java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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-ff8eab6 [2018-09-26 09:07:26,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:07:26,570 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:07:26,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:07:26,588 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:07:26,590 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:07:26,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:07:26,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:07:26,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:07:26,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:07:26,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:07:26,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:07:26,600 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:07:26,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:07:26,602 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:07:26,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:07:26,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:07:26,609 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:07:26,611 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:07:26,612 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:07:26,613 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:07:26,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:07:26,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:07:26,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:07:26,618 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:07:26,619 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:07:26,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:07:26,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:07:26,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:07:26,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:07:26,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:07:26,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:07:26,624 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:07:26,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:07:26,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:07:26,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:07:26,626 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:07:26,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:07:26,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:07:26,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:07:26,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:07:26,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:07:26,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:26,640 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:07:26,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:07:26,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:07:26,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:07:26,704 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:07:26,705 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:07:26,705 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/string_concat-noarr.i_3.bpl [2018-09-26 09:07:26,706 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/string_concat-noarr.i_3.bpl' [2018-09-26 09:07:26,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:07:26,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:07:26,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:07:26,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:07:26,759 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:07:26,777 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,790 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:07:26,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:07:26,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:07:26,800 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:07:26,811 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,812 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,813 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,813 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,818 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,821 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,822 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 26.09 09:07:26" (1/1) ... [2018-09-26 09:07:26,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:07:26,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:07:26,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:07:26,825 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:07:26,826 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 26.09 09:07:26" (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 [2018-09-26 09:07:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 09:07:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 09:07:27,198 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 09:07:27,199 INFO L202 PluginConnector]: Adding new model string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:07:27 BoogieIcfgContainer [2018-09-26 09:07:27,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:07:27,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:07:27,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:07:27,206 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:07:27,206 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 26.09 09:07:26" (1/2) ... [2018-09-26 09:07:27,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce654e0 and model type string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:07:27, skipping insertion in model container [2018-09-26 09:07:27,208 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 26.09 09:07:27" (2/2) ... [2018-09-26 09:07:27,210 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i_3.bpl [2018-09-26 09:07:27,223 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:07:27,235 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:07:27,283 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:07:27,284 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:07:27,284 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:07:27,284 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:07:27,284 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:07:27,284 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:07:27,285 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:07:27,285 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:07:27,285 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:07:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 09:07:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 09:07:27,311 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:27,312 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 09:07:27,313 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:27,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:27,321 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 [2018-09-26 09:07:27,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:27,544 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-26 09:07:27,837 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:07:27,838 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 09:07:27,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 09:07:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 09:07:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-26 09:07:27,853 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-09-26 09:07:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:07:27,943 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 09:07:27,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:07:27,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-26 09:07:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:07:27,956 INFO L225 Difference]: With dead ends: 10 [2018-09-26 09:07:27,956 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 09:07:27,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-26 09:07:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 09:07:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 09:07:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 09:07:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 09:07:27,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 09:07:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:07:27,995 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 09:07:27,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 09:07:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 09:07:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 09:07:27,996 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:07:27,996 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 09:07:27,997 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:07:27,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:07:27,997 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:07:28,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:07:28,804 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-09-26 09:07:29,127 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-09-26 09:07:30,244 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-09-26 09:07:31,684 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-09-26 09:07:34,341 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-09-26 09:07:39,115 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-09-26 09:07:48,407 WARN L178 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-09-26 09:07:53,403 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-09-26 09:07:59,790 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-09-26 09:08:07,493 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-09-26 09:08:17,120 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-09-26 09:08:28,666 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2018-09-26 09:08:42,487 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2018-09-26 09:08:59,066 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2018-09-26 09:09:18,693 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-09-26 09:09:41,664 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-09-26 09:10:08,196 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2018-09-26 09:10:39,249 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2018-09-26 09:11:15,018 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2018-09-26 09:11:56,334 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 Received shutdown request... [2018-09-26 09:12:00,791 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:12:00,791 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 09:12:00,797 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 09:12:00,798 INFO L202 PluginConnector]: Adding new model string_concat-noarr.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:12:00 BoogieIcfgContainer [2018-09-26 09:12:00,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 09:12:00,799 INFO L168 Benchmark]: Toolchain (without parser) took 274043.99 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -190.3 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 168.8 MB). Peak memory consumption was 393.1 MB. Max. memory is 7.1 GB. [2018-09-26 09:12:00,800 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-09-26 09:12:00,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.70 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. [2018-09-26 09:12:00,802 INFO L168 Benchmark]: Boogie Preprocessor took 24.86 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. [2018-09-26 09:12:00,802 INFO L168 Benchmark]: RCFGBuilder took 374.47 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. [2018-09-26 09:12:00,803 INFO L168 Benchmark]: TraceAbstraction took 273597.92 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -190.3 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 147.6 MB). Peak memory consumption was 372.0 MB. Max. memory is 7.1 GB. [2018-09-26 09:12:00,808 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.70 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 24.86 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 374.47 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 273597.92 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -190.3 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 147.6 MB). Peak memory consumption was 372.0 MB. 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, 0.1s 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, 0.3s 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-0-2018-09-26_09-12-00-820.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-0-2018-09-26_09-12-00-820.csv Completed graceful shutdown