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/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:35:24,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:35:24,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:35:24,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:35:24,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:35:24,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:35:24,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:35:24,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:35:24,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:35:24,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:35:24,807 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:35:24,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:35:24,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:35:24,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:35:24,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:35:24,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:35:24,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:35:24,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:35:24,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:35:24,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:35:24,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:35:24,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:35:24,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:35:24,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:35:24,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:35:24,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:35:24,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:35:24,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:35:24,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:35:24,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:35:24,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:35:24,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:35:24,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:35:24,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:35:24,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:35:24,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:35:24,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:35:24,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:35:24,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:35:24,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:35:24,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:35:24,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:35:24,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:35:24,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:35:24,906 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:35:24,907 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:35:24,908 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl [2019-08-05 10:35:24,909 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/GeometricalIntegerCake.bpl' [2019-08-05 10:35:24,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:35:24,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:35:24,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:35:24,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:35:24,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:35:24,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:24,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:24,979 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:35:24,980 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:35:24,980 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:35:24,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:35:24,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:35:24,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:35:24,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:35:24,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:24,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/1) ... [2019-08-05 10:35:25,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:35:25,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:35:25,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:35:25,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:35:25,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (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 10:35:25,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:35:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:35:25,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:35:25,354 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:35:25,354 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:35:25,356 INFO L202 PluginConnector]: Adding new model GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:35:25 BoogieIcfgContainer [2019-08-05 10:35:25,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:35:25,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:35:25,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:35:25,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:35:25,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:35:24" (1/2) ... [2019-08-05 10:35:25,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11086ac0 and model type GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:35:25, skipping insertion in model container [2019-08-05 10:35:25,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GeometricalIntegerCake.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:35:25" (2/2) ... [2019-08-05 10:35:25,364 INFO L109 eAbstractionObserver]: Analyzing ICFG GeometricalIntegerCake.bpl [2019-08-05 10:35:25,373 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:35:25,380 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 10:35:25,394 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 10:35:25,418 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:35:25,418 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:35:25,419 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:35:25,419 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:35:25,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:35:25,419 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:35:25,419 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:35:25,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:35:25,420 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:35:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:35:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:35:25,450 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:25,452 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:35:25,455 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:25,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:25,462 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-08-05 10:35:25,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:25,546 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:35:25,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:35:25,631 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 10:35:25,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:35:25,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:35:25,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:35:25,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:35:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:35:25,677 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-08-05 10:35:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:35:25,808 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-05 10:35:25,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:35:25,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:35:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:35:25,822 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:35:25,822 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:35:25,824 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 10:35:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:35:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:35:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:35:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:35:25,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2019-08-05 10:35:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:35:25,858 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:35:25,859 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:35:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:35:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:35:25,859 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:25,860 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:35:25,860 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash 926592, now seen corresponding path program 1 times [2019-08-05 10:35:25,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:25,886 WARN L254 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:35:25,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:35:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:35:26,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:35:26,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:35:26,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:35:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:35:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:35:26,019 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:35:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:35:26,079 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-05 10:35:26,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:35:26,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-08-05 10:35:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:35:26,081 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:35:26,081 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 10:35:26,082 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:35:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 10:35:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-05 10:35:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:35:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:35:26,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2019-08-05 