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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:06:29,623 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:06:29,626 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:06:29,638 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:06:29,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:06:29,639 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:06:29,641 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:06:29,643 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:06:29,645 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:06:29,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:06:29,646 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-15 15:06:29,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-15 15:06:29,648 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-15 15:06:29,649 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-15 15:06:29,650 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-15 15:06:29,651 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-15 15:06:29,652 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-15 15:06:29,654 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-15 15:06:29,656 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-15 15:06:29,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-15 15:06:29,659 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-15 15:06:29,660 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-15 15:06:29,662 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-15 15:06:29,662 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-15 15:06:29,663 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-15 15:06:29,664 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-15 15:06:29,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-15 15:06:29,665 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-15 15:06:29,666 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-15 15:06:29,667 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-15 15:06:29,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-15 15:06:29,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-15 15:06:29,671 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:06:29,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:06:29,681 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:06:29,682 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:06:29,682 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:06:29,682 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:06:29,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:06:29,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:06:29,683 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:06:29,684 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:06:29,684 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:06:29,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:06:29,684 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:06:29,684 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:06:29,685 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:06:29,685 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:06:29,745 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:06:29,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:06:29,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:06:29,764 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:06:29,765 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:06:29,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl [2018-10-15 15:06:29,766 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl' [2018-10-15 15:06:29,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:06:29,825 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:06:29,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:06:29,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:06:29,826 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:06:29,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/1) ... [2018-10-15 15:06:29,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:06:29,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:06:29,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:06:29,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:06:29,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (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 [2018-10-15 15:06:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:06:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:06:30,552 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:06:30,553 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:30 BoogieIcfgContainer [2018-10-15 15:06:30,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:06:30,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:06:30,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:06:30,559 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:06:30,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:29" (1/2) ... [2018-10-15 15:06:30,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5e8fe8 and model type nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:30, skipping insertion in model container [2018-10-15 15:06:30,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:30" (2/2) ... [2018-10-15 15:06:30,563 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.c_4.bpl [2018-10-15 15:06:30,574 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:06:30,584 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:06:30,604 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:06:30,640 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:06:30,641 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:06:30,641 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:06:30,641 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:06:30,641 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:06:30,641 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:06:30,642 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:06:30,642 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:06:30,642 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:06:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-10-15 15:06:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-15 15:06:30,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:30,685 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:30,687 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:30,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash 625037497, now seen corresponding path program 1 times [2018-10-15 15:06:30,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:06:30,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:30,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:30,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:30,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:30,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:30,962 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2018-10-15 15:06:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:31,067 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-15 15:06:31,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:31,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-15 15:06:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:31,083 INFO L225 Difference]: With dead ends: 43 [2018-10-15 15:06:31,083 INFO L226 Difference]: Without dead ends: 43 [2018-10-15 15:06:31,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-15 15:06:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-15 15:06:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-15 15:06:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-15 15:06:31,126 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 31 [2018-10-15 15:06:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:31,126 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-15 15:06:31,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-15 15:06:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-15 15:06:31,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:31,128 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:31,129 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:31,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:31,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1172744288, now seen corresponding path program 1 times [2018-10-15 15:06:31,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:06:31,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:06:31,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-15 15:06:31,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-15 15:06:31,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-15 15:06:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-15 15:06:31,286 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 6 states. [2018-10-15 15:06:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:31,636 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-15 15:06:31,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 15:06:31,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-10-15 15:06:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:31,638 INFO L225 Difference]: With dead ends: 50 [2018-10-15 15:06:31,639 INFO L226 Difference]: Without dead ends: 50 [2018-10-15 15:06:31,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:06:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-15 15:06:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-10-15 15:06:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-15 15:06:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-15 15:06:31,647 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 38 [2018-10-15 15:06:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:31,648 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-15 15:06:31,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-15 15:06:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-15 15:06:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-15 15:06:31,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:31,650 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:31,650 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:31,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:31,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1539684057, now seen corresponding path program 2 times [2018-10-15 15:06:31,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:06:31,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:31,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-15 15:06:31,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 15:06:31,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 15:06:31,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:06:31,760 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 5 states. [2018-10-15 15:06:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:31,869 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2018-10-15 15:06:31,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-15 15:06:31,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-10-15 15:06:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:31,871 INFO L225 Difference]: With dead ends: 29 [2018-10-15 15:06:31,871 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:06:31,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:06:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:06:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:06:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:06:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:06:31,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-10-15 15:06:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:31,875 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:06:31,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 15:06:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:06:31,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:06:31,880 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:06:31 BoogieIcfgContainer [2018-10-15 15:06:31,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:06:31,881 INFO L168 Benchmark]: Toolchain (without parser) took 2057.28 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-15 15:06:31,883 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-15 15:06:31,884 INFO L168 Benchmark]: Boogie Preprocessor took 50.66 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. [2018-10-15 15:06:31,884 INFO L168 Benchmark]: RCFGBuilder took 677.02 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:06:31,885 INFO L168 Benchmark]: TraceAbstraction took 1325.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-15 15:06:31,889 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 0.25 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 50.66 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 677.02 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1325.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 63]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 42 SDslu, 145 SDs, 0 SdLazy, 68 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, 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, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 6338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 11/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.c_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-06-31-901.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.c_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-06-31-901.csv Received shutdown request...