java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 16:24:04,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 16:24:04,245 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 16:24:04,257 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 16:24:04,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 16:24:04,259 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 16:24:04,260 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 16:24:04,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 16:24:04,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 16:24:04,267 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 16:24:04,269 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 16:24:04,269 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 16:24:04,270 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 16:24:04,271 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 16:24:04,272 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 16:24:04,273 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 16:24:04,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 16:24:04,276 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 16:24:04,278 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 16:24:04,283 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 16:24:04,284 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 16:24:04,285 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 16:24:04,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 16:24:04,301 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 16:24:04,301 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 16:24:04,302 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 16:24:04,306 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 16:24:04,306 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf [2018-07-23 16:24:04,323 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 16:24:04,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 16:24:04,325 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 16:24:04,326 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-23 16:24:04,326 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 16:24:04,326 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 16:24:04,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 16:24:04,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 16:24:04,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 16:24:04,421 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 16:24:04,421 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 16:24:04,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl [2018-07-23 16:24:04,422 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Sandman01.bpl' [2018-07-23 16:24:04,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 16:24:04,474 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 16:24:04,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 16:24:04,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 16:24:04,478 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 16:24:04,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/1) ... [2018-07-23 16:24:04,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 16:24:04,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 16:24:04,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 16:24:04,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 16:24:04,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (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 [2018-07-23 16:24:04,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-23 16:24:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 16:24:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 16:24:04,870 INFO L258 CfgBuilder]: Using library mode [2018-07-23 16:24:04,871 INFO L202 PluginConnector]: Adding new model Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:24:04 BoogieIcfgContainer [2018-07-23 16:24:04,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 16:24:04,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 16:24:04,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 16:24:04,879 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 16:24:04,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:24:04" (1/2) ... [2018-07-23 16:24:04,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c121fe and model type Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:24:04, skipping insertion in model container [2018-07-23 16:24:04,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Sandman01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:24:04" (2/2) ... [2018-07-23 16:24:04,883 INFO L112 eAbstractionObserver]: Analyzing ICFG Sandman01.bpl [2018-07-23 16:24:04,894 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-23 16:24:04,906 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 16:24:04,951 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 16:24:04,951 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 16:24:04,952 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 16:24:04,952 INFO L375 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-23 16:24:04,952 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 16:24:04,952 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 16:24:04,952 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 16:24:04,952 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 16:24:04,953 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 16:24:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 16:24:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 16:24:04,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 16:24:04,974 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 16:24:04,975 INFO L414 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolationASSERT]=== [2018-07-23 16:24:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-07-23 16:24:04,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 16:24:05,280 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 16:24:05,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 16:24:05,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 16:24:05,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 16:24:05,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 16:24:05,293 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 16:24:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 16:24:05,365 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-07-23 16:24:05,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 16:24:05,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-07-23 16:24:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 16:24:05,381 INFO L225 Difference]: With dead ends: 11 [2018-07-23 16:24:05,381 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 16:24:05,384 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 16:24:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 16:24:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 16:24:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 16:24:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 16:24:05,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 16:24:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 16:24:05,414 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 16:24:05,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 16:24:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 16:24:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 16:24:05,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 16:24:05,415 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 16:24:05,415 INFO L414 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolationASSERT]=== [2018-07-23 16:24:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-07-23 16:24:05,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 16:24:05,896 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-23 16:24:07,373 WARN L169 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-07-23 16:24:08,211 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-07-23 16:24:09,072 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-07-23 16:24:10,508 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-23 16:24:15,505 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2018-07-23 16:24:34,602 WARN L169 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-07-23 16:25:58,507 WARN L169 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 125 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown