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/20181015-LoopsPathprograms/half_true-unreach-call_true-termination.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 12:35:08,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 12:35:08,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 12:35:08,639 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 12:35:08,639 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 12:35:08,640 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 12:35:08,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 12:35:08,647 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 12:35:08,648 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 12:35:08,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 12:35:08,652 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 12:35:08,677 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 12:35:08,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 12:35:08,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 12:35:08,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 12:35:08,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 12:35:08,688 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 12:35:08,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 12:35:08,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 12:35:08,689 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 12:35:08,689 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 12:35:08,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 12:35:08,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 12:35:08,690 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 12:35:08,690 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 12:35:08,692 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 12:35:08,693 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 12:35:08,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 12:35:08,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 12:35:08,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 12:35:08,779 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 12:35:08,780 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 12:35:08,780 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/half_true-unreach-call_true-termination.i_4.bpl [2018-10-15 12:35:08,781 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/half_true-unreach-call_true-termination.i_4.bpl' [2018-10-15 12:35:08,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 12:35:08,844 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 12:35:08,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 12:35:08,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 12:35:08,845 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 12:35:08,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/1) ... [2018-10-15 12:35:08,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 12:35:08,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 12:35:08,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 12:35:08,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 12:35:08,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (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 12:35:08,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 12:35:08,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 12:35:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 12:35:09,408 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 12:35:09,409 INFO L202 PluginConnector]: Adding new model half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:35:09 BoogieIcfgContainer [2018-10-15 12:35:09,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 12:35:09,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 12:35:09,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 12:35:09,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 12:35:09,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:08" (1/2) ... [2018-10-15 12:35:09,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d518670 and model type half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:35:09, skipping insertion in model container [2018-10-15 12:35:09,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:35:09" (2/2) ... [2018-10-15 12:35:09,418 INFO L112 eAbstractionObserver]: Analyzing ICFG half_true-unreach-call_true-termination.i_4.bpl [2018-10-15 12:35:09,429 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 12:35:09,437 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 12:35:09,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 12:35:09,488 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 12:35:09,489 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 12:35:09,489 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 12:35:09,489 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 12:35:09,489 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 12:35:09,489 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 12:35:09,490 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 12:35:09,490 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 12:35:09,490 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 12:35:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-15 12:35:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-15 12:35:09,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:09,518 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:09,519 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:09,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash 270064784, now seen corresponding path program 1 times [2018-10-15 12:35:09,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:10,475 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-15 12:35:10,525 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 12:35:10,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:35:10,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-15 12:35:10,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-15 12:35:10,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-15 12:35:10,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-15 12:35:10,549 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 9 states. [2018-10-15 12:35:10,740 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-10-15 12:35:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:11,150 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-10-15 12:35:11,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 12:35:11,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-15 12:35:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:11,166 INFO L225 Difference]: With dead ends: 49 [2018-10-15 12:35:11,166 INFO L226 Difference]: Without dead ends: 44 [2018-10-15 12:35:11,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-15 12:35:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-15 12:35:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2018-10-15 12:35:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-15 12:35:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-10-15 12:35:11,208 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2018-10-15 12:35:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:11,208 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-10-15 12:35:11,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-15 12:35:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-10-15 12:35:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-15 12:35:11,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:11,210 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] [2018-10-15 12:35:11,211 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:11,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 263030495, now seen corresponding path program 1 times [2018-10-15 12:35:11,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:11,526 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 6 [2018-10-15 12:35:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:11,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:11,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-15 12:35:11,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-15 12:35:11,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-15 12:35:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-15 12:35:11,691 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2018-10-15 12:35:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:11,820 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-10-15 12:35:11,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 12:35:11,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-10-15 12:35:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:11,823 INFO L225 Difference]: With dead ends: 36 [2018-10-15 12:35:11,824 INFO L226 Difference]: Without dead ends: 36 [2018-10-15 12:35:11,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-15 12:35:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-15 12:35:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-10-15 12:35:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-15 12:35:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-10-15 12:35:11,836 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 21 [2018-10-15 12:35:11,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:11,836 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-10-15 12:35:11,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-15 12:35:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-10-15 12:35:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-15 12:35:11,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:11,839 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:11,839 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:11,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:11,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1262614000, now