10:35:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:35:26,085 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:35:26,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:35:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:35:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:35:26,086 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:26,087 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2019-08-05 10:35:26,087 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash 890456061, now seen corresponding path program 2 times [2019-08-05 10:35:26,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:26,107 WARN L254 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:35:26,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:35:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:35:26,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:35:26,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:35:26,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:35:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:35:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:35:26,459 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-05 10:35:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:35:27,888 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-08-05 10:35:27,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:35:27,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:35:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:35:27,890 INFO L225 Difference]: With dead ends: 11 [2019-08-05 10:35:27,890 INFO L226 Difference]: Without dead ends: 11 [2019-08-05 10:35:27,891 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:35:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-08-05 10:35:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-08-05 10:35:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:35:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:35:27,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2019-08-05 10:35:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:35:27,894 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:35:27,894 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:35:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:35:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:35:27,895 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:27,895 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 1, 1] [2019-08-05 10:35:27,896 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1029783866, now seen corresponding path program 3 times [2019-08-05 10:35:27,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:27,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-05 10:35:27,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:35:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:35:28,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:35:28,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:35:28,189 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:35:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:35:28,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:35:28,190 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-08-05 10:35:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:35:28,614 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-08-05 10:35:28,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 10:35:28,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-08-05 10:35:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:35:28,615 INFO L225 Difference]: With dead ends: 13 [2019-08-05 10:35:28,617 INFO L226 Difference]: Without dead ends: 13 [2019-08-05 10:35:28,617 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:35:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-08-05 10:35:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-08-05 10:35:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-08-05 10:35:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-08-05 10:35:28,623 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-08-05 10:35:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:35:28,623 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-08-05 10:35:28,623 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:35:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-08-05 10:35:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:35:28,624 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:28,624 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 1, 1] [2019-08-05 10:35:28,624 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1779818295, now seen corresponding path program 4 times [2019-08-05 10:35:28,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:28,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-05 10:35:28,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:35:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:35:41,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:35:41,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 10:35:41,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-08-05 10:35:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-08-05 10:35:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2019-08-05 10:35:41,153 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2019-08-05 10:35:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:35:45,419 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-08-05 10:35:45,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:35:45,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-08-05 10:35:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:35:45,421 INFO L225 Difference]: With dead ends: 15 [2019-08-05 10:35:45,421 INFO L226 Difference]: Without dead ends: 15 [2019-08-05 10:35:45,422 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2019-08-05 10:35:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-08-05 10:35:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-08-05 10:35:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-08-05 10:35:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-08-05 10:35:45,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-08-05 10:35:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:35:45,425 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-08-05 10:35:45,425 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-08-05 10:35:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-08-05 10:35:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-08-05 10:35:45,426 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:35:45,426 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 1, 1] [2019-08-05 10:35:45,426 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:35:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:35:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1008398836, now seen corresponding path program 5 times [2019-08-05 10:35:45,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:35:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:35:45,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 16 conjunts are in the unsatisfiable core [2019-08-05 10:35:45,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:36:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:36:03,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:36:03,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-08-05 10:36:03,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-08-05 10:36:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-08-05 10:36:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-08-05 10:36:03,613 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2019-08-05 10:36:35,837 WARN L193 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) stderr output: (error "out of memory") [2019-08-05 10:36:35,839 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:122) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:660) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:264) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:712) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:625) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:467) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:119) ... 28 more [2019-08-05 10:36:35,844 INFO L168 Benchmark]: Toolchain (without parser) took 70897.72 ms. Allocated memory was 141.0 MB in the beginning and 176.7 MB in the end (delta: 35.7 MB). Free memory was 109.4 MB in the beginning and 71.0 MB in the end (delta: 38.4 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,846 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 141.0 MB. Free memory was 109.4 MB in the beginning and 107.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,848 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 ms. Allocated memory is still 141.0 MB. Free memory was 107.4 MB in the beginning and 106.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,849 INFO L168 Benchmark]: RCFGBuilder took 342.48 ms. Allocated memory is still 141.0 MB. Free memory was 106.3 MB in the beginning and 96.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,850 INFO L168 Benchmark]: TraceAbstraction took 70484.48 ms. Allocated memory was 141.0 MB in the beginning and 176.7 MB in the end (delta: 35.7 MB). Free memory was 96.7 MB in the beginning and 71.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:36:35,861 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 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 141.0 MB. Free memory was 109.4 MB in the beginning and 107.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.50 ms. Allocated memory is still 141.0 MB. Free memory was 107.4 MB in the beginning and 106.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.48 ms. Allocated memory is still 141.0 MB. Free memory was 106.3 MB in the beginning and 96.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 70484.48 ms. Allocated memory was 141.0 MB in the beginning and 176.7 MB in the end (delta: 35.7 MB). Free memory was 96.7 MB in the beginning and 71.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:122) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...