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/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:26:01,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:26:01,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:26:01,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-08-05 10:26:01,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:26:01,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:26:01,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:26:01,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:26:01,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:26:01,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:26:01,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:26:01,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:26:01,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:26:01,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:26:01,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:26:01,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:26:01,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:26:01,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:26:01,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:26:01,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:26:01,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:26:01,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:26:01,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:26:01,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:26:01,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:26:01,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:26:01,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:26:01,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:26:01,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:26:01,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:26:01,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:26:01,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:26:01,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:26:01,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:26:01,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:26:01,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:26:01,580 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:26:01,581 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:26:01,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl [2019-08-05 10:26:01,582 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl' [2019-08-05 10:26:01,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:26:01,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:26:01,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:26:01,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:26:01,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:26:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:26:01,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:26:01,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:26:01,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:26:01,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/1) ... [2019-08-05 10:26:01,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:26:01,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:26:01,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:26:01,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:26:01,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (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 10:26:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:26:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:26:02,997 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:26:02,998 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:26:02,999 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:26:02 BoogieIcfgContainer [2019-08-05 10:26:02,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:26:03,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:26:03,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:26:03,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:26:03,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:26:01" (1/2) ... [2019-08-05 10:26:03,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e962c5 and model type pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:26:03, skipping insertion in model container [2019-08-05 10:26:03,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:26:02" (2/2) ... [2019-08-05 10:26:03,007 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl [2019-08-05 10:26:03,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:26:03,023 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:26:03,038 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:26:03,062 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:26:03,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:26:03,063 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:26:03,064 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:26:03,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:26:03,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:26:03,064 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:26:03,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:26:03,065 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:26:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:26:03,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:26:03,088 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:26:03,090 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:26:03,092 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:26:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:26:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1001172, now seen corresponding path program 1 times [2019-08-05 10:26:03,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:26:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:26:03,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-05 10:26:03,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:26:03,470 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:03,561 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 10:26:03,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:26:03,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:26:03,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:26:03,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:26:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:26:03,585 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:26:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:26:03,684 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:26:03,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:26:03,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:26:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:26:03,697 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:26:03,698 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:26:03,700 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:26:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:26:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:26:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:26:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:26:03,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:26:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:26:03,733 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:26:03,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:26:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:26:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:26:03,733 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:26:03,734 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:26:03,734 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:26:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:26:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash 962207787, now seen corresponding path program 1 times [2019-08-05 10:26:03,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:26:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:26:03,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-05 10:26:03,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:26:03,986 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:04,175 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:26:04,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:26:04,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:26:04,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:26:04,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:26:04,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:26:04,259 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:26:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:26:04,504 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:26:04,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:26:04,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:26:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:26:04,506 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:26:04,506 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:26:04,507 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:26:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:26:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:26:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:26:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:26:04,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:26:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:26:04,511 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:26:04,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:26:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:26:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:26:04,511 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:26:04,511 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:26:04,512 