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/gascake/GasCakeWithJohoFractions01InvariantCheck.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:16:37,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:16:37,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:16:37,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:16:37,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:16:37,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:16:37,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:16:37,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:16:37,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:16:37,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:16:37,798 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:16:37,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:16:37,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:16:37,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:16:37,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:16:37,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:16:37,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:16:37,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:16:37,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:16:37,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:16:37,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:16:37,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:16:37,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:16:37,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:16:37,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:16:37,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:16:37,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:16:37,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:16:37,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:16:37,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:16:37,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:16:37,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:16:37,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:16:37,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:16:37,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:16:37,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:16:37,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:16:37,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:16:37,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:16:37,875 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:16:37,875 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:16:37,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/gascake/GasCakeWithJohoFractions01InvariantCheck.bpl [2019-08-05 11:16:37,876 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/gascake/GasCakeWithJohoFractions01InvariantCheck.bpl' [2019-08-05 11:16:37,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:16:37,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:16:37,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:16:37,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:16:37,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:16:37,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,945 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:16:37,945 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:16:37,946 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:16:37,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:16:37,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:16:37,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:16:37,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:16:37,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/1) ... [2019-08-05 11:16:37,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:16:37,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:16:37,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:16:37,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:16:37,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (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 11:16:38,037 INFO L124 BoogieDeclarations]: Specification and implementation of procedure holdsInitially given in one single declaration [2019-08-05 11:16:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure holdsInitially [2019-08-05 11:16:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure holdsInitially [2019-08-05 11:16:38,038 INFO L124 BoogieDeclarations]: Specification and implementation of procedure isInductive given in one single declaration [2019-08-05 11:16:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure isInductive [2019-08-05 11:16:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isInductive [2019-08-05 11:16:38,039 INFO L124 BoogieDeclarations]: Specification and implementation of procedure isSafe given in one single declaration [2019-08-05 11:16:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure isSafe [2019-08-05 11:16:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isSafe [2019-08-05 11:16:38,395 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:16:38,395 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:16:38,397 INFO L202 PluginConnector]: Adding new model GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:16:38 BoogieIcfgContainer [2019-08-05 11:16:38,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:16:38,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:16:38,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:16:38,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:16:38,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:16:37" (1/2) ... [2019-08-05 11:16:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26517672 and model type GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:16:38, skipping insertion in model container [2019-08-05 11:16:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:16:38" (2/2) ... [2019-08-05 11:16:38,411 INFO L109 eAbstractionObserver]: Analyzing ICFG GasCakeWithJohoFractions01InvariantCheck.bpl [2019-08-05 11:16:38,423 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:16:38,450 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 11:16:38,485 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 11:16:38,524 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:16:38,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:16:38,525 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:16:38,525 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:16:38,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:16:38,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:16:38,526 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:16:38,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:16:38,526 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:16:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-08-05 11:16:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:16:38,550 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:16:38,551 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:16:38,553 INFO L418 AbstractCegarLoop]: === Iteration 1 === [holdsInitiallyErr0ASSERT_VIOLATIONASSERT, isInductiveErr0ASSERT_VIOLATIONASSERT, isSafeErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:16:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:16:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1090, now seen corresponding path program 1 times [2019-08-05 11:16:38,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:16:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:16:38,641 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 11:16:38,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:16:38,778 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 11:16:38,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:16:38,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:16:38,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:16:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:16:38,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:16:38,799 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-08-05 11:16:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:16:38,828 INFO L93 Difference]: Finished difference Result 11 states and 8 