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/Interactive/input/boogie/stmt-multiassign-bug1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:26,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:26,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:26,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:26,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:26,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:26,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:26,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:26,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:26,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:26,576 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:26,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:26,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:26,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:26,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:26,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:26,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:26,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:26,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:26,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:26,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:26,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:26,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:26,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:26,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 09:52:26,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 09:52:26,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 09:52:26,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 09:52:26,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 09:52:26,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 09:52:26,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:26,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:26,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:26,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:26,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:26,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:26,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:26,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:26,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:26,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:26,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:26,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:26,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:26,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:26,669 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:26,670 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:26,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Interactive/input/boogie/stmt-multiassign-bug1.bpl [2019-08-05 09:52:26,671 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Interactive/input/boogie/stmt-multiassign-bug1.bpl' [2019-08-05 09:52:26,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:26,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:26,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:26,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:26,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:26,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:26,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:26,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:26,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:26,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/1) ... [2019-08-05 09:52:26,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:26,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:26,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:26,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:26,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (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 09:52:26,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 09:52:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 09:52:26,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 09:52:27,139 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 09:52:27,139 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 09:52:27,141 INFO L202 PluginConnector]: Adding new model stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:27 BoogieIcfgContainer [2019-08-05 09:52:27,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:27,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:27,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:27,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:27,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:26" (1/2) ... [2019-08-05 09:52:27,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6bbc68 and model type stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:27, skipping insertion in model container [2019-08-05 09:52:27,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:27" (2/2) ... [2019-08-05 09:52:27,151 INFO L109 eAbstractionObserver]: Analyzing ICFG stmt-multiassign-bug1.bpl [2019-08-05 09:52:27,160 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:27,168 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 09:52:27,185 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 09:52:27,215 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:27,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:27,216 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:27,216 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:27,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:27,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:27,217 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:27,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:27,217 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-08-05 09:52:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 09:52:27,240 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:27,241 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 09:52:27,247 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:27,255 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 09:52:27,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:27,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 1 conjunts are in the unsatisfiable core [2019-08-05 09:52:27,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:27,344 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 09:52:27,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:27,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 09:52:27,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-08-05 09:52:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-08-05 09:52:27,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 09:52:27,364 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 2 states. [2019-08-05 09:52:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:27,376 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-08-05 09:52:27,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-08-05 09:52:27,377 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 2 [2019-08-05 09:52:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:27,387 INFO L225 Difference]: With dead ends: 7 [2019-08-05 09:52:27,387 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 09:52:27,389 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 09:52:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 09:52:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 09:52:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 09:52:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-08-05 09:52:27,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 2 [2019-08-05 09:52:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:27,420 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-08-05 09:52:27,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-08-05 09:52:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-08-05 09:52:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 09:52:27,421 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:27,422 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 09:52:27,422 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:27,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:27,423 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2019-08-05 09:52:27,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:27,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 09:52:27,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:27,479 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 09:52:27,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:27,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 09:52:27,482 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:27,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:27,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:27,483 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 3 states. [2019-08-05 09:52:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:27,502 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-08-05 09:52:27,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:27,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 09:52:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:27,504 INFO L225 Difference]: With dead ends: 5 [2019-08-05 09:52:27,504 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 09:52:27,505 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 09:52:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 09:52:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 09:52:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 09:52:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2019-08-05 09:52:27,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2019-08-05 09:52:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:27,508 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2019-08-05 09:52:27,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2019-08-05 09:52:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 09:52:27,509 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:27,509 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 09:52:27,510 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:27,510 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2019-08-05 09:52:27,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:27,543 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 09:52:27,567 INFO L202 PluginConnector]: Adding new model stmt-multiassign-bug1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:27 BoogieIcfgContainer [2019-08-05 09:52:27,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:27,571 INFO L168 Benchmark]: Toolchain (without parser) took 870.41 ms. Allocated memory is still 141.6 MB. Free memory was 111.2 MB in the beginning and 76.3 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:27,572 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:27,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.95 ms. Allocated memory is still 141.6 MB. Free memory was 111.2 MB in the beginning and 109.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:27,575 INFO L168 Benchmark]: Boogie Preprocessor took 18.79 ms. Allocated memory is still 141.6 MB. Free memory was 109.4 MB in the beginning and 108.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:27,576 INFO L168 Benchmark]: RCFGBuilder took 387.28 ms. Allocated memory is still 141.6 MB. Free memory was 108.1 MB in the beginning and 99.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:27,577 INFO L168 Benchmark]: TraceAbstraction took 424.48 ms. Allocated memory is still 141.6 MB. Free memory was 98.7 MB in the beginning and 76.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:27,585 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 0.20 ms. Allocated memory is still 141.6 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.95 ms. Allocated memory is still 141.6 MB. Free memory was 111.2 MB in the beginning and 109.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.79 ms. Allocated memory is still 141.6 MB. Free memory was 109.4 MB in the beginning and 108.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 387.28 ms. Allocated memory is still 141.6 MB. Free memory was 108.1 MB in the beginning and 99.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 424.48 ms. Allocated memory is still 141.6 MB. Free memory was 98.7 MB in the beginning and 76.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: assertion can be violated assertion can be violated We found a FailurePath: [L8] assume x >= 0 && x <= 10; [L9] y := 3; VAL [x=4, y=3] [L10] assert true; [L11] b, z := x <= y, 5; VAL [b=false, x=4, y=3, z=5] [L13] assert z == 5; VAL [b=false, x=4, y=3, z=5] [L14] assert x < 3; VAL [b=false, x=4, y=3, z=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 3 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 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 incorrect! Received shutdown request...