java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1.BV.c.cil.c_21.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 09:34:58,744 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 09:34:58,746 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 09:34:58,763 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 09:34:58,763 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 09:34:58,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 09:34:58,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 09:34:58,769 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 09:34:58,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 09:34:58,772 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 09:34:58,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 09:34:58,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 09:34:58,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 09:34:58,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 09:34:58,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 09:34:58,787 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 09:34:58,788 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 09:34:58,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 09:34:58,797 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 09:34:58,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 09:34:58,802 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 09:34:58,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 09:34:58,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 09:34:58,806 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 09:34:58,806 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 09:34:58,807 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 09:34:58,808 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 09:34:58,809 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 09:34:58,809 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 09:34:58,810 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 09:34:58,811 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 09:34:58,811 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 09:34:58,812 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 09:34:58,812 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 09:34:58,813 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 09:34:58,813 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 09:34:58,814 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf [2018-07-25 09:34:58,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 09:34:58,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 09:34:58,823 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 09:34:58,823 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 09:34:58,823 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 09:34:58,823 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 09:34:58,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 09:34:58,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 09:34:58,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 09:34:58,905 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 09:34:58,906 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 09:34:58,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1.BV.c.cil.c_21.bpl [2018-07-25 09:34:58,906 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1.BV.c.cil.c_21.bpl' [2018-07-25 09:34:59,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 09:34:59,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 09:34:59,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 09:34:59,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 09:34:59,003 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 09:34:59,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 09:34:59,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 09:34:59,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 09:34:59,062 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 09:34:59,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... [2018-07-25 09:34:59,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 09:34:59,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 09:34:59,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 09:34:59,127 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 09:34:59,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-07-25 09:34:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 09:34:59,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 09:34:59,970 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 09:34:59,970 INFO L202 PluginConnector]: Adding new model s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:34:59 BoogieIcfgContainer [2018-07-25 09:34:59,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 09:34:59,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 09:34:59,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 09:34:59,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 09:34:59,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:34:58" (1/2) ... [2018-07-25 09:34:59,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e7650d and model type s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 09:34:59, skipping insertion in model container [2018-07-25 09:34:59,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:34:59" (2/2) ... [2018-07-25 09:34:59,979 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.BV.c.cil.c_21.bpl [2018-07-25 09:34:59,989 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 09:34:59,998 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 09:35:00,046 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 09:35:00,047 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 09:35:00,047 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 09:35:00,047 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 09:35:00,047 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 09:35:00,047 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 09:35:00,048 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 09:35:00,048 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 09:35:00,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 09:35:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-25 09:35:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 09:35:00,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:00,074 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:00,076 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:00,081 INFO L82 PathProgramCache]: Analyzing trace with hash -505433777, now seen corresponding path program 1 times [2018-07-25 09:35:00,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:00,522 WARN L169 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-07-25 09:35:01,362 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:01,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 09:35:01,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 09:35:01,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 09:35:01,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:01,379 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-07-25 09:35:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:01,787 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2018-07-25 09:35:01,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 09:35:01,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-25 09:35:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:01,806 INFO L225 Difference]: With dead ends: 47 [2018-07-25 09:35:01,807 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 09:35:01,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 839 SyntacticMatches, 11 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 09:35:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 09:35:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:01,860 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 15 [2018-07-25 09:35:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:01,861 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:01,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 09:35:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 09:35:01,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:01,863 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:01,863 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 540887753, now seen corresponding path program 1 times [2018-07-25 09:35:01,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:04,138 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:04,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:04,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:04,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:04,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:04,141 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:04,526 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2018-07-25 09:35:04,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 09:35:04,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-07-25 09:35:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:04,530 INFO L225 Difference]: With dead ends: 60 [2018-07-25 09:35:04,530 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 09:35:04,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3162 GetRequests, 3135 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 09:35:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-07-25 09:35:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:04,543 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 35 [2018-07-25 09:35:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:04,544 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:04,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 09:35:04,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:04,546 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:04,546 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:04,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1868096046, now seen corresponding path program 1 times [2018-07-25 09:35:04,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:06,360 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-25 09:35:09,623 