java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:22:33,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:22:33,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:22:33,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:22:33,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:22:33,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:22:33,585 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:22:33,588 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:22:33,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:22:33,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:22:33,595 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-23 14:22:33,625 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:22:33,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:22:33,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:22:33,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:22:33,638 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:22:33,638 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:22:33,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:22:33,639 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:22:33,639 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:22:33,640 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:22:33,641 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:22:33,642 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:22:33,642 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:22:33,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:22:33,642 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:22:33,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:22:33,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:22:33,643 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:22:33,643 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:22:33,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:22:33,644 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:22:33,645 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:22:33,645 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:22:33,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:22:33,696 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:22:33,700 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:22:33,701 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:22:33,701 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:22:33,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:22:33,875 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:22:33,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:22:33,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:22:33,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:22:33,886 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:22:33,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:22:33" (1/1) ... [2018-01-23 14:22:33,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c6c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:33, skipping insertion in model container [2018-01-23 14:22:33,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:22:33" (1/1) ... [2018-01-23 14:22:33,904 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:22:33,941 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:22:34,053 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:22:34,069 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:22:34,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34 WrapperNode [2018-01-23 14:22:34,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:22:34,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:22:34,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:22:34,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:22:34,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... [2018-01-23 14:22:34,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:22:34,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:22:34,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:22:34,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:22:34,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:22:34,155 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:22:34,156 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:22:34,156 INFO L136 BoogieDeclarations]: Found implementation of procedure subseq [2018-01-23 14:22:34,156 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:22:34,156 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:22:34,157 INFO L128 BoogieDeclarations]: Found specification of procedure subseq [2018-01-23 14:22:34,157 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:22:34,157 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:22:34,157 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:22:34,353 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:22:34,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:22:34 BoogieIcfgContainer [2018-01-23 14:22:34,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:22:34,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:22:34,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:22:34,357 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:22:34,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:22:33" (1/3) ... [2018-01-23 14:22:34,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:22:34, skipping insertion in model container [2018-01-23 14:22:34,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:22:34" (2/3) ... [2018-01-23 14:22:34,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:22:34, skipping insertion in model container [2018-01-23 14:22:34,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:22:34" (3/3) ... [2018-01-23 14:22:34,361 INFO L105 eAbstractionObserver]: Analyzing ICFG subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:22:34,367 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:22:34,374 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:22:34,420 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:22:34,420 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:22:34,420 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:22:34,420 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:22:34,420 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:22:34,421 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:22:34,421 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:22:34,421 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:22:34,422 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:22:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-23 14:22:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:22:34,448 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:34,449 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:22:34,449 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:22:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-23 14:22:34,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:34,457 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:34,515 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,515 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:34,515 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:22:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:22:34,577 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:22:34,585 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:22:34,592 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:22:34,593 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:22:34,593 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:22:34,593 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:22:34,593 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:22:34,593 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:22:34,593 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:22:34,593 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == subseqErr0EnsuresViolation======== [2018-01-23 14:22:34,593 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:22:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-23 14:22:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-23 14:22:34,597 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:34,597 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:22:34,597 INFO L371 AbstractCegarLoop]: === Iteration 1 === [subseqErr0EnsuresViolation]=== [2018-01-23 14:22:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash 52339367, now seen corresponding path program 1 times [2018-01-23 14:22:34,597 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:34,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:34,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,599 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:34,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:22:34,639 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:22:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:22:34,692 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:22:34,692 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:22:34,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:22:34,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:22:34,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:34,711 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-23 14:22:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:22:34,808 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-23 14:22:34,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:22:34,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-23 14:22:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:22:34,819 INFO L225 Difference]: With dead ends: 59 [2018-01-23 14:22:34,819 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:22:34,823 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:34,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:22:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:22:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:22:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:22:34,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-23 14:22:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:22:34,849 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:22:34,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:22:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:22:34,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:22:34,852 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:22:34,852 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:22:34,852 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:22:34,852 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:22:34,852 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:22:34,852 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:22:34,852 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:22:34,852 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:22:34,853 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:22:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-23 14:22:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:22:34,855 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:34,855 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:22:34,855 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:22:34,856 INFO L82 PathProgramCache]: Analyzing trace with hash -138026163, now seen corresponding path program 1 times [2018-01-23 14:22:34,856 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:34,856 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:34,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,857 