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 [2018-10-04 12:51:20,008 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:51:20,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:51:20,027 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:51:20,028 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:51:20,029 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:51:20,030 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:51:20,032 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:51:20,033 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:51:20,034 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:51:20,035 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 12:51:20,080 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 12:51:20,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:51:20,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:51:20,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:51:20,109 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:51:20,110 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:51:20,110 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:51:20,111 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:51:20,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:51:20,111 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:51:20,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:51:20,111 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:51:20,112 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:51:20,113 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:51:20,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:51:20,113 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:51:20,113 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:51:20,113 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:51:20,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:51:20,114 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:51:20,114 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:51:20,114 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:51:20,114 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:51:20,115 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:51:20,115 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:51:20,115 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:51:20,115 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:51:20,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:51:20,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:51:20,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:51:20,186 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:51:20,186 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:51:20,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-10-04 12:51:20,188 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-10-04 12:51:20,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:51:20,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:51:20,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:51:20,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:51:20,249 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:51:20,269 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,282 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:51:20,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:51:20,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:51:20,290 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:51:20,302 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,302 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,303 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,304 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,306 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,308 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,309 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 12:51:20" (1/1) ... [2018-10-04 12:51:20,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:51:20,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:51:20,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:51:20,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:51:20,313 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 12:51:20" (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 12:51:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:51:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:51:20,706 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:51:20,707 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:51:20 BoogieIcfgContainer [2018-10-04 12:51:20,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:51:20,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:51:20,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:51:20,713 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:51:20,713 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 12:51:20" (1/2) ... [2018-10-04 12:51:20,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f740ec and model type nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:51:20, skipping insertion in model container [2018-10-04 12:51:20,715 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 12:51:20" (2/2) ... [2018-10-04 12:51:20,717 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.i_4.bpl [2018-10-04 12:51:20,729 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:51:20,737 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:51:20,789 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:51:20,790 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:51:20,790 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:51:20,790 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:51:20,790 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:51:20,791 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:51:20,791 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:51:20,791 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:51:20,791 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:51:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:51:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:51:20,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:20,816 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:51:20,817 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:20,824 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 12:51:20,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:20,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:20,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:20,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:20,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:21,018 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 12:51:21,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:51:21,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:51:21,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:51:21,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:51:21,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:21,042 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 12:51:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:21,116 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-04 12:51:21,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:51:21,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:51:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:21,133 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:51:21,134 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:51:21,138 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 12:51:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:51:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-04 12:51:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:51:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-04 12:51:21,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-10-04 12:51:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:21,184 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-04 12:51:21,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:51:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-04 12:51:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:51:21,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:21,185 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:51:21,185 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:21,185 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-10-04 12:51:21,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:21,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:21,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:21,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:21,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:21,303 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 12:51:21,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:51:21,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-04 12:51:21,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:51:21,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:51:21,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:21,306 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-10-04 12:51:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:21,367 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-10-04 12:51:21,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:51:21,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-04 12:51:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:21,370 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:51:21,370 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:51:21,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 12:51:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:51:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:51:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:51:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-04 12:51:21,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-04 12:51:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:21,376 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-04 12:51:21,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:51:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-04 12:51:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:51:21,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:21,377 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:51:21,378 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:21,378 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-10-04 12:51:21,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:21,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:21,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:21,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:21,475 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 12:51:21,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:21,475 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 12:51:21,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:21,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:21,854 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 12:51:21,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:21,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-04 12:51:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:51:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:51:21,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:21,877 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-10-04 12:51:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:21,988 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-04 12:51:21,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:51:21,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-04 12:51:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:21,990 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:51:21,990 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:51:21,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 4 [2018-10-04 12:51:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:51:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:51:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:51:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-04 12:51:21,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-04 12:51:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:21,996 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-04 12:51:21,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:51:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-04 12:51:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:51:21,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:21,997 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-10-04 12:51:21,999 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:21,999 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-10-04 12:51:21,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:22,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:22,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:22,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:22,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:22,185 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 12:51:22,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:22,185 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 12:51:22,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:51:22,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:51:22,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:22,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:22,396 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 12:51:22,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:22,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-10-04 12:51:22,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:51:22,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:51:22,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:22,420 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-10-04 12:51:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:23,152 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-10-04 12:51:23,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:51:23,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-10-04 12:51:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:23,156 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:51:23,157 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:51:23,157 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 12:51:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:51:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-04 12:51:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:51:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-04 12:51:23,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2018-10-04 12:51:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:23,167 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-04 12:51:23,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:51:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-04 12:51:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:51:23,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:23,168 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-10-04 12:51:23,169 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:23,169 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 3 times [2018-10-04 12:51:23,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:23,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:23,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:23,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:23,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:23,286 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 12:51:23,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:23,287 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 12:51:23,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:51:23,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 12:51:23,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:23,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:23,856 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 12:51:23,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:23,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-04 12:51:23,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:51:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:51:23,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:23,883 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-04 12:51:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:24,380 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-10-04 12:51:24,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:51:24,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-10-04 12:51:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:24,383 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:51:24,383 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:51:24,384 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 12:51:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:51:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-10-04 12:51:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:51:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-04 12:51:24,396 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2018-10-04 12:51:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:24,396 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-04 12:51:24,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:51:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-04 12:51:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:51:24,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:24,398 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-10-04 12:51:24,398 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:24,399 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 4 times [2018-10-04 12:51:24,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:24,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:24,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:24,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:24,621 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 12:51:24,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:24,622 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 12:51:24,634 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:51:24,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:51:24,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:24,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:24,806 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 12:51:24,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:24,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-04 12:51:24,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:51:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:51:24,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:24,828 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-10-04 12:51:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:24,919 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-10-04 12:51:24,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:51:24,921 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-04 12:51:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:24,922 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:51:24,922 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:51:24,923 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 12:51:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:51:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:51:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:51:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-10-04 12:51:24,941 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2018-10-04 12:51:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:24,942 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-10-04 12:51:24,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:51:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-10-04 12:51:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:51:24,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:24,944 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 4, 3, 3, 1, 1, 1] [2018-10-04 12:51:24,944 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:24,944 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash -254509681, now seen corresponding path program 5 times [2018-10-04 12:51:24,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:24,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:24,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:24,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:24,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:25,193 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 12:51:25,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:25,195 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 12:51:25,207 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:51:25,269 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-10-04 12:51:25,269 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:25,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:25,419 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 12:51:25,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:25,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-10-04 12:51:25,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:51:25,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:51:25,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:25,444 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 15 states. [2018-10-04 12:51:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:25,494 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-10-04 12:51:25,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:51:25,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-04 12:51:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:25,496 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:51:25,496 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:51:25,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 8 [2018-10-04 12:51:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:51:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:51:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:51:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-10-04 12:51:25,510 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 46 [2018-10-04 12:51:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:25,510 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-10-04 12:51:25,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:51:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-10-04 12:51:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:51:25,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:25,512 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 4, 3, 3, 1, 1, 1] [2018-10-04 12:51:25,512 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:25,512 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -996261859, now seen corresponding path program 6 times [2018-10-04 12:51:25,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:25,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:25,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:25,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:25,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:25,723 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 12:51:25,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:25,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:51:25,734 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:51:25,752 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-04 12:51:25,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:25,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:26,120 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 12:51:26,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:26,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-04 12:51:26,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:51:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:51:26,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:26,142 