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-smtinterpol.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:47:36,655 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:47:36,658 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:47:36,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:47:36,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:47:36,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:47:36,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:47:36,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:47:36,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:47:36,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:47:36,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:47:36,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:47:36,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:47:36,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:47:36,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:47:36,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:47:36,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:47:36,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:47:36,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:47:36,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:47:36,693 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:47:36,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:47:36,697 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:47:36,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:47:36,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:47:36,698 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:47:36,699 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:47:36,700 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:47:36,701 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:47:36,702 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:47:36,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:47:36,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:47:36,704 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:47:36,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:47:36,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:47:36,706 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:47:36,706 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf [2018-07-25 14:47:36,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:47:36,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:47:36,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 14:47:36,718 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 14:47:36,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:47:36,718 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:47:36,718 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 14:47:36,718 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:47:36,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:47:36,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:47:36,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:47:36,812 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:47:36,813 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:47:36,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl [2018-07-25 14:47:36,814 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl' [2018-07-25 14:47:36,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:47:36,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:47:36,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:47:36,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:47:36,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:47:36,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:47:36,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:47:36,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:47:36,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:47:36,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:36,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:47:36,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:47:36,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:47:36,984 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:47:36,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/1) ... [2018-07-25 14:47:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:47:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:47:37,240 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:47:37,241 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:47:37 BoogieIcfgContainer [2018-07-25 14:47:37,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:47:37,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:47:37,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:47:37,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:47:37,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:47:36" (1/2) ... [2018-07-25 14:47:37,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceddd31 and model type invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:47:37, skipping insertion in model container [2018-07-25 14:47:37,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:47:37" (2/2) ... [2018-07-25 14:47:37,252 INFO L112 eAbstractionObserver]: Analyzing ICFG invert_string.i_4.bpl [2018-07-25 14:47:37,262 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:47:37,271 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:47:37,319 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:47:37,320 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:47:37,321 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:47:37,321 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:47:37,321 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:47:37,321 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:47:37,321 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:47:37,322 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:47:37,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:47:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 14:47:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 14:47:37,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:47:37,349 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 14:47:37,350 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:47:37,356 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-07-25 14:47:37,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:47:37,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:47:37,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 14:47:37,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 14:47:37,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 14:47:37,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:47:37,551 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-25 14:47:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:47:37,617 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-07-25 14:47:37,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:47:37,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-07-25 14:47:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:47:37,640 INFO L225 Difference]: With dead ends: 12 [2018-07-25 14:47:37,640 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 14:47:37,645 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 14:47:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 14:47:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 14:47:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 14:47:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 14:47:37,682 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 14:47:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:47:37,683 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 14:47:37,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 14:47:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 14:47:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 14:47:37,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:47:37,685 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:47:37,685 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:47:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 149049733, now seen corresponding path program 1 times [2018-07-25 14:47:37,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:47:38,392 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-07-25 14:47:40,219 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-07-25 14:47:43,147 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-07-25 14:47:48,755 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-07-25 14:47:57,396 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-07-25 14:48:08,085 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2018-07-25 14:48:20,600 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2018-07-25 14:48:38,643 WARN L169 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2018-07-25 14:49:07,012 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2018-07-25 14:49:48,820 WARN L169 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2018-07-25 14:50:52,183 WARN L169 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 Received shutdown request... [2018-07-25 14:51:55,479 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 14:51:55,488 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 14:51:55,488 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 02:51:55 BoogieIcfgContainer [2018-07-25 14:51:55,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 14:51:55,490 INFO L168 Benchmark]: Toolchain (without parser) took 258589.35 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -415.8 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 446.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2018-07-25 14:51:55,492 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:51:55,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:51:55,493 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:51:55,493 INFO L168 Benchmark]: RCFGBuilder took 257.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 14:51:55,494 INFO L168 Benchmark]: TraceAbstraction took 258246.21 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -415.8 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 435.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-07-25 14:51:55,499 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 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 257.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258246.21 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -415.8 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 435.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 80). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 43 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 258.1s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s 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/invert_string.i_4.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-51-55-512.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/invert_string.i_4.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_14-51-55-512.csv Completed graceful shutdown