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/count_by_1_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 14:57:20,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 14:57:20,680 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 14:57:20,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 14:57:20,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 14:57:20,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 14:57:20,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 14:57:20,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 14:57:20,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 14:57:20,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 14:57:20,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-15 14:57:20,700 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-15 14:57:20,701 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-15 14:57:20,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-15 14:57:20,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-15 14:57:20,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-15 14:57:20,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-15 14:57:20,707 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-15 14:57:20,709 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-15 14:57:20,711 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-15 14:57:20,712 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-15 14:57:20,713 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-15 14:57:20,716 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-15 14:57:20,725 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 14:57:20,736 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 14:57:20,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 14:57:20,738 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 14:57:20,738 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 14:57:20,738 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 14:57:20,738 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 14:57:20,739 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 14:57:20,739 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 14:57:20,739 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 14:57:20,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 14:57:20,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 14:57:20,740 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 14:57:20,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 14:57:20,742 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 14:57:20,742 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 14:57:20,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 14:57:20,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 14:57:20,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 14:57:20,823 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 14:57:20,823 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 14:57:20,824 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-10-15 14:57:20,825 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-10-15 14:57:20,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 14:57:20,880 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 14:57:20,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 14:57:20,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 14:57:20,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 14:57:20,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/1) ... [2018-10-15 14:57:20,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 14:57:20,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 14:57:20,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 14:57:20,933 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 14:57:20,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (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 14:57:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 14:57:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 14:57:21,415 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 14:57:21,416 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:21 BoogieIcfgContainer [2018-10-15 14:57:21,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 14:57:21,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 14:57:21,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 14:57:21,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 14:57:21,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 02:57:20" (1/2) ... [2018-10-15 14:57:21,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a10c635 and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:21, skipping insertion in model container [2018-10-15 14:57:21,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:21" (2/2) ... [2018-10-15 14:57:21,427 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-10-15 14:57:21,435 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 14:57:21,443 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 14:57:21,460 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 14:57:21,487 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 14:57:21,488 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 14:57:21,488 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 14:57:21,488 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 14:57:21,488 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 14:57:21,489 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 14:57:21,489 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 14:57:21,489 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 14:57:21,489 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 14:57:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-15 14:57:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-15 14:57:21,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 14:57:21,515 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 14:57:21,516 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 14:57:21,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 14:57:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2046439952, now seen corresponding path program 1 times [2018-10-15 14:57:21,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 14:57:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 14:57:21,836 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 14:57:21,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 14:57:21,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-15 14:57:21,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 14:57:21,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 14:57:21,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-15 14:57:21,864 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2018-10-15 14:57:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 14:57:22,093 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-15 14:57:22,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 14:57:22,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-15 14:57:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 14:57:22,105 INFO L225 Difference]: With dead ends: 29 [2018-10-15 14:57:22,106 INFO L226 Difference]: Without dead ends: 29 [2018-10-15 14:57:22,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-15 14:57:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-15 14:57:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-10-15 14:57:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-15 14:57:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-15 14:57:22,147 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-10-15 14:57:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 14:57:22,147 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-15 14:57:22,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 14:57:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-15 14:57:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-15 14:57:22,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 14:57:22,149 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 14:57:22,149 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 14:57:22,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 14:57:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2000291277, now seen corresponding path program 1 times [2018-10-15 14:57:22,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 14:57:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 14:57:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 14:57:22,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 14:57:22,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-15 14:57:22,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-15 14:57:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-15 14:57:22,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-15 14:57:22,414 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2018-10-15 14:57:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 14:57:23,001 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-15 14:57:23,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-15 14:57:23,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-10-15 14:57:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 14:57:23,003 INFO L225 Difference]: With dead ends: 37 [2018-10-15 14:57:23,003 INFO L226 Difference]: Without dead ends: 37 [2018-10-15 14:57:23,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2018-10-15 14:57:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-15 14:57:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2018-10-15 14:57:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-15 14:57:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-15 14:57:23,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 21 [2018-10-15 14:57:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 14:57:23,013 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-15 14:57:23,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-15 14:57:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-15 14:57:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-15 14:57:23,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 14:57:23,015 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 14:57:23,015 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 14:57:23,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 14:57:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1262114448, now seen corresponding path program 2 times [2018-10-15 14:57:23,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 14:57:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 14:57:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 14:57:23,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 14:57:23,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-15 14:57:23,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-15 14:57:23,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-15 14:57:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-15 14:57:23,287 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 13 states. [2018-10-15 14:57:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 14:57:23,893 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-15 14:57:23,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-15 14:57:23,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-10-15 14:57:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 14:57:23,895 INFO L225 Difference]: With dead ends: 28 [2018-10-15 14:57:23,895 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 14:57:23,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2018-10-15 14:57:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 14:57:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 14:57:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 14:57:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 14:57:23,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-10-15 14:57:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 14:57:23,898 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 14:57:23,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-15 14:57:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 14:57:23,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 14:57:23,904 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:57:23 BoogieIcfgContainer [2018-10-15 14:57:23,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 14:57:23,905 INFO L168 Benchmark]: Toolchain (without parser) took 3026.68 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 14:57:23,908 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 14:57:23,909 INFO L168 Benchmark]: Boogie Preprocessor took 51.01 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 14:57:23,909 INFO L168 Benchmark]: RCFGBuilder took 484.24 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 14:57:23,911 INFO L168 Benchmark]: TraceAbstraction took 2486.52 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-15 14:57:23,915 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 0.23 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 51.01 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 484.24 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 2486.52 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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, 18 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 125 SDslu, 115 SDs, 0 SdLazy, 109 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/27 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/count_by_1_variant.i_2.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_14-57-23-927.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_14-57-23-927.csv Received shutdown request...