transitions. [2019-08-05 11:16:38,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:16:38,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:16:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:16:38,842 INFO L225 Difference]: With dead ends: 11 [2019-08-05 11:16:38,842 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:16:38,844 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 11:16:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:16:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:16:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:16:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4 transitions. [2019-08-05 11:16:38,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 4 transitions. Word has length 2 [2019-08-05 11:16:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:16:38,876 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 4 transitions. [2019-08-05 11:16:38,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:16:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 4 transitions. [2019-08-05 11:16:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:16:38,877 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:16:38,878 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:16:38,878 INFO L418 AbstractCegarLoop]: === Iteration 2 === [holdsInitiallyErr0ASSERT_VIOLATIONASSERT, isInductiveErr0ASSERT_VIOLATIONASSERT, isSafeErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:16:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:16:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1218, now seen corresponding path program 1 times [2019-08-05 11:16:38,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:16:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:16:38,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:16:38,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:16:38,952 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 11:16:38,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:16:38,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:16:38,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:16:38,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:16:38,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:16:38,955 INFO L87 Difference]: Start difference. First operand 6 states and 4 transitions. Second operand 3 states. [2019-08-05 11:16:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:16:38,956 INFO L93 Difference]: Finished difference Result 5 states and 3 transitions. [2019-08-05 11:16:38,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:16:38,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:16:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:16:38,957 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:16:38,957 INFO L226 Difference]: Without dead ends: 3 [2019-08-05 11:16:38,958 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 11:16:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states. [2019-08-05 11:16:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2019-08-05 11:16:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-08-05 11:16:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2 transitions. [2019-08-05 11:16:38,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states and 2 transitions. Word has length 2 [2019-08-05 11:16:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:16:38,960 INFO L475 AbstractCegarLoop]: Abstraction has 3 states and 2 transitions. [2019-08-05 11:16:38,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:16:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states and 2 transitions. [2019-08-05 11:16:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:16:38,961 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:16:38,961 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:16:38,962 INFO L418 AbstractCegarLoop]: === Iteration 3 === [holdsInitiallyErr0ASSERT_VIOLATIONASSERT, isInductiveErr0ASSERT_VIOLATIONASSERT, isSafeErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:16:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:16:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 11:16:38,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:16:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:16:38,969 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:16:38,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:16:39,023 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 11:16:39,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:16:39,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:16:39,024 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:16:39,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:16:39,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:16:39,025 INFO L87 Difference]: Start difference. First operand 3 states and 2 transitions. Second operand 3 states. [2019-08-05 11:16:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:16:39,025 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-08-05 11:16:39,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:16:39,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:16:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:16:39,026 INFO L225 Difference]: With dead ends: 2 [2019-08-05 11:16:39,026 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:16:39,027 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 11:16:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:16:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:16:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:16:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:16:39,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2019-08-05 11:16:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:16:39,029 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:16:39,029 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:16:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:16:39,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:16:39,034 INFO L202 PluginConnector]: Adding new model GasCakeWithJohoFractions01InvariantCheck.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:16:39 BoogieIcfgContainer [2019-08-05 11:16:39,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:16:39,037 INFO L168 Benchmark]: Toolchain (without parser) took 1122.50 ms. Allocated memory is still 134.7 MB. Free memory was 110.9 MB in the beginning and 68.7 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:16:39,038 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 111.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:16:39,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 134.7 MB. Free memory was 110.5 MB in the beginning and 108.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:16:39,040 INFO L168 Benchmark]: Boogie Preprocessor took 18.60 ms. Allocated memory is still 134.7 MB. Free memory was 108.8 MB in the beginning and 107.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:16:39,041 INFO L168 Benchmark]: RCFGBuilder took 429.68 ms. Allocated memory is still 134.7 MB. Free memory was 107.5 MB in the beginning and 96.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:16:39,042 INFO L168 Benchmark]: TraceAbstraction took 636.12 ms. Allocated memory is still 134.7 MB. Free memory was 96.1 MB in the beginning and 68.7 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:16:39,046 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 134.7 MB. Free memory is still 111.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 134.7 MB. Free memory was 110.5 MB in the beginning and 108.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.60 ms. Allocated memory is still 134.7 MB. Free memory was 108.8 MB in the beginning and 107.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 7.1 GB. * RCFGBuilder took 429.68 ms. Allocated memory is still 134.7 MB. Free memory was 107.5 MB in the beginning and 96.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 636.12 ms. Allocated memory is still 134.7 MB. Free memory was 96.1 MB in the beginning and 68.7 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 3 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 1 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...