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:09,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:09,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:09,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:09,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-25 09:35:09,625 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:09,821 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-07-25 09:35:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:10,479 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2018-07-25 09:35:10,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 09:35:10,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 09:35:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:10,483 INFO L225 Difference]: With dead ends: 98 [2018-07-25 09:35:10,484 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 09:35:10,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14493 GetRequests, 14446 SyntacticMatches, 32 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-25 09:35:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 09:35:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2018-07-25 09:35:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 09:35:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 159 transitions. [2018-07-25 09:35:10,514 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 159 transitions. Word has length 40 [2018-07-25 09:35:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:10,514 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 159 transitions. [2018-07-25 09:35:10,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2018-07-25 09:35:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 09:35:10,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:10,517 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:10,517 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2049536668, now seen corresponding path program 1 times [2018-07-25 09:35:10,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:13,466 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:35:14,924 WARN L169 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:35:16,518 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:35:19,322 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:35:20,594 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:35:28,138 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:35:30,733 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:30,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:30,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:30,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:30,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2018-07-25 09:35:30,735 INFO L87 Difference]: Start difference. First operand 89 states and 159 transitions. Second operand 7 states. [2018-07-25 09:35:31,023 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2018-07-25 09:35:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:31,700 INFO L93 Difference]: Finished difference Result 134 states and 238 transitions. [2018-07-25 09:35:31,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:31,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-07-25 09:35:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:31,702 INFO L225 Difference]: With dead ends: 134 [2018-07-25 09:35:31,703 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 09:35:31,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33574 GetRequests, 33494 SyntacticMatches, 50 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2018-07-25 09:35:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 09:35:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2018-07-25 09:35:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 09:35:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 145 transitions. [2018-07-25 09:35:31,726 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 145 transitions. Word has length 48 [2018-07-25 09:35:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:31,727 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 145 transitions. [2018-07-25 09:35:31,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 145 transitions. [2018-07-25 09:35:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 09:35:31,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:31,729 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:31,729 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash -359900094, now seen corresponding path program 1 times [2018-07-25 09:35:31,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:36,285 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-07-25 09:35:36,582 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:35:42,735 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:35:44,436 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:44,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:44,438 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:44,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:44,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-25 09:35:44,439 INFO L87 Difference]: Start difference. First operand 81 states and 145 transitions. Second operand 7 states. [2018-07-25 09:35:44,677 WARN L169 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-07-25 09:35:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:45,415 INFO L93 Difference]: Finished difference Result 185 states and 332 transitions. [2018-07-25 09:35:45,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:45,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-07-25 09:35:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:45,419 INFO L225 Difference]: With dead ends: 185 [2018-07-25 09:35:45,419 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 09:35:45,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30237 GetRequests, 30176 SyntacticMatches, 41 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-25 09:35:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 09:35:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 09:35:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 09:35:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 313 transitions. [2018-07-25 09:35:45,482 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 313 transitions. Word has length 51 [2018-07-25 09:35:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:45,483 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 313 transitions. [2018-07-25 09:35:45,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 313 transitions. [2018-07-25 09:35:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 09:35:45,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:45,485 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:45,486 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:45,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1204157128, now seen corresponding path program 1 times [2018-07-25 09:35:45,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:46,597 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-07-25 09:35:48,362 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:35:49,805 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:35:51,376 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:35:54,064 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:35:55,010 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-07-25 09:35:55,458 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:35:55,836 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:35:59,477 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:36:05,465 WARN L169 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:36:11,096 WARN L169 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:36:13,143 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-07-25 09:36:13,698 WARN L169 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-07-25 09:36:32,452 WARN L169 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-07-25 09:36:39,399 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:36:39,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:36:39,400 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:36:39,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:36:39,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1087, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 09:36:39,402 INFO L87 Difference]: Start difference. First operand 173 states and 313 transitions. Second operand 8 states. [2018-07-25 09:36:39,859 WARN L169 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2018-07-25 09:36:40,589 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-07-25 09:36:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:36:41,013 INFO L93 Difference]: Finished difference Result 261 states and 470 transitions. [2018-07-25 09:36:41,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:36:41,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-25 09:36:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:36:41,016 INFO L225 Difference]: With dead ends: 261 [2018-07-25 09:36:41,017 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 09:36:41,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67672 GetRequests, 67567 SyntacticMatches, 65 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=467, Invalid=1255, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 09:36:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 09:36:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 128. [2018-07-25 09:36:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 09:36:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 231 transitions. [2018-07-25 09:36:41,064 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 231 transitions. Word has length 59 [2018-07-25 09:36:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:36:41,064 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 231 transitions. [2018-07-25 09:36:41,065 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:36:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 231 transitions. [2018-07-25 09:36:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 09:36:41,067 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:36:41,067 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:36:41,067 