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/count_up_down_true-unreach-call_true-termination.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 12:26:41,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 12:26:41,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 12:26:41,556 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 12:26:41,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 12:26:41,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 12:26:41,559 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 12:26:41,561 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 12:26:41,562 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 12:26:41,563 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 12:26:41,564 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 12:26:41,595 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 12:26:41,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 12:26:41,616 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 12:26:41,617 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 12:26:41,617 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 12:26:41,617 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 12:26:41,617 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 12:26:41,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 12:26:41,618 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 12:26:41,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 12:26:41,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 12:26:41,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 12:26:41,619 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 12:26:41,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 12:26:41,620 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 12:26:41,621 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 12:26:41,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 12:26:41,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 12:26:41,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 12:26:41,716 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 12:26:41,716 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 12:26:41,717 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/count_up_down_true-unreach-call_true-termination.i_3.bpl [2018-10-15 12:26:41,717 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/count_up_down_true-unreach-call_true-termination.i_3.bpl' [2018-10-15 12:26:41,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 12:26:41,776 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 12:26:41,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 12:26:41,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 12:26:41,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 12:26:41,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/1) ... [2018-10-15 12:26:41,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 12:26:41,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 12:26:41,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 12:26:41,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 12:26:41,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (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 12:26:41,906 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 12:26:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 12:26:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 12:26:42,213 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 12:26:42,214 INFO L202 PluginConnector]: Adding new model count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:26:42 BoogieIcfgContainer [2018-10-15 12:26:42,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 12:26:42,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 12:26:42,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 12:26:42,218 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 12:26:42,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:26:41" (1/2) ... [2018-10-15 12:26:42,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7e9e34 and model type count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:26:42, skipping insertion in model container [2018-10-15 12:26:42,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:26:42" (2/2) ... [2018-10-15 12:26:42,224 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_true-unreach-call_true-termination.i_3.bpl [2018-10-15 12:26:42,244 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 12:26:42,263 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 12:26:42,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 12:26:42,338 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 12:26:42,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 12:26:42,340 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 12:26:42,340 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 12:26:42,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 12:26:42,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 12:26:42,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 12:26:42,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 12:26:42,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 12:26:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-15 12:26:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-15 12:26:42,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:26:42,388 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:26:42,389 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:26:42,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:26:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash -495131632, now seen corresponding path program 1 times [2018-10-15 12:26:42,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:26:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:26:42,747 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 12:26:42,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:26:42,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-15 12:26:42,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-15 12:26:42,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-15 12:26:42,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-15 12:26:42,775 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2018-10-15 12:26:43,194 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-15 12:26:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:26:43,274 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-15 12:26:43,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 12:26:43,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-15 12:26:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:26:43,287 INFO L225 Difference]: With dead ends: 26 [2018-10-15 12:26:43,287 INFO L226 Difference]: Without dead ends: 22 [2018-10-15 12:26:43,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-15 12:26:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-15 12:26:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-10-15 12:26:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-15 12:26:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-15 12:26:43,326 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2018-10-15 12:26:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:26:43,327 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-15 12:26:43,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-15 12:26:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-15 12:26:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-15 12:26:43,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:26:43,328 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:26:43,329 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:26:43,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:26:43,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2144310075, now seen corresponding path program 1 times [2018-10-15 12:26:43,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:26:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:26:43,812 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-15 12:26:43,983 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 12:26:43,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:26:43,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-15 12:26:43,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-15 12:26:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-15 12:26:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-10-15 12:26:43,987 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 12 states. [2018-10-15 12:26:44,313 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-15 12:26:44,688 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2018-10-15 12:26:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:26:45,024 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-15 12:26:45,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 12:26:45,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-10-15 12:26:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:26:45,026 INFO L225 Difference]: With dead ends: 33 [2018-10-15 12:26:45,026 INFO L226 Difference]: Without dead ends: 29 [2018-10-15 12:26:45,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-10-15 12:26:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-15 12:26:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-10-15 12:26:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-15 12:26:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-15 12:26:45,034 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2018-10-15 12:26:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:26:45,035 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-15 12:26:45,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-15 12:26:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-15 12:26:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-15 12:26:45,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:26:45,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:26:45,038 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:26:45,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:26:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash 45911472, now seen corresponding path program 2 times [2018-10-15 12:26:45,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:26:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:26:45,409 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-15 12:26:45,736 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-15 12:26:46,129 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 15 [2018-10-15 12:26:46,244 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-10-15 12:26:46,420 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-10-15 12:26:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:26:48,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:26:48,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-15 12:26:48,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-15 12:26:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-15 12:26:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-10-15 12:26:48,292 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 17 states. [2018-10-15 12:26:51,321 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-10-15 12:26:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:26:52,440 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-15 12:26:52,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-15 12:26:52,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2018-10-15 12:26:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:26:52,442 INFO L225 Difference]: With dead ends: 27 [2018-10-15 12:26:52,442 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 12:26:52,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2018-10-15 12:26:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 12:26:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 12:26:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 12:26:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 12:26:52,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-10-15 12:26:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:26:52,445 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 12:26:52,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-15 12:26:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 12:26:52,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 12:26:52,451 INFO L202 PluginConnector]: Adding new model count_up_down_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:26:52 BoogieIcfgContainer [2018-10-15 12:26:52,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 12:26:52,452 INFO L168 Benchmark]: Toolchain (without parser) took 10677.09 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 264.3 MB). Peak memory consumption was 264.3 MB. Max. memory is 7.1 GB. [2018-10-15 12:26:52,453 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 12:26:52,454 INFO L168 Benchmark]: Boogie Preprocessor took 51.90 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 12:26:52,455 INFO L168 Benchmark]: RCFGBuilder took 384.89 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 12:26:52,456 INFO L168 Benchmark]: TraceAbstraction took 10236.22 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 243.2 MB). Peak memory consumption was 243.2 MB. Max. memory is 7.1 GB. [2018-10-15 12:26:52,459 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.90 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 384.89 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10236.22 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 243.2 MB). Peak memory consumption was 243.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 21 locations, 1 error locations. SAFE Result, 10.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 5.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 59 SDslu, 171 SDs, 0 SdLazy, 300 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 16466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 6/10 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_up_down_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_12-26-52-470.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_up_down_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_12-26-52-470.csv Received shutdown request...