seen corresponding path program 2 times [2018-10-15 12:35:11,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-15 12:35:11,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:35:11,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 12:35:11,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 12:35:11,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 12:35:11,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 12:35:11,950 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 3 states. [2018-10-15 12:35:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:12,012 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-10-15 12:35:12,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 12:35:12,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-15 12:35:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:12,014 INFO L225 Difference]: With dead ends: 39 [2018-10-15 12:35:12,014 INFO L226 Difference]: Without dead ends: 39 [2018-10-15 12:35:12,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 12:35:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-15 12:35:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-10-15 12:35:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-15 12:35:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-15 12:35:12,020 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2018-10-15 12:35:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:12,021 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-15 12:35:12,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 12:35:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-15 12:35:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-15 12:35:12,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:12,022 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 12:35:12,023 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:12,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1098433588, now seen corresponding path program 1 times [2018-10-15 12:35:12,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:12,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:12,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-15 12:35:12,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-15 12:35:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-15 12:35:12,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-10-15 12:35:12,605 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 14 states. [2018-10-15 12:35:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:13,247 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-10-15 12:35:13,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-15 12:35:13,248 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2018-10-15 12:35:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:13,251 INFO L225 Difference]: With dead ends: 56 [2018-10-15 12:35:13,251 INFO L226 Difference]: Without dead ends: 51 [2018-10-15 12:35:13,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2018-10-15 12:35:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-15 12:35:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-10-15 12:35:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-15 12:35:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-10-15 12:35:13,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2018-10-15 12:35:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:13,258 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-10-15 12:35:13,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-15 12:35:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-10-15 12:35:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-15 12:35:13,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:13,260 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:13,261 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:13,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1633446591, now seen corresponding path program 2 times [2018-10-15 12:35:13,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-15 12:35:13,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:13,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-15 12:35:13,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-15 12:35:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-15 12:35:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-10-15 12:35:13,679 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2018-10-15 12:35:14,421 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-15 12:35:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:14,653 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-15 12:35:14,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-15 12:35:14,654 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2018-10-15 12:35:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:14,655 INFO L225 Difference]: With dead ends: 44 [2018-10-15 12:35:14,656 INFO L226 Difference]: Without dead ends: 44 [2018-10-15 12:35:14,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2018-10-15 12:35:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-15 12:35:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-10-15 12:35:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-15 12:35:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-15 12:35:14,662 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 37 [2018-10-15 12:35:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:14,663 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-15 12:35:14,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-15 12:35:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-15 12:35:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-15 12:35:14,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:14,665 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:14,665 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:14,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1331266032, now seen corresponding path program 3 times [2018-10-15 12:35:14,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-15 12:35:15,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:15,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-15 12:35:15,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-15 12:35:15,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-15 12:35:15,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2018-10-15 12:35:15,203 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 18 states. [2018-10-15 12:35:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:15,855 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-15 12:35:15,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-15 12:35:15,855 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2018-10-15 12:35:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:15,856 INFO L225 Difference]: With dead ends: 41 [2018-10-15 12:35:15,857 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 12:35:15,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2018-10-15 12:35:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 12:35:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 12:35:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 12:35:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 12:35:15,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-10-15 12:35:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:15,859 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 12:35:15,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-15 12:35:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 12:35:15,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 12:35:15,865 INFO L202 PluginConnector]: Adding new model half_true-unreach-call_true-termination.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:35:15 BoogieIcfgContainer [2018-10-15 12:35:15,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 12:35:15,866 INFO L168 Benchmark]: Toolchain (without parser) took 7022.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 425.6 MB). Peak memory consumption was 425.6 MB. Max. memory is 7.1 GB. [2018-10-15 12:35:15,867 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 12:35:15,868 INFO L168 Benchmark]: Boogie Preprocessor took 50.25 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 12:35:15,868 INFO L168 Benchmark]: RCFGBuilder took 513.38 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 12:35:15,869 INFO L168 Benchmark]: TraceAbstraction took 6454.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.5 MB). Peak memory consumption was 404.5 MB. Max. memory is 7.1 GB. [2018-10-15 12:35:15,873 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 0.19 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 50.25 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 513.38 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. * TraceAbstraction took 6454.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.5 MB). Peak memory consumption was 404.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: 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, 26 locations, 1 error locations. SAFE Result, 6.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 169 SDslu, 452 SDs, 0 SdLazy, 706 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, 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, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 42141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 12/73 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/half_true-unreach-call_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_12-35-15-884.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_true-unreach-call_true-termination.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_12-35-15-884.csv Received shutdown request...