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:34,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:22:34,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:22:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:22:34,898 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:22:34,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:22:34,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:22:34,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:22:34,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:34,899 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-23 14:22:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:22:34,904 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-23 14:22:34,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:22:34,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-23 14:22:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:22:34,907 INFO L225 Difference]: With dead ends: 59 [2018-01-23 14:22:34,907 INFO L226 Difference]: Without dead ends: 40 [2018-01-23 14:22:34,908 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-23 14:22:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-23 14:22:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-23 14:22:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-01-23 14:22:34,917 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2018-01-23 14:22:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:22:34,917 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-01-23 14:22:34,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:22:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-01-23 14:22:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-23 14:22:34,918 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:34,918 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:22:34,918 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:22:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1839552329, now seen corresponding path program 1 times [2018-01-23 14:22:34,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:34,919 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:34,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:34,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:22:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:22:34,980 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:22:34,989 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:22:34,994 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:22:34,995 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:22:34,995 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:22:35,006 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:22:35,006 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:22:35,006 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:22:35,006 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:22:35,007 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:22:35,007 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:22:35,007 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:22:35,007 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:22:35,007 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:22:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-23 14:22:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:22:35,009 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:35,009 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:22:35,009 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:22:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2100699955, now seen corresponding path program 1 times [2018-01-23 14:22:35,010 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:35,010 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:35,010 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:35,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:35,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:22:35,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:22:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:22:35,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:22:35,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:22:35,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:22:35,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:22:35,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:35,041 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-23 14:22:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:22:35,045 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-23 14:22:35,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:22:35,045 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-23 14:22:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:22:35,047 INFO L225 Difference]: With dead ends: 59 [2018-01-23 14:22:35,047 INFO L226 Difference]: Without dead ends: 38 [2018-01-23 14:22:35,047 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:22:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-23 14:22:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-23 14:22:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-23 14:22:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-23 14:22:35,053 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2018-01-23 14:22:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:22:35,053 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-23 14:22:35,054 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:22:35,054 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-23 14:22:35,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-23 14:22:35,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:22:35,055 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:22:35,055 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:22:35,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1875178679, now seen corresponding path program 1 times [2018-01-23 14:22:35,055 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:22:35,056 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:22:35,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:35,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:22:35,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:22:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:22:35,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:22:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:22:35,334 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:22:35,334 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:22:35,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:22:35,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:22:35,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:22:35,335 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2018-01-23 14:22:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:22:35,594 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-01-23 14:22:35,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-23 14:22:35,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-23 14:22:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:22:35,596 INFO L225 Difference]: With dead ends: 38 [2018-01-23 14:22:35,596 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:22:35,597 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:22:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:22:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:22:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:22:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:22:35,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-01-23 14:22:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:22:35,599 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:22:35,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:22:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:22:35,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:22:35,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:22:35 BoogieIcfgContainer [2018-01-23 14:22:35,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:22:35,604 INFO L168 Benchmark]: Toolchain (without parser) took 1728.20 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 263.3 MB in the beginning and 367.5 MB in the end (delta: -104.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 5.3 GB. [2018-01-23 14:22:35,605 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:22:35,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.81 ms. Allocated memory is still 305.1 MB. Free memory was 262.3 MB in the beginning and 252.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-23 14:22:35,606 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 305.1 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-23 14:22:35,606 INFO L168 Benchmark]: RCFGBuilder took 247.36 ms. Allocated memory is still 305.1 MB. Free memory was 250.1 MB in the beginning and 233.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:22:35,606 INFO L168 Benchmark]: TraceAbstraction took 1247.68 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 233.1 MB in the beginning and 368.9 MB in the end (delta: -135.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. [2018-01-23 14:22:35,608 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 195.81 ms. Allocated memory is still 305.1 MB. Free memory was 262.3 MB in the beginning and 252.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 305.1 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 247.36 ms. Allocated memory is still 305.1 MB. Free memory was 250.1 MB in the beginning and 233.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1247.68 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 233.1 MB in the beginning and 368.9 MB in the end (delta: -135.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: subseqErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 VAL [length1=1, length2=0] [L559] COND TRUE length2 < 1 [L560] length2 = 1 VAL [length1=1, length2=1] [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}] [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L564] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L565] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}] [L566] CALL, EXPR subseq(nondetString1,nondetString2) VAL [s={3:0}, t={5:0}] [L542] char *ps = s; [L543] char *pt = t; VAL [ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] EXPR, FCALL \read(*ps) VAL [\read(*ps)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] *ps != '\0' && *pt != '\0' VAL [*ps != '\0' && *pt != '\0'=0, \read(*ps)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L544] COND FALSE !(*ps != '\0' && *pt != '\0') [L550] EXPR, FCALL \read(*pt) VAL [\read(*pt)=0, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L550] COND TRUE *pt == '\0' [L550] RET return 1; VAL [\result=1, ps={3:0}, pt={5:0}, s={3:0}, s={3:0}, t={5:0}, t={5:0}] [L566] EXPR subseq(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={5:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={5:0}, subseq(nondetString1,nondetString2)=1] [L566] return subseq(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 44 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 22 SDslu, 26 SDs, 0 SdLazy, 109 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 6286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-22-35-619.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-22-35-619.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-22-35-619.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-22-35-619.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-22-35-619.csv Received shutdown request...