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_alt.BV.c.cil.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 09:35:14,108 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 09:35:14,110 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 09:35:14,127 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 09:35:14,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 09:35:14,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 09:35:14,130 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 09:35:14,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 09:35:14,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 09:35:14,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 09:35:14,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 09:35:14,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 09:35:14,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 09:35:14,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 09:35:14,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 09:35:14,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 09:35:14,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 09:35:14,143 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 09:35:14,145 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 09:35:14,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 09:35:14,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 09:35:14,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 09:35:14,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 09:35:14,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 09:35:14,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 09:35:14,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 09:35:14,155 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 09:35:14,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 09:35:14,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 09:35:14,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 09:35:14,158 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 09:35:14,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 09:35:14,159 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 09:35:14,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 09:35:14,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 09:35:14,161 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 09:35:14,162 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr.epf [2018-07-25 09:35:14,170 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 09:35:14,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 09:35:14,172 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 09:35:14,172 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 09:35:14,173 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 09:35:14,173 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 09:35:14,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 09:35:14,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 09:35:14,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 09:35:14,260 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 09:35:14,260 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 09:35:14,261 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3_alt.BV.c.cil.c_19.bpl [2018-07-25 09:35:14,262 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_3_alt.BV.c.cil.c_19.bpl' [2018-07-25 09:35:14,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 09:35:14,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 09:35:14,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:14,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 09:35:14,393 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 09:35:14,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 09:35:14,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 09:35:14,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 09:35:14,447 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 09:35:14,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/1) ... [2018-07-25 09:35:14,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 09:35:14,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 09:35:14,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 09:35:14,508 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 09:35:14,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (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 09:35:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 09:35:14,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 09:35:15,293 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 09:35:15,294 INFO L202 PluginConnector]: Adding new model s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:15 BoogieIcfgContainer [2018-07-25 09:35:15,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 09:35:15,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 09:35:15,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 09:35:15,298 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 09:35:15,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 09:35:14" (1/2) ... [2018-07-25 09:35:15,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ba4f1e and model type s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 09:35:15, skipping insertion in model container [2018-07-25 09:35:15,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 09:35:15" (2/2) ... [2018-07-25 09:35:15,302 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3_alt.BV.c.cil.c_19.bpl [2018-07-25 09:35:15,312 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 09:35:15,326 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 09:35:15,382 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 09:35:15,383 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 09:35:15,383 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 09:35:15,383 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 09:35:15,383 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 09:35:15,383 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 09:35:15,383 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 09:35:15,384 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 09:35:15,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 09:35:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-25 09:35:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 09:35:15,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:15,420 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 09:35:15,421 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -505433715, now seen corresponding path program 1 times [2018-07-25 09:35:15,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:15,764 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-07-25 09:35:16,686 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:16,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 09:35:16,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 09:35:16,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 09:35:16,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:16,701 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-07-25 09:35:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:17,032 INFO L93 Difference]: Finished difference Result 47 states and 81 transitions. [2018-07-25 09:35:17,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 09:35:17,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-25 09:35:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:17,052 INFO L225 Difference]: With dead ends: 47 [2018-07-25 09:35:17,053 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 09:35:17,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 839 SyntacticMatches, 11 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 09:35:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 09:35:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 09:35:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:17,108 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 15 [2018-07-25 09:35:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:17,110 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:17,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 09:35:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 09:35:17,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:17,112 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 09:35:17,112 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:17,113 INFO L82 PathProgramCache]: Analyzing trace with hash 339867556, now seen corresponding path program 1 times [2018-07-25 09:35:17,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:19,010 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:19,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:19,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:19,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:19,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:19,013 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:19,370 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2018-07-25 09:35:19,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 09:35:19,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-07-25 09:35:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:19,376 INFO L225 Difference]: With dead ends: 60 [2018-07-25 09:35:19,376 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 09:35:19,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3162 GetRequests, 3135 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 09:35:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 09:35:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2018-07-25 09:35:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 09:35:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2018-07-25 09:35:19,389 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 35 [2018-07-25 09:35:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:19,389 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2018-07-25 09:35:19,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2018-07-25 09:35:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 09:35:19,391 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:19,393 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 09:35:19,394 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:19,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1742811638, now seen corresponding path program 1 times [2018-07-25 09:35:19,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:20,973 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-07-25 09:35:23,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:23,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 09:35:23,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 09:35:23,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 09:35:23,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-07-25 09:35:23,996 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand 6 states. [2018-07-25 09:35:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:24,758 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2018-07-25 