:27,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:53,269 WARN L178 SmtUtils]: Spent 1.36 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-04 14:31:58,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:58,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:58,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:58,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:31:59,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:00,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:00,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:00,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:00,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:00,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:01,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:01,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:01,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:01,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:02,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:02,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:02,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:03,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:03,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:03,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:03,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:04,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:04,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:04,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:05,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:05,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:05,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:06,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:06,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:06,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:06,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:07,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:08,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:08,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:09,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:09,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:09,788 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:10,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:11,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:11,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:12,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:14,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:16,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:16,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:17,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:17,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:20,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:22,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:22,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:23,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:24,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:26,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:28,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:31,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:34,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:38,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:39,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:32:47,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 14:33:10,181 WARN L178 SmtUtils]: Spent 1.28 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-04 14:33:10,995 WARN L178 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-04 14:33:11,815 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 Received shutdown request... [2018-10-04 14:34:23,966 WARN L186 SmtUtils]: Removed 16 from assertion stack [2018-10-04 14:34:23,967 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-04 14:34:23,968 INFO L168 Benchmark]: Toolchain (without parser) took 256843.17 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -711.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-04 14:34:23,969 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:34:23,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:34:23,970 INFO L168 Benchmark]: Boogie Preprocessor took 20.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:34:23,971 INFO L168 Benchmark]: RCFGBuilder took 345.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 14:34:23,972 INFO L168 Benchmark]: TraceAbstraction took 256432.94 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -732.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-04 14:34:23,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 345.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256432.94 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -732.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1932. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-34-23-988.csv Completed graceful shutdown