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/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 16:12:25,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 16:12:25,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 16:12:25,274 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 16:12:25,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 16:12:25,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 16:12:25,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 16:12:25,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 16:12:25,280 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 16:12:25,281 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 16:12:25,282 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 16:12:25,282 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 16:12:25,283 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 16:12:25,284 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 16:12:25,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 16:12:25,286 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 16:12:25,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 16:12:25,291 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 16:12:25,293 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 16:12:25,297 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 16:12:25,298 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 16:12:25,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 16:12:25,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 16:12:25,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 16:12:25,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 16:12:25,307 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 16:12:25,308 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 16:12:25,310 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 16:12:25,311 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 16:12:25,316 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 16:12:25,316 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 16:12:25,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 16:12:25,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 16:12:25,319 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 16:12:25,320 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 16:12:25,321 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 16:12:25,321 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 16:12:25,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 16:12:25,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 16:12:25,341 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 16:12:25,341 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-23 16:12:25,344 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 16:12:25,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 16:12:25,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 16:12:25,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 16:12:25,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 16:12:25,435 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 16:12:25,436 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 16:12:25,437 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-07-23 16:12:25,437 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl' [2018-07-23 16:12:25,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 16:12:25,515 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 16:12:25,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 16:12:25,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 16:12:25,516 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 16:12:25,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/1) ... [2018-07-23 16:12:25,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 16:12:25,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 16:12:25,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 16:12:25,607 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 16:12:25,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (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 16:12:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 16:12:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 16:12:26,807 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 16:12:26,808 INFO L202 PluginConnector]: Adding new model pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:12:26 BoogieIcfgContainer [2018-07-23 16:12:26,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 16:12:26,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 16:12:26,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 16:12:26,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 16:12:26,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 04:12:25" (1/2) ... [2018-07-23 16:12:26,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2874220a and model type pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:12:26, skipping insertion in model container [2018-07-23 16:12:26,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:12:26" (2/2) ... [2018-07-23 16:12:26,816 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-07-23 16:12:26,830 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-23 16:12:26,842 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 16:12:26,882 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 16:12:26,883 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 16:12:26,883 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 16:12:26,884 INFO L375 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-23 16:12:26,884 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 16:12:26,884 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 16:12:26,884 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 16:12:26,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 16:12:26,885 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 16:12:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 16:12:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 16:12:26,907 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 16:12:26,908 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 16:12:26,908 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 16:12:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash 998225, now seen corresponding path program 1 times [2018-07-23 16:12:26,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 16:12:27,452 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-07-23 16:12:27,676 WARN L169 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-07-23 16:12:27,702 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 16:12:27,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 16:12:27,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 16:12:27,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 16:12:27,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 16:12:27,715 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 16:12:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 16:12:27,784 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-23 16:12:27,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 16:12:27,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 16:12:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 16:12:27,797 INFO L225 Difference]: With dead ends: 10 [2018-07-23 16:12:27,797 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 16:12:27,801 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 16:12:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 16:12:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 16:12:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 16:12:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 16:12:27,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 16:12:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 16:12:27,837 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 16:12:27,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 16:12:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 16:12:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 16:12:27,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 16:12:27,838 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 16:12:27,838 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 16:12:27,839 INFO L82 PathProgramCache]: Analyzing trace with hash 959374695, now seen corresponding path program 1 times [2018-07-23 16:12:27,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 16:12:28,411 WARN L169 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-07-23 16:12:28,897 WARN L169 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-07-23 16:12:29,334 WARN L169 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2018-07-23 16:12:30,096 WARN L169 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-07-23 16:12:31,326 WARN L169 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2018-07-23 16:12:33,019 WARN L169 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2018-07-23 16:12:35,925 WARN L169 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 381 [2018-07-23 16:12:38,096 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 422 [2018-07-23 16:12:39,858 WARN L169 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 498 [2018-07-23 16:12:47,272 WARN L169 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 503 DAG size of output: 502 [2018-07-23 16:12:52,823 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 518 [2018-07-23 16:12:55,618 WARN L169 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 619 [2018-07-23 16:13:10,113 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 523 [2018-07-23 16:13:13,880 WARN L169 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 624 DAG size of output: 623 [2018-07-23 16:13:28,116 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 614 [2018-07-23 16:13:32,260 WARN L169 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 740 [2018-07-23 16:14:01,735 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 619 [2018-07-23 16:14:03,243 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 620 [2018-07-23 16:14:07,468 WARN L169 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 745 DAG size of output: 744 [2018-07-23 16:14:39,493 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 712 DAG size of output: 710 [2018-07-23 16:14:46,340 WARN L169 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 861 [2018-07-23 16:14:58,436 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: what to do with the great unknown? at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:388) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.computePdr(Pdr.java:274) at de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.(Pdr.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructPdr(TraceCheckConstructor.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:130) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:406) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-07-23 16:14:58,440 INFO L168 Benchmark]: Toolchain (without parser) took 152927.22 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 214.4 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 457.9 MB). Peak memory consumption was 672.3 MB. Max. memory is 7.1 GB. [2018-07-23 16:14:58,441 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 16:14:58,442 INFO L168 Benchmark]: Boogie Preprocessor took 90.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 16:14:58,442 INFO L168 Benchmark]: RCFGBuilder took 1201.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-23 16:14:58,443 INFO L168 Benchmark]: TraceAbstraction took 151629.94 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 214.4 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 394.4 MB). Peak memory consumption was 608.9 MB. Max. memory is 7.1 GB. [2018-07-23 16:14:58,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 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 90.53 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 1201.45 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 151629.94 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 214.4 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 394.4 MB). Peak memory consumption was 608.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: what to do with the great unknown? de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: what to do with the great unknown?: de.uni_freiburg.informatik.ultimate.lib.pdr.Pdr.blockingPhase(Pdr.java:388) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl_AutomizerBpl-pdr.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_16-14-58-461.csv [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forcibly destroying the process Received shutdown request...