09:35:24,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 09:35:24,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 09:35:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:24,760 INFO L225 Difference]: With dead ends: 98 [2018-07-25 09:35:24,761 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 09:35:24,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14493 GetRequests, 14446 SyntacticMatches, 32 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-07-25 09:35:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 09:35:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2018-07-25 09:35:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 09:35:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 159 transitions. [2018-07-25 09:35:24,794 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 159 transitions. Word has length 40 [2018-07-25 09:35:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:24,794 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 159 transitions. [2018-07-25 09:35:24,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 09:35:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2018-07-25 09:35:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 09:35:24,796 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:24,797 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 09:35:24,797 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:24,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1365477056, now seen corresponding path program 1 times [2018-07-25 09:35:24,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:27,293 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-07-25 09:35:28,596 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:31,908 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:35:32,867 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:35:38,924 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:35:41,012 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:41,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:41,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:41,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:41,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2018-07-25 09:35:41,014 INFO L87 Difference]: Start difference. First operand 89 states and 159 transitions. Second operand 7 states. [2018-07-25 09:35:41,245 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-07-25 09:35:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:42,486 INFO L93 Difference]: Finished difference Result 134 states and 238 transitions. [2018-07-25 09:35:42,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:42,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-07-25 09:35:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:42,489 INFO L225 Difference]: With dead ends: 134 [2018-07-25 09:35:42,490 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 09:35:42,491 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 09:35:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 09:35:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2018-07-25 09:35:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 09:35:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 145 transitions. [2018-07-25 09:35:42,513 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 145 transitions. Word has length 48 [2018-07-25 09:35:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:42,514 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 145 transitions. [2018-07-25 09:35:42,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 145 transitions. [2018-07-25 09:35:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 09:35:42,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:42,516 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 09:35:42,516 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1043959706, now seen corresponding path program 1 times [2018-07-25 09:35:42,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:46,425 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-07-25 09:35:46,773 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:35:52,047 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:35:53,568 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:35:53,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 09:35:53,569 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 09:35:53,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 09:35:53,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-07-25 09:35:53,570 INFO L87 Difference]: Start difference. First operand 81 states and 145 transitions. Second operand 7 states. [2018-07-25 09:35:53,815 WARN L169 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 09:35:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:35:54,710 INFO L93 Difference]: Finished difference Result 185 states and 332 transitions. [2018-07-25 09:35:54,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 09:35:54,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-07-25 09:35:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:35:54,713 INFO L225 Difference]: With dead ends: 185 [2018-07-25 09:35:54,713 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 09:35:54,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30237 GetRequests, 30176 SyntacticMatches, 41 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-07-25 09:35:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 09:35:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 09:35:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 09:35:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 313 transitions. [2018-07-25 09:35:54,772 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 313 transitions. Word has length 51 [2018-07-25 09:35:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:35:54,772 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 313 transitions. [2018-07-25 09:35:54,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 09:35:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 313 transitions. [2018-07-25 09:35:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 09:35:54,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:35:54,775 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 09:35:54,776 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:35:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1888216740, now seen corresponding path program 1 times [2018-07-25 09:35:54,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:35:58,195 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:36:01,602 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:36:02,635 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:36:03,042 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:36:05,800 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 09:36:10,271 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:36:14,855 WARN L169 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 09:36:17,199 WARN L169 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:36:32,370 WARN L169 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:36:37,897 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:36:37,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:36:37,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:36:37,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:36:37,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 09:36:37,899 INFO L87 Difference]: Start difference. First operand 173 states and 313 transitions. Second operand 8 states. [2018-07-25 09:36:38,886 WARN L169 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-07-25 09:36:39,620 WARN L169 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 09:36:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:36:40,016 INFO L93 Difference]: Finished difference Result 261 states and 470 transitions. [2018-07-25 09:36:40,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:36:40,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-25 09:36:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:36:40,020 INFO L225 Difference]: With dead ends: 261 [2018-07-25 09:36:40,020 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 09:36:40,021 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 09:36:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 09:36:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 128. [2018-07-25 09:36:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 09:36:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 231 transitions. [2018-07-25 09:36:40,059 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 231 transitions. Word has length 59 [2018-07-25 09:36:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:36:40,060 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 231 transitions. [2018-07-25 09:36:40,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:36:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 231 transitions. [2018-07-25 09:36:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 09:36:40,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:36:40,064 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 09:36:40,064 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:36:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1864752022, now seen corresponding path program 1 times [2018-07-25 09:36:40,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:36:44,214 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:36:49,686 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:36:50,964 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 09:37:01,289 WARN L169 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 09:37:04,252 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:37:04,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 09:37:04,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 09:37:04,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 09:37:04,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-07-25 09:37:04,254 INFO L87 Difference]: Start difference. First operand 128 states and 231 transitions. Second operand 8 states. [2018-07-25 09:37:04,595 WARN L169 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-07-25 09:37:04,926 WARN L169 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 09:37:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:37:05,846 INFO L93 Difference]: Finished difference Result 268 states and 484 transitions. [2018-07-25 09:37:05,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 09:37:05,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-07-25 09:37:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:37:05,849 INFO L225 Difference]: With dead ends: 268 [2018-07-25 09:37:05,849 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 09:37:05,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53211 GetRequests, 53137 SyntacticMatches, 49 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2018-07-25 09:37:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 09:37:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2018-07-25 09:37:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 09:37:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 457 transitions. [2018-07-25 09:37:05,932 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 457 transitions. Word has length 61 [2018-07-25 09:37:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:37:05,932 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 457 transitions. [2018-07-25 09:37:05,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 09:37:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 457 transitions. [2018-07-25 09:37:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 09:37:05,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:37:05,935 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 09:37:05,935 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:37:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash -240826100, now seen corresponding path program 1 times [2018-07-25 09:37:05,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:37:08,324 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 09:37:09,487 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:37:13,003 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:37:13,768 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-07-25 09:37:14,158 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:37:14,464 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:37:17,335 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 09:37:22,027 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:37:26,940 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 09:37:29,029 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-07-25 09:37:29,466 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-25 09:37:29,710 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 09:37:30,225 WARN L169 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:37:34,814 WARN L169 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-07-25 09:37:48,429 WARN L169 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:37:55,799 WARN L169 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-07-25 09:38:00,200 WARN L169 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 09:38:32,501 WARN L169 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-07-25 09:38:43,326 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:38:43,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:38:43,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:38:43,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:38:43,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=1660, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 09:38:43,329 INFO L87 Difference]: Start difference. First operand 252 states and 457 transitions. Second operand 9 states. [2018-07-25 09:38:45,810 WARN L169 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2018-07-25 09:38:46,183 WARN L169 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 09:38:46,969 WARN L169 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-07-25 09:38:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:38:47,703 INFO L93 Difference]: Finished difference Result 406 states and 735 transitions. [2018-07-25 09:38:47,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:38:47,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-25 09:38:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:38:47,706 INFO L225 Difference]: With dead ends: 406 [2018-07-25 09:38:47,707 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 09:38:47,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117074 GetRequests, 116945 SyntacticMatches, 79 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 09:38:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 09:38:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 185. [2018-07-25 09:38:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 09:38:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 335 transitions. [2018-07-25 09:38:47,778 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 335 transitions. Word has length 69 [2018-07-25 09:38:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:38:47,778 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 335 transitions. [2018-07-25 09:38:47,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:38:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 335 transitions. [2018-07-25 09:38:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 09:38:47,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:38:47,780 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 09:38:47,780 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:38:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2078757420, now seen corresponding path program 1 times [2018-07-25 09:38:47,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:38:48,300 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-25 09:38:48,552 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-25 09:38:52,608 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:38:58,454 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:38:59,759 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 09:39:10,660 WARN L169 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-07-25 09:39:12,442 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-07-25 09:39:12,940 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:39:29,753 WARN L169 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-07-25 09:39:35,150 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 09:39:35,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 09:39:35,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 09:39:35,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 09:39:35,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2018-07-25 09:39:35,151 INFO L87 Difference]: Start difference. First operand 185 states and 335 transitions. Second operand 9 states. [2018-07-25 09:39:35,640 WARN L169 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2018-07-25 09:39:36,125 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-07-25 09:39:37,013 WARN L169 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-07-25 09:39:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:39:37,237 INFO L93 Difference]: Finished difference Result 353 states and 640 transitions. [2018-07-25 09:39:37,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 09:39:37,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-07-25 09:39:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:39:37,241 INFO L225 Difference]: With dead ends: 353 [2018-07-25 09:39:37,241 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 09:39:37,243 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 09:39:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 09:39:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2018-07-25 09:39:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 09:39:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 601 transitions. [2018-07-25 09:39:37,367 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 601 transitions. Word has length 70 [2018-07-25 09:39:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:39:37,368 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 601 transitions. [2018-07-25 09:39:37,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 09:39:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 601 transitions. [2018-07-25 09:39:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 09:39:37,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:39:37,370 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 09:39:37,370 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:39:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash 927770998, now seen corresponding path program 1 times [2018-07-25 09:39:37,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:39:40,818 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:42,061 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-07-25 09:39:44,737 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-07-25 09:39:45,897 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2018-07-25 09:39:46,259 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-07-25 09:39:49,273 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-07-25 09:39:54,202 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-07-25 09:39:55,694 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:39:55,699 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:39:55,699 INFO L202 PluginConnector]: Adding new model s3_srvr_3_alt.BV.c.cil.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:39:55 BoogieIcfgContainer [2018-07-25 09:39:55,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:39:55,700 INFO L168 Benchmark]: Toolchain (without parser) took 281312.02 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 185.4 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:55,701 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 09:39:55,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.58 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 09:39:55,702 INFO L168 Benchmark]: Boogie Preprocessor took 60.07 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 09:39:55,703 INFO L168 Benchmark]: RCFGBuilder took 786.48 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 09:39:55,703 INFO L168 Benchmark]: TraceAbstraction took 280404.58 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 143.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2018-07-25 09:39:55,707 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 0.22 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 55.58 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 60.07 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 786.48 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 280404.58 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -134.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 143.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 484]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 484). Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 7, 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, 280.3s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 1128 SDslu, 37 SDs, 0 SdLazy, 1014 SolverSat, 1110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403813 GetRequests, 403188 SyntacticMatches, 400 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8399 ImplicationChecksByTransitivity, 39.9s 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: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 466 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 247.0s 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_alt.BV.c.cil.c_19.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-39-55-718.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_3_alt.BV.c.cil.c_19.bpl_AutomizerBpl-pdr.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-39-55-718.csv Completed graceful shutdown