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_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:26:10,503 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:26:10,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:26:10,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:26:10,519 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:26:10,520 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:26:10,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:26:10,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:26:10,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:26:10,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:26:10,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-20 23:26:10,548 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:26:10,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:26:10,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:26:10,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:26:10,559 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:26:10,560 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:26:10,560 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:26:10,560 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:26:10,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:26:10,561 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:26:10,561 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:26:10,561 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:26:10,561 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:26:10,562 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:26:10,563 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:26:10,563 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:26:10,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:26:10,563 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:26:10,563 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:26:10,564 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:26:10,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:26:10,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:26:10,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:26:10,564 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:26:10,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:26:10,566 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:26:10,566 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:26:10,567 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:26:10,567 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:26:10,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:26:10,611 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:26:10,614 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:26:10,615 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:26:10,616 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:26:10,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:26:10,770 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:26:10,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:26:10,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:26:10,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:26:10,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:26:10,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:10,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9aff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10, skipping insertion in model container [2018-01-20 23:26:10,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:10,797 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:26:10,834 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:26:10,949 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:26:10,967 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:26:10,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10 WrapperNode [2018-01-20 23:26:10,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:26:10,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:26:10,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:26:10,976 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:26:10,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:10,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (1/1) ... [2018-01-20 23:26:11,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:26:11,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:26:11,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:26:11,017 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:26:11,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (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 [2018-01-20 23:26:11,100 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:26:11,100 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:26:11,100 INFO L136 BoogieDeclarations]: Found implementation of procedure subseq [2018-01-20 23:26:11,101 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:26:11,101 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:26:11,101 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:26:11,101 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:26:11,101 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:26:11,101 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:26:11,102 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:26:11,102 INFO L128 BoogieDeclarations]: Found specification of procedure subseq [2018-01-20 23:26:11,102 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:26:11,102 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:26:11,102 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:26:11,323 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:26:11,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:26:11 BoogieIcfgContainer [2018-01-20 23:26:11,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:26:11,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:26:11,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:26:11,327 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:26:11,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:26:10" (1/3) ... [2018-01-20 23:26:11,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba522ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:26:11, skipping insertion in model container [2018-01-20 23:26:11,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:26:10" (2/3) ... [2018-01-20 23:26:11,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba522ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:26:11, skipping insertion in model container [2018-01-20 23:26:11,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:26:11" (3/3) ... [2018-01-20 23:26:11,332 INFO L105 eAbstractionObserver]: Analyzing ICFG subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:26:11,341 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:26:11,348 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:26:11,391 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:26:11,391 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:26:11,391 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:26:11,391 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:26:11,391 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:26:11,391 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:26:11,391 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:26:11,391 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:26:11,392 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:26:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-20 23:26:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:26:11,415 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:11,416 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:26:11,417 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:26:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-20 23:26:11,423 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:11,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,464 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:11,464 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,464 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:26:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:26:11,518 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:26:11,524 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:26:11,530 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:26:11,531 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:26:11,531 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:26:11,531 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:26:11,531 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:26:11,531 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:26:11,532 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:26:11,532 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == subseqErr0EnsuresViolation======== [2018-01-20 23:26:11,532 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:26:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-20 23:26:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-20 23:26:11,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:11,535 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] [2018-01-20 23:26:11,536 INFO L371 AbstractCegarLoop]: === Iteration 1 === [subseqErr0EnsuresViolation]=== [2018-01-20 23:26:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash 52339367, now seen corresponding path program 1 times [2018-01-20 23:26:11,536 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:11,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:11,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,538 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:26:11,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:26:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:26:11,628 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:26:11,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:26:11,629 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:26:11,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:26:11,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:26:11,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:26:11,648 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-20 23:26:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:26:11,759 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-20 23:26:11,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:26:11,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-20 23:26:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:26:11,768 INFO L225 Difference]: With dead ends: 59 [2018-01-20 23:26:11,768 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:26:11,771 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 [2018-01-20 23:26:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:26:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:26:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:26:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:26:11,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-20 23:26:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:26:11,791 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:26:11,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:26:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:26:11,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:26:11,794 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:26:11,794 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:26:11,794 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:26:11,795 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:26:11,795 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:26:11,795 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:26:11,795 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:26:11,795 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:26:11,795 