java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/recursive/regression/bpl/TwoContracts.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:07:48,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:07:48,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:07:48,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:07:48,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:07:48,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:07:48,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:07:48,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:07:48,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:07:48,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:07:48,742 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:07:48,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:07:48,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:07:48,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:07:48,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:07:48,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:07:48,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:07:48,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:07:48,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:07:48,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:07:48,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:07:48,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:07:48,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:07:48,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:07:48,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:07:48,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:07:48,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:07:48,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:07:48,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:07:48,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:07:48,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:07:48,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:07:48,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:07:48,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:07:48,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:07:48,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:07:48,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:07:48,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:07:48,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:07:48,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:07:48,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:07:48,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:07:48,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:07:48,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:07:48,828 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:07:48,829 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:07:48,830 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/TwoContracts.bpl [2019-08-05 11:07:48,830 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/TwoContracts.bpl' [2019-08-05 11:07:48,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:07:48,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:07:48,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:48,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:07:48,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:07:48,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,898 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:07:48,898 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:07:48,898 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:07:48,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:48,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:07:48,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:07:48,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:07:48,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/1) ... [2019-08-05 11:07:48,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:07:48,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:07:48,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:07:48,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:07:48,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (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 [2019-08-05 11:07:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure caller [2019-08-05 11:07:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure caller [2019-08-05 11:07:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure callee [2019-08-05 11:07:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure callee [2019-08-05 11:07:49,247 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:07:49,247 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-08-05 11:07:49,249 INFO L202 PluginConnector]: Adding new model TwoContracts.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:49 BoogieIcfgContainer [2019-08-05 11:07:49,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:07:49,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:07:49,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:07:49,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:07:49,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:48" (1/2) ... [2019-08-05 11:07:49,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe90a4 and model type TwoContracts.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:07:49, skipping insertion in model container [2019-08-05 11:07:49,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TwoContracts.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:49" (2/2) ... [2019-08-05 11:07:49,258 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoContracts.bpl [2019-08-05 11:07:49,268 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:07:49,278 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 11:07:49,296 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 11:07:49,329 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:07:49,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:07:49,330 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:07:49,330 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:07:49,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:07:49,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:07:49,331 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:07:49,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:07:49,331 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:07:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-08-05 11:07:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:07:49,353 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:49,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:07:49,356 INFO L418 AbstractCegarLoop]: === Iteration 1 === [callerErr0ASSERT_VIOLATIONASSERT, callerErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:49,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1274, now seen corresponding path program 1 times [2019-08-05 11:07:49,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:07:49,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:07:49,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:07:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:07:49,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:07:49,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:07:49,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:07:49,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:07:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:49,546 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-08-05 11:07:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:07:49,614 INFO L93 Difference]: Finished difference Result 7 states and 5 transitions. [2019-08-05 11:07:49,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:07:49,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:07:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:07:49,635 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:07:49,636 INFO L226 Difference]: Without dead ends: 4 [2019-08-05 11:07:49,639 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2019-08-05 11:07:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2019-08-05 11:07:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-08-05 11:07:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3 transitions. [2019-08-05 11:07:49,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 3 transitions. Word has length 2 [2019-08-05 11:07:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:07:49,679 INFO L475 AbstractCegarLoop]: Abstraction has 4 states and 3 transitions. [2019-08-05 11:07:49,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:07:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2019-08-05 11:07:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:07:49,680 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:49,680 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:07:49,681 INFO L418 AbstractCegarLoop]: === Iteration 2 === [callerErr0ASSERT_VIOLATIONASSERT, callerErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:49,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash 39530, now seen corresponding path program 1 times [2019-08-05 11:07:49,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:07:49,694 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 11:07:49,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:07:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:07:49,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:07:49,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:07:49,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:07:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:07:49,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:49,723 INFO L87 Difference]: Start difference. First operand 4 states and 3 transitions. Second operand 3 states. [2019-08-05 11:07:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:07:49,724 INFO L93 Difference]: Finished difference Result 3 states and 2 transitions. [2019-08-05 11:07:49,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:07:49,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:07:49,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:07:49,725 INFO L225 Difference]: With dead ends: 3 [2019-08-05 11:07:49,725 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:07:49,726 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:07:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:07:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:07:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:07:49,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-08-05 11:07:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:07:49,727 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:07:49,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:07:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:07:49,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:07:49,733 INFO L202 PluginConnector]: Adding new model TwoContracts.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:07:49 BoogieIcfgContainer [2019-08-05 11:07:49,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:07:49,736 INFO L168 Benchmark]: Toolchain (without parser) took 871.66 ms. Allocated memory is still 134.2 MB. Free memory was 109.6 MB in the beginning and 74.5 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,738 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.64 ms. Allocated memory is still 134.2 MB. Free memory was 109.4 MB in the beginning and 107.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,740 INFO L168 Benchmark]: Boogie Preprocessor took 17.62 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 106.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,741 INFO L168 Benchmark]: RCFGBuilder took 318.00 ms. Allocated memory is still 134.2 MB. Free memory was 106.0 MB in the beginning and 95.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,742 INFO L168 Benchmark]: TraceAbstraction took 483.03 ms. Allocated memory is still 134.2 MB. Free memory was 95.5 MB in the beginning and 74.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:49,746 INFO L335 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 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.64 ms. Allocated memory is still 134.2 MB. Free memory was 109.4 MB in the beginning and 107.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.62 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 106.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.00 ms. Allocated memory is still 134.2 MB. Free memory was 106.0 MB in the beginning and 95.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 483.03 ms. Allocated memory is still 134.2 MB. Free memory was 95.5 MB in the beginning and 74.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 2 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 2 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...