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_3.BV.c.cil.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 09:35:09,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 09:35:09,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 09:35:09,825 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 09:35:09,825 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 09:35:09,826 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 09:35:09,827 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 09:35:09,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 09:35:09,831 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 09:35:09,832 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 09:35:09,833 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 09:35:09,833 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 09:35:09,834 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 09:35:09,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 09:35:09,836 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 09:35:09,837 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 09:35:09,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 09:35:09,840 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 09:35:09,842 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 09:35:09,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 09:35:09,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 09:35:09,846 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 09:35:09,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 09:35:09,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 09:35:09,849 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 09:35:09,850 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 09:35:09,851 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 09:35:09,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 09:35:09,852 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 09:35:09,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 09:35:09,854 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 09:35:09,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 09:35:09,857 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf [2018-07-25 09:35:09,865 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 09:35:09,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 09:35:09,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 09:35:09,867 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 09:35:09,868 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 09:35:09,868 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 09:35:09,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 09:35:09,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 09:35:09,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 09:35:09,934 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 09:35:09,934 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 09:35:09,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3.BV.c.cil.c_19.bpl [2018-07-25 09:35:09,935 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3.BV.c.cil.c_19.bpl' [2018-07-25 09:35:10,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 09:35:10,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 09:35:10,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:10,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 09:35:10,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 09:35:10,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:10,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 09:35:10,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 09:35:10,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 09:35:10,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/1) ... [2018-07-25 09:35:10,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 09:35:10,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 09:35:10,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 09:35:10,096 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 09:35:10,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (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 09:35:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 09:35:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 09:35:11,006 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 09:35:11,006 INFO L202 PluginConnector]: Adding new model s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:11 BoogieIcfgContainer [2018-07-25 09:35:11,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 09:35:11,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 09:35:11,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 09:35:11,011 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 09:35:11,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:10" (1/2) ... [2018-07-25 09:35:11,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ff3a45 and model type s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 09:35:11, skipping insertion in model container [2018-07-25 09:35:11,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:11" (2/2) ... [2018-07-25 09:35:11,015 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3.BV.c.cil.c_19.bpl [2018-07-25 09:35:11,025 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 09:35:11,034 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 09:35:11,080 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 09:35:11,081 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 09:35:11,081 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 09:35:11,081 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 09:35:11,081 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 09:35:11,081 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 09:35:11,081 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 09:35:11,082 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 09:35:11,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 09:35:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-25 09:35:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 09:35:11,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:11,106 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:11,108 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -505433715, now seen corresponding path program 1 times [2018-07-25 09:35:11,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:11,454 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-07-25 09:35:12,454 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:12,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 09:35:12,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 09:35:12,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 09:35:12,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:12,471 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-07-25 09:35:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:13,051 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2018-07-25 09:35:13,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 09:35:13,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-25 09:35:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:13,069 INFO L225 Difference]: With dead ends: 47 [2018-07-25 09:35:13,069 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 09:35:13,073 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 09:35:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 09:35:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 09:35:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:13,120 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 15 [2018-07-25 09:35:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:13,121 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:13,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 09:35:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 09:35:13,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:13,123 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 09:35:13,124 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 339867556, now seen corresponding path program 1 times [2018-07-25 09:35:13,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:14,123 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-25 09:35:14,313 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-25 09:35:15,137 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:15,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:15,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:15,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:15,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:15,140 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:15,586 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2018-07-25 09:35:15,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 09:35:15,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-07-25 09:35:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:15,589 INFO L225 Difference]: With dead ends: 60 [2018-07-25 09:35:15,589 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 09:35:15,591 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3162 GetRequests, 3135 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 09:35:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-07-25 09:35:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:15,602 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 35 [2018-07-25 09:35:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:15,603 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:15,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 09:35:15,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:15,604 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 09:35:15,605 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:15,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1742811638, now seen corresponding path program 1 times [2018-07-25 09:35:15,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:17,144 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 09:35:20,371 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:20,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:20,371 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:20,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:20,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-25 09:35:20,373 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:21,137 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2018-07-25 09:35:21,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 09:35:21,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 09:35:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:21,139 INFO L225 Difference]: With dead ends: 98 [2018-07-25 09:35:21,139 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 09:35:21,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14493 GetRequests, 14446 SyntacticMatches, 32 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-25 09:35:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 