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2018-10-04 12:51:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:27,458 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2018-10-04 12:51:27,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:51:27,459 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2018-10-04 12:51:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:27,460 INFO L225 Difference]: With dead ends: 129 [2018-10-04 12:51:27,460 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:51:27,461 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 12:51:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:51:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-10-04 12:51:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 12:51:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-10-04 12:51:27,481 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2018-10-04 12:51:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:27,481 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-10-04 12:51:27,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:51:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-10-04 12:51:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 12:51:27,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:27,484 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 5, 4, 4, 1, 1, 1] [2018-10-04 12:51:27,485 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:27,485 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash -252111625, now seen corresponding path program 7 times [2018-10-04 12:51:27,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:27,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:27,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:27,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:27,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:27,731 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 12:51:27,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:27,731 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 12:51:27,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:27,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:28,404 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 12:51:28,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:28,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-10-04 12:51:28,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:51:28,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:51:28,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:28,426 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 19 states. [2018-10-04 12:51:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:28,546 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2018-10-04 12:51:28,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:51:28,549 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-10-04 12:51:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:28,550 INFO L225 Difference]: With dead ends: 143 [2018-10-04 12:51:28,550 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 12:51:28,551 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 12:51:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 12:51:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 12:51:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 12:51:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-10-04 12:51:28,569 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 76 [2018-10-04 12:51:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:28,569 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-10-04 12:51:28,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:51:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-10-04 12:51:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 12:51:28,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:28,571 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 5, 4, 4, 1, 1, 1] [2018-10-04 12:51:28,571 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:28,572 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:28,572 INFO L82 PathProgramCache]: Analyzing trace with hash 771511391, now seen corresponding path program 8 times [2018-10-04 12:51:28,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:28,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:28,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:28,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:28,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:29,342 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 12:51:29,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:29,343 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 12:51:29,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:51:29,417 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:51:29,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:29,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:29,578 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 12:51:29,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:29,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-04 12:51:29,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:51:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:51:29,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:29,601 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 21 states. [2018-10-04 12:51:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:29,674 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-10-04 12:51:29,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:51:29,676 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 84 [2018-10-04 12:51:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:29,677 INFO L225 Difference]: With dead ends: 157 [2018-10-04 12:51:29,677 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:51:29,678 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 12:51:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:51:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 12:51:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 12:51:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-10-04 12:51:29,695 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 84 [2018-10-04 12:51:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:29,696 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-10-04 12:51:29,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:51:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-10-04 12:51:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 12:51:29,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:29,698 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 5, 4, 4, 1, 1, 1] [2018-10-04 12:51:29,698 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:29,698 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1630563271, now seen corresponding path program 9 times [2018-10-04 12:51:29,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:29,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:29,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:29,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:29,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:29,884 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 12:51:29,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:29,884 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 12:51:29,896 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:51:29,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-04 12:51:29,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:29,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:30,341 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 12:51:30,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:30,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-10-04 12:51:30,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:51:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:51:30,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:30,364 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 23 states. [2018-10-04 12:51:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:30,606 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2018-10-04 12:51:30,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:51:30,606 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2018-10-04 12:51:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:30,607 INFO L225 Difference]: With dead ends: 171 [2018-10-04 12:51:30,607 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 12:51:30,608 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 12:51:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 12:51:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 12:51:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 12:51:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-10-04 12:51:30,646 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 92 [2018-10-04 12:51:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:30,646 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-10-04 12:51:30,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:51:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-10-04 12:51:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 12:51:30,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:30,652 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 5, 4, 4, 1, 1, 1] [2018-10-04 12:51:30,652 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:30,652 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:30,652 INFO L82 PathProgramCache]: Analyzing trace with hash -220374225, now seen corresponding path program 10 times [2018-10-04 12:51:30,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:30,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:30,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:30,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:30,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:30,908 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 12:51:30,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:30,908 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 12:51:30,916 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:51:30,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:51:30,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:30,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:31,206 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 12:51:31,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:31,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-04 12:51:31,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:51:31,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:51:31,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:31,228 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2018-10-04 12:51:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:31,335 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-04 12:51:31,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:51:31,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-10-04 12:51:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:31,337 INFO L225 Difference]: With dead ends: 149 [2018-10-04 12:51:31,337 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 12:51:31,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 7 [2018-10-04 12:51:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 12:51:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2018-10-04 12:51:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 12:51:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2018-10-04 12:51:31,357 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 100 [2018-10-04 12:51:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:31,358 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2018-10-04 12:51:31,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:51:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2018-10-04 12:51:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 12:51:31,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:31,360 