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/string_concat-noarr.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:15:34,982 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:15:34,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:15:34,998 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:15:34,998 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:15:34,999 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:15:35,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:15:35,006 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:15:35,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:15:35,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:15:35,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:15:35,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:15:35,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:15:35,016 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:15:35,020 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:15:35,021 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:15:35,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:15:35,033 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:15:35,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:15:35,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:15:35,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:15:35,046 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:15:35,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:15:35,050 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:15:35,050 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:15:35,051 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:15:35,052 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:15:35,053 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:15:35,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:15:35,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:15:35,061 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:15:35,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:15:35,062 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:15:35,062 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:15:35,064 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:15:35,065 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:15:35,066 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 14:15:35,081 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:15:35,082 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:15:35,084 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:15:35,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:15:35,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 14:15:35,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:15:35,087 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:15:35,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:15:35,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:15:35,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:15:35,189 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:15:35,189 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:15:35,190 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/string_concat-noarr.i_3.bpl [2018-07-25 14:15:35,190 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/string_concat-noarr.i_3.bpl' [2018-07-25 14:15:35,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:15:35,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:15:35,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:15:35,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:15:35,265 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:15:35,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:15:35,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:15:35,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:15:35,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:15:35,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/1) ... [2018-07-25 14:15:35,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:15:35,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:15:35,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:15:35,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:15:35,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (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 14:15:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 14:15:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 14:15:35,557 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 14:15:35,557 INFO L202 PluginConnector]: Adding new model string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:15:35 BoogieIcfgContainer [2018-07-25 14:15:35,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:15:35,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:15:35,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:15:35,562 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:15:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:15:35" (1/2) ... [2018-07-25 14:15:35,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbdb578 and model type string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:15:35, skipping insertion in model container [2018-07-25 14:15:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:15:35" (2/2) ... [2018-07-25 14:15:35,565 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i_3.bpl [2018-07-25 14:15:35,575 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:15:35,583 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 14:15:35,630 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:15:35,631 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:15:35,631 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:15:35,632 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:15:35,632 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:15:35,632 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:15:35,632 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:15:35,632 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:15:35,633 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:15:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 14:15:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 14:15:35,656 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:35,657 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 14:15:35,658 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, 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 14:15:35,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:15:35,913 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-25 14:15:36,200 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:15:36,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 14:15:36,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 14:15:36,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 14:15:36,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 14:15:36,213 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 14:15:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:15:36,261 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 14:15:36,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 14:15:36,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 14:15:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:15:36,275 INFO L225 Difference]: With dead ends: 10 [2018-07-25 14:15:36,275 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 14:15:36,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 14:15:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 14:15:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 14:15:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 14:15:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 14:15:36,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 14:15:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:15:36,311 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 14:15:36,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 14:15:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 14:15:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 14:15:36,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:15:36,312 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 14:15:36,312 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:15:36,313 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, 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) [2018-07-25 14:15:36,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:15:37,131 WARN L169 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-07-25 14:15:37,450 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-07-25 14:15:38,495 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-07-25 14:15:39,883 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-07-25 14:15:42,429 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-07-25 14:15:47,371 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-07-25 14:15:50,766 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-07-25 14:15:56,542 WARN L169 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-07-25 14:16:01,601 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-07-25 14:16:07,932 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-07-25 14:16:15,821 WARN L169 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-07-25 14:16:25,224 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-07-25 14:16:36,937 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-07-25 14:16:50,791 WARN L169 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-07-25 14:17:07,441 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-07-25 14:17:27,162 WARN L169 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-07-25 14:17:50,597 WARN L169 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-07-25 14:18:18,027 WARN L169 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2018-07-25 14:18:49,678 WARN L169 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-07-25 14:19:26,246 WARN L169 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-07-25 14:20:08,191 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 Received shutdown request... [2018-07-25 14:20:09,205 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 14:20:09,206 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 14:20:09,211 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 14:20:09,212 INFO L202 PluginConnector]: Adding new model string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 02:20:09 BoogieIcfgContainer [2018-07-25 14:20:09,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 14:20:09,212 INFO L168 Benchmark]: Toolchain (without parser) took 273950.07 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -185.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 184.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:20:09,214 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 14:20:09,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 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 14:20:09,215 INFO L168 Benchmark]: Boogie Preprocessor took 20.46 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 14:20:09,215 INFO L168 Benchmark]: RCFGBuilder took 228.87 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 14:20:09,216 INFO L168 Benchmark]: TraceAbstraction took 273653.33 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -185.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 163.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 14:20:09,220 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 0.21 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 42.97 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 20.46 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 228.87 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 273653.33 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -185.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 163.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 53). Cancelled while BasicCegarLoop was analyzing trace of length 7 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 81 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 273.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 1 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: 0.4s 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/string_concat-noarr.i_3.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-20-09-231.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_concat-noarr.i_3.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_14-20-09-231.csv Completed graceful shutdown