09:35:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2018-07-25 09:35:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 09:35:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 159 transitions. [2018-07-25 09:35:21,167 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 159 transitions. Word has length 40 [2018-07-25 09:35:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:21,168 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 159 transitions. [2018-07-25 09:35:21,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2018-07-25 09:35:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 09:35:21,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:21,170 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 09:35:21,171 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1365477056, now seen corresponding path program 1 times [2018-07-25 09:35:21,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:21,620 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2018-07-25 09:35:24,968 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:26,164 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 09:35:28,292 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:29,118 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-07-25 09:35:29,339 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:35:35,408 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:35:37,518 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:37,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:37,519 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:37,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:37,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2018-07-25 09:35:37,520 INFO L87 Difference]: Start difference. First operand 89 states and 159 transitions. Second operand 7 states. [2018-07-25 09:35:37,742 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-07-25 09:35:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:38,964 INFO L93 Difference]: Finished difference Result 134 states and 238 transitions. [2018-07-25 09:35:38,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:38,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-07-25 09:35:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:38,969 INFO L225 Difference]: With dead ends: 134 [2018-07-25 09:35:38,969 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 09:35:38,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33574 GetRequests, 33494 SyntacticMatches, 50 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2018-07-25 09:35:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 09:35:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2018-07-25 09:35:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 09:35:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 145 transitions. [2018-07-25 09:35:38,993 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 145 transitions. Word has length 48 [2018-07-25 09:35:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:38,996 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 145 transitions. [2018-07-25 09:35:38,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 145 transitions. [2018-07-25 09:35:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 09:35:38,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:38,999 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 09:35:39,002 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:39,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1043959706, now seen corresponding path program 1 times [2018-07-25 09:35:39,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:43,181 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:35:48,424 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:35:49,868 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:49,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:49,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:49,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:49,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-25 09:35:49,870 INFO L87 Difference]: Start difference. First operand 81 states and 145 transitions. Second operand 7 states. [2018-07-25 09:35:50,106 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-07-25 09:35:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:51,006 INFO L93 Difference]: Finished difference Result 185 states and 332 transitions. [2018-07-25 09:35:51,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:51,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-07-25 09:35:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:51,010 INFO L225 Difference]: With dead ends: 185 [2018-07-25 09:35:51,010 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 09:35:51,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30237 GetRequests, 30176 SyntacticMatches, 41 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-25 09:35:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 09:35:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 09:35:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 09:35:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 313 transitions. [2018-07-25 09:35:51,071 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 313 transitions. Word has length 51 [2018-07-25 09:35:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:51,072 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 313 transitions. [2018-07-25 09:35:51,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 313 transitions. [2018-07-25 09:35:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 09:35:51,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:51,075 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 09:35:51,075 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:51,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1888216740, now seen corresponding path program 1 times [2018-07-25 09:35:51,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:54,648 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:58,165 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:59,215 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:35:59,664 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:36:02,476 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-07-25 09:36:07,147 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:36:11,840 WARN L169 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-07-25 09:36:13,870 WARN L169 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-07-25 09:36:14,436 WARN L169 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-07-25 09:36:29,903 WARN L169 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-07-25 09:36:35,339 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:36:35,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:36:35,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:36:35,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:36:35,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 09:36:35,342 INFO L87 Difference]: Start difference. First operand 173 states and 313 transitions. Second operand 8 states. [2018-07-25 09:36:35,830 WARN L169 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-07-25 09:36:36,589 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-07-25 09:36:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:36:37,048 INFO L93 Difference]: Finished difference Result 261 states and 470 transitions. [2018-07-25 09:36:37,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:36:37,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-25 09:36:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:36:37,052 INFO L225 Difference]: With dead ends: 261 [2018-07-25 09:36:37,053 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 09:36:37,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67672 GetRequests, 67566 SyntacticMatches, 65 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=489, Invalid=1317, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 09:36:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 09:36:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 128. [2018-07-25 09:36:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 09:36:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 231 transitions. [2018-07-25 09:36:37,101 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 231 transitions. Word has length 59 [2018-07-25 09:36:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:36:37,101 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 231 transitions. [2018-07-25 09:36:37,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:36:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 231 transitions. [2018-07-25 09:36:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 09:36:37,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:36:37,105 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 09:36:37,105 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:36:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1864752022, now seen corresponding path program 1 times [2018-07-25 09:36:37,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:36:41,514 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:36:46,936 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:36:47,889 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-07-25 09:36:48,274 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-25 09:36:58,387 WARN L169 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-25 09:37:01,323 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:37:01,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:37:01,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:37:01,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:37:01,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-07-25 09:37:01,324 INFO L87 Difference]: Start difference. First operand 128 states and 231 transitions. Second operand 8 states. [2018-07-25 09:37:03,149 WARN L169 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-07-25 09:37:03,545 WARN L169 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-07-25 09:37:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:37:04,609 INFO L93 Difference]: Finished difference Result 268 states and 484 transitions. [2018-07-25 09:37:04,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:37:04,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-07-25 09:37:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:37:04,615 INFO L225 Difference]: With dead ends: 268 [2018-07-25 09:37:04,615 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 09:37:04,616 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53211 GetRequests, 53137 SyntacticMatches, 49 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-07-25 09:37:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 09:37:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2018-07-25 09:37:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 09:37:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 