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 6, 5, 5, 1, 1, 1] [2018-10-04 12:51:31,360 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:31,360 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1446024969, now seen corresponding path program 11 times [2018-10-04 12:51:31,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:31,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:31,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:31,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:31,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:31,545 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 12:51:31,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:31,545 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 12:51:31,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:51:31,638 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 12:51:31,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:31,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:32,027 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 12:51:32,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:32,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-04 12:51:32,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:51:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:51:32,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:32,049 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 14 states. [2018-10-04 12:51:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:32,128 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2018-10-04 12:51:32,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:51:32,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-10-04 12:51:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:32,130 INFO L225 Difference]: With dead ends: 173 [2018-10-04 12:51:32,130 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 12:51:32,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime 8 [2018-10-04 12:51:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 12:51:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2018-10-04 12:51:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 12:51:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2018-10-04 12:51:32,159 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 124 [2018-10-04 12:51:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:32,160 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2018-10-04 12:51:32,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:51:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2018-10-04 12:51:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 12:51:32,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:32,162 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 7, 6, 6, 1, 1, 1] [2018-10-04 12:51:32,162 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:32,162 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1667523811, now seen corresponding path program 12 times [2018-10-04 12:51:32,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:32,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:32,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:32,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:32,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:32,703 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 12:51:32,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:32,703 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 12:51:32,712 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:51:32,835 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 12:51:32,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:32,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:33,397 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 12:51:33,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:33,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-04 12:51:33,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:51:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:51:33,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:33,419 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2018-10-04 12:51:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:33,509 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2018-10-04 12:51:33,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:51:33,510 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 148 [2018-10-04 12:51:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:33,512 INFO L225 Difference]: With dead ends: 197 [2018-10-04 12:51:33,512 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 12:51:33,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 9 [2018-10-04 12:51:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 12:51:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2018-10-04 12:51:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 12:51:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2018-10-04 12:51:33,540 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 148 [2018-10-04 12:51:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:33,541 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2018-10-04 12:51:33,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:51:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2018-10-04 12:51:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 12:51:33,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:33,543 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 8, 7, 7, 1, 1, 1] [2018-10-04 12:51:33,543 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:33,543 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:33,543 INFO L82 PathProgramCache]: Analyzing trace with hash 107136189, now seen corresponding path program 13 times [2018-10-04 12:51:33,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:33,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:33,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:33,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:33,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:34,026 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 12:51:34,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:34,026 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 12:51:34,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:34,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:34,534 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 12:51:34,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:34,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-04 12:51:34,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:51:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:51:34,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:34,558 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand 18 states. [2018-10-04 12:51:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:34,700 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2018-10-04 12:51:34,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:51:34,702 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-10-04 12:51:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:34,704 INFO L225 Difference]: With dead ends: 221 [2018-10-04 12:51:34,704 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 12:51:34,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 10 [2018-10-04 12:51:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 12:51:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2018-10-04 12:51:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 12:51:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-10-04 12:51:34,745 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 172 [2018-10-04 12:51:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:34,745 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-10-04 12:51:34,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:51:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-10-04 12:51:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 12:51:34,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:34,748 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 9, 8, 8, 1, 1, 1] [2018-10-04 12:51:34,748 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:34,748 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1927956841, now seen corresponding path program 14 times [2018-10-04 12:51:34,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:34,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:34,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:34,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:51:34,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:35,546 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 12:51:35,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:35,547 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 12:51:35,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:51:35,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:51:35,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:35,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:36,148 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 12:51:36,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:36,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-04 12:51:36,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:51:36,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:51:36,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:36,170 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 20 states. [2018-10-04 12:51:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:36,316 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-10-04 12:51:36,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:51:36,317 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 196 [2018-10-04 12:51:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:36,319 INFO L225 Difference]: With dead ends: 245 [2018-10-04 12:51:36,319 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 12:51:36,319 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 12:51:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 12:51:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-10-04 12:51:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 12:51:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2018-10-04 12:51:36,366 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 196 [2018-10-04 12:51:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:36,367 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2018-10-04 12:51:36,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:51:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2018-10-04 12:51:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 12:51:36,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:36,370 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 10, 9, 9, 1, 1, 1] [2018-10-04 12:51:36,370 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:36,370 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:36,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1486407055, now seen corresponding path program 15 times [2018-10-04 12:51:36,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:36,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:36,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:36,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:36,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:36,756 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 12:51:36,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:51:36,760 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 12:51:36,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:51:36,922 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2018-10-04 12:51:36,923 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:51:36,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:51:37,439 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 12:51:37,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:51:37,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-04 