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:26:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-20 23:26:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 23:26:11,798 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:11,798 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] [2018-01-20 23:26:11,798 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:26:11,798 INFO L82 PathProgramCache]: Analyzing trace with hash -138026163, now seen corresponding path program 1 times [2018-01-20 23:26:11,798 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:11,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:11,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,799 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:26:11,819 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:26:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:26:11,846 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:26:11,846 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:26:11,846 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:26:11,847 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:26:11,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:26:11,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:26:11,848 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-20 23:26:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:26:11,851 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-20 23:26:11,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:26:11,851 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-20 23:26:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:26:11,855 INFO L225 Difference]: With dead ends: 59 [2018-01-20 23:26:11,855 INFO L226 Difference]: Without dead ends: 40 [2018-01-20 23:26:11,855 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 [2018-01-20 23:26:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-20 23:26:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-20 23:26:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-20 23:26:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-01-20 23:26:11,864 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2018-01-20 23:26:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:26:11,865 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-01-20 23:26:11,865 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:26:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-01-20 23:26:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-20 23:26:11,866 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:11,866 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] [2018-01-20 23:26:11,866 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:26:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1839552329, now seen corresponding path program 1 times [2018-01-20 23:26:11,866 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:11,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,868 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:11,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,868 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:26:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:26:11,930 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:26:11,939 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:26:11,942 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:26:11,944 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:26:11,944 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:26:11,956 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:26:11,956 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:26:11,956 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:26:11,956 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:26:11,956 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:26:11,956 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:26:11,956 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:26:11,956 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:26:11,957 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:26:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-01-20 23:26:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 23:26:11,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:11,959 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] [2018-01-20 23:26:11,959 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:26:11,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2100699955, now seen corresponding path program 1 times [2018-01-20 23:26:11,959 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:11,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:11,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:11,960 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:26:11,971 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:26:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:26:11,987 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:26:11,987 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:26:11,987 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:26:11,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:26:11,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:26:11,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:26:11,988 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-01-20 23:26:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:26:11,993 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-01-20 23:26:11,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:26:11,993 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-20 23:26:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:26:11,994 INFO L225 Difference]: With dead ends: 59 [2018-01-20 23:26:11,994 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 23:26:11,995 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 [2018-01-20 23:26:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 23:26:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-20 23:26:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-20 23:26:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-20 23:26:12,001 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2018-01-20 23:26:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:26:12,001 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-20 23:26:12,001 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:26:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-20 23:26:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-20 23:26:12,003 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:26:12,003 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] [2018-01-20 23:26:12,003 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 23:26:12,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1875178679, now seen corresponding path program 1 times [2018-01-20 23:26:12,003 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:26:12,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:12,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:26:12,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:26:12,005 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:26:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:26:12,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:26:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:26:12,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:26:12,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 23:26:12,304 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:26:12,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 23:26:12,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 23:26:12,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:26:12,305 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2018-01-20 23:26:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:26:12,639 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-01-20 23:26:12,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 23:26:12,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-20 23:26:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:26:12,640 INFO L225 Difference]: With dead ends: 38 [2018-01-20 23:26:12,640 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:26:12,642 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-20 23:26:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:26:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:26:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:26:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:26:12,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-01-20 23:26:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:26:12,643 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:26:12,643 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 23:26:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:26:12,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:26:12,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:26:12 BoogieIcfgContainer [2018-01-20 23:26:12,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:26:12,648 INFO L168 Benchmark]: Toolchain (without parser) took 1877.65 ms. Allocated memory was 304.6 MB in the beginning and 465.0 MB in the end (delta: 160.4 MB). Free memory was 264.5 MB in the beginning and 368.3 MB in the end (delta: -103.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 5.3 GB. [2018-01-20 23:26:12,649 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 304.6 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:26:12,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.76 ms. Allocated memory is still 304.6 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:26:12,650 INFO L168 Benchmark]: Boogie Preprocessor took 40.11 ms. Allocated memory is still 304.6 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:26:12,650 INFO L168 Benchmark]: RCFGBuilder took 307.27 ms. Allocated memory is still 304.6 MB. Free memory was 251.5 MB in the beginning and 234.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:26:12,650 INFO L168 Benchmark]: TraceAbstraction took 1322.73 ms. Allocated memory was 304.6 MB in the beginning and 465.0 MB in the end (delta: 160.4 MB). Free memory was 234.5 MB in the beginning and 368.3 MB in the end (delta: -133.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 5.3 GB. [2018-01-20 23:26:12,652 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 304.6 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 201.76 ms. Allocated memory is still 304.6 MB. Free memory was 263.5 MB in the beginning and 253.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.11 ms. Allocated memory is still 304.6 MB. Free memory was 253.5 MB in the beginning and 251.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 307.27 ms. Allocated memory is still 304.6 MB. Free memory was 251.5 MB in the beginning and 234.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1322.73 ms. Allocated memory was 304.6 MB in the beginning and 465.0 MB in the end (delta: 160.4 MB). Free memory was 234.5 MB in the beginning and 368.3 MB in the end (delta: -133.8 MB). Peak memory consumption was 26.7 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, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 22 SDslu, 26 SDs, 0 SdLazy, 109 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-26-12-663.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_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-26-12-663.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_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-26-12-663.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_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-26-12-663.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_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-26-12-663.csv Received shutdown request...