457 transitions. [2018-07-25 09:37:04,742 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 457 transitions. Word has length 61 [2018-07-25 09:37:04,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:37:04,743 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 457 transitions. [2018-07-25 09:37:04,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:37:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 457 transitions. [2018-07-25 09:37:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 09:37:04,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:37:04,753 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 09:37:04,753 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:37:04,753 INFO L82 PathProgramCache]: Analyzing trace with hash -240826100, now seen corresponding path program 1 times [2018-07-25 09:37:04,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:37:06,779 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-07-25 09:37:08,385 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:37:12,008 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:37:13,100 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:37:13,465 WARN L169 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:37:16,502 WARN L169 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-07-25 09:37:21,223 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:37:26,418 WARN L169 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-07-25 09:37:29,068 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-25 09:37:31,052 WARN L169 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 90 [2018-07-25 09:37:35,620 WARN L169 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:37:49,368 WARN L169 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-07-25 09:37:56,521 WARN L169 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:38:01,053 WARN L169 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-07-25 09:38:33,091 WARN L169 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-07-25 09:38:44,104 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:38:44,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:38:44,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:38:44,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:38:44,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 09:38:44,106 INFO L87 Difference]: Start difference. First operand 252 states and 457 transitions. Second operand 9 states. [2018-07-25 09:38:45,168 WARN L169 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2018-07-25 09:38:45,526 WARN L169 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-07-25 09:38:46,008 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-07-25 09:38:46,345 WARN L169 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-07-25 09:38:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:38:47,108 INFO L93 Difference]: Finished difference Result 406 states and 735 transitions. [2018-07-25 09:38:47,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:38:47,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-25 09:38:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:38:47,111 INFO L225 Difference]: With dead ends: 406 [2018-07-25 09:38:47,112 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 09:38:47,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117074 GetRequests, 116945 SyntacticMatches, 79 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 09:38:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 09:38:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 185. [2018-07-25 09:38:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 09:38:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 335 transitions. [2018-07-25 09:38:47,185 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 335 transitions. Word has length 69 [2018-07-25 09:38:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:38:47,185 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 335 transitions. [2018-07-25 09:38:47,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:38:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 335 transitions. [2018-07-25 09:38:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 09:38:47,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:38:47,187 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 09:38:47,187 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:38:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2078757420, now seen corresponding path program 1 times [2018-07-25 09:38:47,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:38:47,710 WARN L169 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-25 09:38:47,999 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 09:38:52,235 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:38:58,254 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:38:59,589 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-25 09:39:10,445 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-25 09:39:12,240 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-07-25 09:39:12,750 WARN L169 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-07-25 09:39:29,530 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-07-25 09:39:34,780 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:39:34,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:39:34,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:39:34,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:39:34,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2018-07-25 09:39:34,782 INFO L87 Difference]: Start difference. First operand 185 states and 335 transitions. Second operand 9 states. [2018-07-25 09:39:35,264 WARN L169 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2018-07-25 09:39:35,745 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-07-25 09:39:36,556 WARN L169 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-07-25 09:39:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:39:36,798 INFO L93 Difference]: Finished difference Result 353 states and 640 transitions. [2018-07-25 09:39:36,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:39:36,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-07-25 09:39:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:39:36,802 INFO L225 Difference]: With dead ends: 353 [2018-07-25 09:39:36,803 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 09:39:36,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83536 GetRequests, 83450 SyntacticMatches, 56 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 09:39:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 09:39:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2018-07-25 09:39:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 09:39:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 601 transitions. [2018-07-25 09:39:36,927 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 601 transitions. Word has length 70 [2018-07-25 09:39:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:39:36,927 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 601 transitions. [2018-07-25 09:39:36,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:39:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 601 transitions. [2018-07-25 09:39:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 09:39:36,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:39:36,929 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:39:36,929 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:39:36,930 INFO L82 PathProgramCache]: Analyzing trace with hash 927770998, now seen corresponding path program 1 times [2018-07-25 09:39:36,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:39:40,532 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:44,611 WARN L169 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:45,825 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-07-25 09:39:46,200 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-07-25 09:39:49,294 WARN L177 SmtUtils]: Removed 9 from assertion stack [2018-07-25 09:39:49,297 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:39:49,303 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:39:49,303 INFO L202 PluginConnector]: Adding new model s3_srvr_3.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:39:49 BoogieIcfgContainer [2018-07-25 09:39:49,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:39:49,304 INFO L168 Benchmark]: Toolchain (without parser) took 279292.53 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.9 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 387.6 MB). Peak memory consumption was 248.6 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:49,305 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 09:39:49,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.64 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 09:39:49,306 INFO L168 Benchmark]: Boogie Preprocessor took 35.89 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 09:39:49,306 INFO L168 Benchmark]: RCFGBuilder took 910.74 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:49,307 INFO L168 Benchmark]: TraceAbstraction took 278295.53 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.9 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 345.3 MB). Peak memory consumption was 206.4 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:49,311 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.64 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 35.89 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 910.74 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 278295.53 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.9 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 345.3 MB). Peak memory consumption was 206.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 480]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 480). Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 7, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 87. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. TIMEOUT Result, 278.2s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 14.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 1128 SDslu, 37 SDs, 0 SdLazy, 1014 SolverSat, 1110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403813 GetRequests, 403188 SyntacticMatches, 400 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8399 ImplicationChecksByTransitivity, 42.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=331occurred in iteration=9, 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: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 466 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 250.7s 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_3.BV.c.cil.c_19.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-39-49-324.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3.BV.c.cil.c_19.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-39-49-324.csv Completed graceful shutdown