12:51:37,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:51:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:51:37,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:37,461 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand 22 states. [2018-10-04 12:51:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:37,861 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2018-10-04 12:51:37,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:51:37,861 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2018-10-04 12:51:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:37,863 INFO L225 Difference]: With dead ends: 269 [2018-10-04 12:51:37,863 INFO L226 Difference]: Without dead ends: 267 [2018-10-04 12:51:37,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 12 [2018-10-04 12:51:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-04 12:51:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2018-10-04 12:51:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-04 12:51:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 255 transitions. [2018-10-04 12:51:37,929 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 255 transitions. Word has length 220 [2018-10-04 12:51:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:37,930 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 255 transitions. [2018-10-04 12:51:37,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:51:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-10-04 12:51:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-04 12:51:37,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:51:37,932 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 11, 10, 10, 1, 1, 1] [2018-10-04 12:51:37,932 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:51:37,932 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:51:37,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1732333643, now seen corresponding path program 16 times [2018-10-04 12:51:37,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:51:37,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:51:37,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:37,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:51:37,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:51:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:51:38,745 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:51:38,978 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:51:39,257 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:51:39,536 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:51:42,061 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:51:42,458 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 12:51:42,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:51:42,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-10-04 12:51:42,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 12:51:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 12:51:42,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:51:42,462 INFO L87 Difference]: Start difference. First operand 245 states and 255 transitions. Second operand 103 states. [2018-10-04 12:51:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:51:45,676 INFO L93 Difference]: Finished difference Result 10235 states and 10695 transitions. [2018-10-04 12:51:45,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 12:51:45,676 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 244 [2018-10-04 12:51:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:51:45,677 INFO L225 Difference]: With dead ends: 10235 [2018-10-04 12:51:45,677 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 12:51:45,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.4s impTime 23 [2018-10-04 12:51:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 12:51:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 12:51:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 12:51:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 12:51:45,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2018-10-04 12:51:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:51:45,731 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 12:51:45,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 12:51:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 12:51:45,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 12:51:45,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 12:51:52,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:52,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:53,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:54,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:54,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:54,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:54,736 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:54,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:55,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:55,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:55,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:56,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:56,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:56,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:56,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:56,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:57,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:57,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:58,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:58,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:59,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:59,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:59,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:51:59,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:00,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:00,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:00,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:00,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:01,685 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:02,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:02,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:03,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:03,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:04,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:05,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:05,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:07,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:09,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:10,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:10,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:10,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:13,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:14,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:14,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:15,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:16,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:18,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:20,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:22,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:24,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:28,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:28,830 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:35,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:52:58,412 WARN L178 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-04 12:53:03,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:03,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,624 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:04,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:05,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:05,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:05,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:05,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:06,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:06,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:06,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:07,152 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:07,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:07,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:07,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:07,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:08,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:08,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:08,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:09,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:09,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:10,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:11,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:12,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:13,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:13,322 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:13,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:14,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:14,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:15,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:15,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:17,579 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:19,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:19,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:20,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:20,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:22,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:24,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:24,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:24,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:25,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:28,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:29,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:32,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:34,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:38,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:38,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:53:45,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-04 12:54:08,169 WARN L178 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-04 12:54:08,963 WARN L178 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-04 12:54:09,876 WARN L178 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-04 12:55:24,180 WARN L178 SmtUtils]: Spent 1.24 m on a formula simplification. DAG size of input: 1932 DAG size of output: 362 Received shutdown request... [2018-10-04 12:55:33,582 WARN L186 SmtUtils]: Removed 1244 from assertion stack [2018-10-04 12:55:33,583 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 12:55:33,584 INFO L168 Benchmark]: Toolchain (without parser) took 253337.24 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 14.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-04 12:55:33,585 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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 12:55:33,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.37 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 12:55:33,586 INFO L168 Benchmark]: Boogie Preprocessor took 21.31 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 12:55:33,587 INFO L168 Benchmark]: RCFGBuilder took 395.80 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 12:55:33,588 INFO L168 Benchmark]: TraceAbstraction took 252874.62 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -7.0 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-04 12:55:33,592 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 0.24 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 41.37 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 21.31 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 395.80 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 252874.62 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -7.0 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_12-55-33-603.csv Completed graceful shutdown