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/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181015-LoopsPathprograms/nested9_true-unreach-call_true-termination.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 13:04:54,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 13:04:54,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 13:04:54,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 13:04:54,954 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 13:04:54,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 13:04:54,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 13:04:54,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 13:04:54,973 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 13:04:54,974 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 13:04:54,974 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 13:04:54,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 13:04:54,975 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 13:04:54,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 13:04:54,975 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 13:04:54,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 13:04:54,976 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 13:04:54,976 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 13:04:54,977 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 13:04:54,977 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 13:04:55,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 13:04:55,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 13:04:55,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 13:04:55,050 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 13:04:55,050 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 13:04:55,051 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/nested9_true-unreach-call_true-termination.i_3.bpl [2018-10-15 13:04:55,051 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/nested9_true-unreach-call_true-termination.i_3.bpl' [2018-10-15 13:04:55,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 13:04:55,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 13:04:55,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 13:04:55,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 13:04:55,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 13:04:55,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 13:04:55,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 13:04:55,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 13:04:55,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 13:04:55,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (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 13:04:55,242 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 13:04:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 13:04:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 13:04:55,640 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 13:04:55,641 INFO L202 PluginConnector]: Adding new model nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:55 BoogieIcfgContainer [2018-10-15 13:04:55,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 13:04:55,642 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 13:04:55,642 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 13:04:55,643 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 13:04:55,647 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:55" (1/1) ... [2018-10-15 13:04:55,652 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 13:04:55,671 INFO L202 PluginConnector]: Adding new model nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:04:55 BasicIcfg [2018-10-15 13:04:55,671 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 13:04:55,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 13:04:55,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 13:04:55,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 13:04:55,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:55" (1/3) ... [2018-10-15 13:04:55,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c0eab9 and model type nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:55, skipping insertion in model container [2018-10-15 13:04:55,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:55" (2/3) ... [2018-10-15 13:04:55,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c0eab9 and model type nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:55, skipping insertion in model container [2018-10-15 13:04:55,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:04:55" (3/3) ... [2018-10-15 13:04:55,681 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9_true-unreach-call_true-termination.i_3.bplleft_unchanged_by_heapseparator [2018-10-15 13:04:55,691 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 13:04:55,700 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 13:04:55,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 13:04:55,749 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 13:04:55,750 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 13:04:55,750 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 13:04:55,750 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 13:04:55,750 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 13:04:55,750 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 13:04:55,750 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 13:04:55,751 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 13:04:55,751 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 13:04:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-15 13:04:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-15 13:04:55,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:04:55,790 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, 1, 1] [2018-10-15 13:04:55,791 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:04:55,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:04:55,798 INFO L82 PathProgramCache]: Analyzing trace with hash 238020264, now seen corresponding path program 1 times [2018-10-15 13:04:55,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:04:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:04:56,002 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 13:04:56,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 13:04:56,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-15 13:04:56,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 13:04:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 13:04:56,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-15 13:04:56,028 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2018-10-15 13:04:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:04:56,215 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-10-15 13:04:56,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-15 13:04:56,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-15 13:04:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:04:56,230 INFO L225 Difference]: With dead ends: 45 [2018-10-15 13:04:56,230 INFO L226 Difference]: Without dead ends: 45 [2018-10-15 13:04:56,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-15 13:04:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-15 13:04:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-10-15 13:04:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-15 13:04:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-10-15 13:04:56,271 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 33 [2018-10-15 13:04:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:04:56,272 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-10-15 13:04:56,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 13:04:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-10-15 13:04:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-15 13:04:56,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:04:56,274 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-10-15 13:04:56,274 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:04:56,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:04:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1308201293, now seen corresponding path program 1 times [2018-10-15 13:04:56,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:04:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:04:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-15 13:04:56,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:04:56,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-15 13:04:56,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-15 13:04:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-15 13:04:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-15 13:04:56,492 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 7 states. [2018-10-15 13:04:57,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:04:57,030 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2018-10-15 13:04:57,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-15 13:04:57,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-10-15 13:04:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:04:57,034 INFO L225 Difference]: With dead ends: 56 [2018-10-15 13:04:57,034 INFO L226 Difference]: Without dead ends: 56 [2018-10-15 13:04:57,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-15 13:04:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-15 13:04:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2018-10-15 13:04:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-15 13:04:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-10-15 13:04:57,043 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 39 [2018-10-15 13:04:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:04:57,043 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-10-15 13:04:57,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-15 13:04:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-10-15 13:04:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-15 13:04:57,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:04:57,046 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-10-15 13:04:57,046 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:04:57,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:04:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1268646444, now seen corresponding path program 1 times [2018-10-15 13:04:57,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:04:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:04:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-15 13:04:57,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:04:57,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-15 13:04:57,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-15 13:04:57,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-15 13:04:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-15 13:04:57,265 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 9 states. [2018-10-15 13:04:58,168 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2018-10-15 13:04:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:04:58,178 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-10-15 13:04:58,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-15 13:04:58,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2018-10-15 13:04:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:04:58,182 INFO L225 Difference]: With dead ends: 46 [2018-10-15 13:04:58,182 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 13:04:58,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-15 13:04:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 13:04:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 13:04:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 13:04:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 13:04:58,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-10-15 13:04:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:04:58,185 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 13:04:58,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-15 13:04:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 13:04:58,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 13:04:58,190 INFO L202 PluginConnector]: Adding new model nested9_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:58 BasicIcfg [2018-10-15 13:04:58,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 13:04:58,191 INFO L168 Benchmark]: Toolchain (without parser) took 3068.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 126.9 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. [2018-10-15 13:04:58,193 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-10-15 13:04:58,194 INFO L168 Benchmark]: Boogie Preprocessor took 43.42 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. [2018-10-15 13:04:58,195 INFO L168 Benchmark]: RCFGBuilder took 473.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 13:04:58,196 INFO L168 Benchmark]: IcfgTransformer took 29.66 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 13:04:58,196 INFO L168 Benchmark]: TraceAbstraction took 2518.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-15 13:04:58,201 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 0.18 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 43.42 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 473.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. * IcfgTransformer took 29.66 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. * TraceAbstraction took 2518.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: 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, 42 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 89 SDslu, 293 SDs, 0 SdLazy, 168 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 12370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 6/11 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/nested9_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_13-04-58-213.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested9_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_13-04-58-213.csv Received shutdown request...