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:26:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:26:04,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1263796162, now seen corresponding path program 2 times [2019-08-05 10:26:04,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:26:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:26:04,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjunts are in the unsatisfiable core [2019-08-05 10:26:04,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:26:04,707 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:04,853 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:04,854 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:04,855 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:05,314 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-08-05 10:26:05,317 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:05,364 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:26:05,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:26:05,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 10:26:05,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:26:05,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:26:05,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:26:05,407 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2019-08-05 10:26:05,785 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2019-08-05 10:26:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:26:05,886 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-08-05 10:26:05,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 10:26:05,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-08-05 10:26:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:26:05,888 INFO L225 Difference]: With dead ends: 11 [2019-08-05 10:26:05,888 INFO L226 Difference]: Without dead ends: 11 [2019-08-05 10:26:05,889 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-08-05 10:26:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-08-05 10:26:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-08-05 10:26:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:26:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:26:05,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-05 10:26:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:26:05,892 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:26:05,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:26:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:26:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:26:05,892 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:26:05,893 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-05 10:26:05,893 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:26:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:26:05,893 INFO L82 PathProgramCache]: Analyzing trace with hash -967551591, now seen corresponding path program 3 times [2019-08-05 10:26:05,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:26:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:26:06,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2019-08-05 10:26:06,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:26:06,042 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:06,165 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:26:06,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:26:06,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 10:26:06,218 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:26:06,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:26:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:26:06,218 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-08-05 10:26:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:26:06,372 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-08-05 10:26:06,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 10:26:06,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-08-05 10:26:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:26:06,374 INFO L225 Difference]: With dead ends: 16 [2019-08-05 10:26:06,374 INFO L226 Difference]: Without dead ends: 16 [2019-08-05 10:26:06,375 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-08-05 10:26:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-08-05 10:26:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-08-05 10:26:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-08-05 10:26:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-08-05 10:26:06,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-08-05 10:26:06,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:26:06,378 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-08-05 10:26:06,378 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:26:06,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-08-05 10:26:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-08-05 10:26:06,379 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:26:06,379 INFO L399 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2019-08-05 10:26:06,379 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:26:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:26:06,379 INFO L82 PathProgramCache]: Analyzing trace with hash 926557191, now seen corresponding path program 4 times [2019-08-05 10:26:06,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:26:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:26:06,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:26:06,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:26:06,593 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:06,605 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:26:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-08-05 10:26:06,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:26:06,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:26:06,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:26:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:26:06,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:26:06,695 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-08-05 10:26:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:26:06,711 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 10:26:06,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:26:06,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-08-05 10:26:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:26:06,712 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:26:06,712 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:26:06,712 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:26:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:26:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:26:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:26:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:26:06,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-08-05 10:26:06,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:26:06,713 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:26:06,713 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:26:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:26:06,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:26:06,717 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:26:06 BoogieIcfgContainer [2019-08-05 10:26:06,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:26:06,719 INFO L168 Benchmark]: Toolchain (without parser) took 5070.31 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 110.8 MB in the beginning and 82.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,723 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 113.1 MB in the beginning and 112.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 134.2 MB. Free memory was 110.8 MB in the beginning and 109.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,725 INFO L168 Benchmark]: Boogie Preprocessor took 35.17 ms. Allocated memory is still 134.2 MB. Free memory was 109.0 MB in the beginning and 107.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,727 INFO L168 Benchmark]: RCFGBuilder took 1275.47 ms. Allocated memory was 134.2 MB in the beginning and 170.4 MB in the end (delta: 36.2 MB). Free memory was 107.4 MB in the beginning and 145.5 MB in the end (delta: -38.1 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,728 INFO L168 Benchmark]: TraceAbstraction took 3717.23 ms. Allocated memory was 170.4 MB in the beginning and 197.1 MB in the end (delta: 26.7 MB). Free memory was 145.5 MB in the beginning and 82.8 MB in the end (delta: 62.7 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:26:06,735 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 113.1 MB in the beginning and 112.9 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 38.20 ms. Allocated memory is still 134.2 MB. Free memory was 110.8 MB in the beginning and 109.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.17 ms. Allocated memory is still 134.2 MB. Free memory was 109.0 MB in the beginning and 107.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1275.47 ms. Allocated memory was 134.2 MB in the beginning and 170.4 MB in the end (delta: 36.2 MB). Free memory was 107.4 MB in the beginning and 145.5 MB in the end (delta: -38.1 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3717.23 ms. Allocated memory was 170.4 MB in the beginning and 197.1 MB in the end (delta: 26.7 MB). Free memory was 145.5 MB in the beginning and 82.8 MB in the end (delta: 62.7 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 463]: 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, 6 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 27 SDs, 0 SdLazy, 86 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 8 QuantifiedInterpolants, 4806 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1151 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 30/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...