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:36:41,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1746155662, now seen corresponding path program 1 times [2018-07-25 09:36:41,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:36:42,793 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-25 09:36:46,244 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:36:52,772 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:36:54,125 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-07-25 09:37:06,474 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-07-25 09:37:10,155 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:37:10,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:37:10,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:37:10,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:37:10,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-07-25 09:37:10,157 INFO L87 Difference]: Start difference. First operand 128 states and 231 transitions. Second operand 8 states. [2018-07-25 09:37:10,518 WARN L169 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-07-25 09:37:10,855 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-07-25 09:37:11,389 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-07-25 09:37:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:37:11,781 INFO L93 Difference]: Finished difference Result 268 states and 484 transitions. [2018-07-25 09:37:11,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:37:11,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-07-25 09:37:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:37:11,784 INFO L225 Difference]: With dead ends: 268 [2018-07-25 09:37:11,784 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 09:37:11,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53211 GetRequests, 53137 SyntacticMatches, 49 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-07-25 09:37:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 09:37:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2018-07-25 09:37:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 09:37:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 457 transitions. [2018-07-25 09:37:11,876 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 457 transitions. Word has length 61 [2018-07-25 09:37:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:37:11,877 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 457 transitions. [2018-07-25 09:37:11,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:37:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 457 transitions. [2018-07-25 09:37:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 09:37:11,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:37:11,880 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:37:11,880 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:37:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash 443233512, now seen corresponding path program 1 times [2018-07-25 09:37:11,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:37:14,681 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:37:16,356 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:37:18,127 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:37:21,654 WARN L169 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-07-25 09:37:22,824 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-07-25 09:37:23,107 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:37:23,522 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:37:27,242 WARN L169 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:37:33,564 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-07-25 09:37:40,494 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:37:42,918 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-07-25 09:37:43,454 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-07-25 09:37:44,195 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-07-25 09:37:44,596 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-07-25 09:37:50,976 WARN L169 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-07-25 09:38:08,541 WARN L169 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-07-25 09:38:17,511 WARN L169 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-07-25 09:38:22,124 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-07-25 09:38:22,879 WARN L169 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-07-25 09:39:00,749 WARN L169 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-07-25 09:39:13,728 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:39:13,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:39:13,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:39:13,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:39:13,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 09:39:13,731 INFO L87 Difference]: Start difference. First operand 252 states and 457 transitions. Second operand 9 states. [2018-07-25 09:39:14,443 WARN L169 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-07-25 09:39:14,771 WARN L169 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2018-07-25 09:39:15,501 WARN L169 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-07-25 09:39:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:39:16,130 INFO L93 Difference]: Finished difference Result 406 states and 735 transitions. [2018-07-25 09:39:16,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:39:16,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-25 09:39:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:39:16,134 INFO L225 Difference]: With dead ends: 406 [2018-07-25 09:39:16,134 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 09:39:16,135 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117074 GetRequests, 116945 SyntacticMatches, 79 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 09:39:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 09:39:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 185. [2018-07-25 09:39:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 09:39:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 335 transitions. [2018-07-25 09:39:16,195 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 335 transitions. Word has length 69 [2018-07-25 09:39:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:39:16,195 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 335 transitions. [2018-07-25 09:39:16,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:39:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 335 transitions. [2018-07-25 09:39:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 09:39:16,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:39:16,197 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:39:16,197 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:39:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1532150264, now seen corresponding path program 1 times [2018-07-25 09:39:16,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:39:18,082 WARN L169 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-07-25 09:39:21,406 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-25 09:39:22,212 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:39:28,662 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-07-25 09:39:30,066 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 64 Received shutdown request... [2018-07-25 09:39:40,593 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:39:40,598 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:39:40,598 INFO L202 PluginConnector]: Adding new model s3_srvr_1.BV.c.cil.c_21.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:39:40 BoogieIcfgContainer [2018-07-25 09:39:40,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:39:40,600 INFO L168 Benchmark]: Toolchain (without parser) took 281599.36 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -59.2 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 194.0 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:40,601 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-07-25 09:39:40,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.38 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. [2018-07-25 09:39:40,602 INFO L168 Benchmark]: Boogie Preprocessor took 60.39 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. [2018-07-25 09:39:40,602 INFO L168 Benchmark]: RCFGBuilder took 844.15 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:40,603 INFO L168 Benchmark]: TraceAbstraction took 280626.71 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -59.2 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 162.3 MB). Peak memory consumption was 103.1 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:40,607 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 0.18 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 58.38 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 60.39 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 844.15 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 280626.71 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -59.2 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 162.3 MB). Peak memory consumption was 103.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 479]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 479). Cancelled while BasicCegarLoop was analyzing trace of length 71 with TraceHistMax 6, while Pdr was Timeout or canceled while running Pdr. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. TIMEOUT Result, 280.5s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 9.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 967 SDslu, 31 SDs, 0 SdLazy, 830 SolverSat, 989 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320277 GetRequests, 319739 SyntacticMatches, 344 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7426 ImplicationChecksByTransitivity, 35.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 246.3s PdrRuntime, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_1.BV.c.cil.c_21.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-39-40-620.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_1.BV.c.cil.c_21.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-39-40-620.csv Completed graceful shutdown