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-z3.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:59:11,472 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:59:11,474 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:59:11,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:59:11,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:59:11,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:59:11,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:59:11,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:59:11,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:59:11,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:59:11,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:59:11,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:59:11,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:59:11,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:59:11,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:59:11,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:59:11,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:59:11,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:59:11,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:59:11,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:59:11,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:59:11,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:59:11,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:59:11,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:59:11,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:59:11,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:59:11,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:59:11,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:59:11,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:59:11,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:59:11,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:59:11,514 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:59:11,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:59:11,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:59:11,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:59:11,517 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:59:11,517 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 13:59:11,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:59:11,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:59:11,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:59:11,527 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 13:59:11,527 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 13:59:11,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:59:11,528 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:59:11,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:59:11,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:59:11,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:59:11,588 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:59:11,589 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:59:11,590 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl [2018-07-25 13:59:11,590 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl' [2018-07-25 13:59:11,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:59:11,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:59:11,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:59:11,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:59:11,648 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:59:11,666 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,681 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:59:11,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:59:11,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:59:11,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:59:11,700 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,700 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,702 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,702 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,705 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,707 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,708 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 01:59:11" (1/1) ... [2018-07-25 13:59:11,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:59:11,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:59:11,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:59:11,711 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:59:11,712 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 01:59:11" (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 13:59:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:59:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:59:12,017 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:59:12,017 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:59:12 BoogieIcfgContainer [2018-07-25 13:59:12,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:59:12,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:59:12,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:59:12,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:59:12,023 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 01:59:11" (1/2) ... [2018-07-25 13:59:12,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74489651 and model type invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:59:12, skipping insertion in model container [2018-07-25 13:59:12,024 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 01:59:12" (2/2) ... [2018-07-25 13:59:12,026 INFO L112 eAbstractionObserver]: Analyzing ICFG invert_string.i_4.bpl [2018-07-25 13:59:12,036 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:59:12,045 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:59:12,096 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:59:12,097 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:59:12,097 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:59:12,098 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 13:59:12,098 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:59:12,098 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:59:12,098 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:59:12,099 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:59:12,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:59:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 13:59:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:59:12,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:59:12,131 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:59:12,132 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:59:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:59:12,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:59:12,447 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:59:12,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:59:12,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:59:12,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:59:12,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:59:12,459 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-25 13:59:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:59:12,539 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-07-25 13:59:12,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:59:12,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-07-25 13:59:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:59:12,553 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:59:12,553 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:59:12,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:59:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:59:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:59:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:59:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:59:12,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:59:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:59:12,590 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:59:12,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:59:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:59:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:59:12,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:59:12,591 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:59:12,591 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:59:12,592 INFO L82 PathProgramCache]: Analyzing trace with hash 149049733, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:59:12,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:59:13,178 WARN L169 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-07-25 13:59:13,814 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-07-25 13:59:19,383 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-07-25 13:59:24,149 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2018-07-25 13:59:33,768 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-07-25 13:59:46,941 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2018-07-25 14:00:06,000 WARN L169 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2018-07-25 14:00:34,297 WARN L169 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2018-07-25 14:01:14,806 WARN L169 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2018-07-25 14:02:11,525 WARN L169 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2018-07-25 14:03:27,672 WARN L169 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 Received shutdown request... [2018-07-25 14:03:48,116 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:03:48,116 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 14:03:48,122 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 14:03:48,122 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 02:03:48 BoogieIcfgContainer [2018-07-25 14:03:48,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 14:03:48,123 INFO L168 Benchmark]: Toolchain (without parser) took 276477.61 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -234.4 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 289.9 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-07-25 14:03:48,125 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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 14:03:48,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.00 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 14:03:48,126 INFO L168 Benchmark]: Boogie Preprocessor took 21.26 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 14:03:48,127 INFO L168 Benchmark]: RCFGBuilder took 306.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 14:03:48,128 INFO L168 Benchmark]: TraceAbstraction took 276103.71 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -234.4 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 268.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-07-25 14:03:48,132 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 0.17 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 41.00 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 21.26 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 306.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 276103.71 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -234.4 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 268.7 MB). Peak memory consumption was 34.4 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, 276.0s 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, 0.1s 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: 0.2s 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-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-03-48-146.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/invert_string.i_4.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_14-03-48-146.csv Completed graceful shutdown