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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:16:20,787 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:16:20,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:16:20,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:16:20,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:16:20,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:16:20,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:16:20,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:16:20,811 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:16:20,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:16:20,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:16:20,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:16:20,814 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:16:20,816 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:16:20,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:16:20,819 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:16:20,821 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:16:20,823 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:16:20,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:16:20,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:16:20,828 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:16:20,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:16:20,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:16:20,834 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_preciseopt.epf [2018-01-21 08:16:20,842 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:16:20,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:16:20,843 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:16:20,843 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:16:20,843 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:16:20,844 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:16:20,844 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:16:20,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:16:20,844 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:16:20,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:16:20,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:16:20,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:16:20,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:16:20,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:16:20,847 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:16:20,847 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:16:20,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:16:20,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:16:20,847 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:16:20,847 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:16:20,848 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:16:20,849 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:16:20,849 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:16:20,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:16:20,892 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:16:20,896 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:16:20,897 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:16:20,897 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:16:20,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:16:21,058 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:16:21,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:16:21,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:16:21,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:16:21,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:16:21,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11af259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21, skipping insertion in model container [2018-01-21 08:16:21,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,085 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:16:21,123 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:16:21,242 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:16:21,261 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:16:21,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21 WrapperNode [2018-01-21 08:16:21,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:16:21,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:16:21,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:16:21,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:16:21,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (1/1) ... [2018-01-21 08:16:21,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:16:21,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:16:21,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:16:21,307 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:16:21,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (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 [2018-01-21 08:16:21,351 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:16:21,352 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:16:21,352 INFO L136 BoogieDeclarations]: Found implementation of procedure sort [2018-01-21 08:16:21,352 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:16:21,352 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:16:21,352 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:16:21,352 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:16:21,352 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure sort [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:16:21,353 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:16:21,524 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:16:21,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:16:21 BoogieIcfgContainer [2018-01-21 08:16:21,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:16:21,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:16:21,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:16:21,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:16:21,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:16:21" (1/3) ... [2018-01-21 08:16:21,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9ad2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:16:21, skipping insertion in model container [2018-01-21 08:16:21,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:16:21" (2/3) ... [2018-01-21 08:16:21,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e9ad2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:16:21, skipping insertion in model container [2018-01-21 08:16:21,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:16:21" (3/3) ... [2018-01-21 08:16:21,533 INFO L105 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:16:21,543 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:16:21,549 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:16:21,594 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:21,594 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:21,594 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:21,595 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:21,595 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:21,595 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:21,595 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:21,595 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:16:21,596 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-01-21 08:16:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:16:21,622 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:21,623 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:16:21,623 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:16:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash 92258, now seen corresponding path program 1 times [2018-01-21 08:16:21,631 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:21,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:21,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,681 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:16:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:16:21,737 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:16:21,743 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:16:21,749 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:21,749 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:21,750 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:21,750 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:21,750 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:21,750 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:21,750 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:21,750 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:16:21,750 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-01-21 08:16:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 08:16:21,754 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:21,754 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] [2018-01-21 08:16:21,754 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:16:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash -702480495, now seen corresponding path program 1 times [2018-01-21 08:16:21,754 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:21,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,755 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:21,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,756 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:16:21,788 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:16:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:16:21,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:16:21,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:16:21,824 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:16:21,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:16:21,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:16:21,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:16:21,839 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-01-21 08:16:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:16:21,860 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-01-21 08:16:21,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:16:21,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 08:16:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:16:21,946 INFO L225 Difference]: With dead ends: 65 [2018-01-21 08:16:21,946 INFO L226 Difference]: Without dead ends: 35 [2018-01-21 08:16:21,949 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 [2018-01-21 08:16:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-21 08:16:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-21 08:16:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 08:16:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 08:16:21,979 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 20 [2018-01-21 08:16:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:16:21,980 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 08:16:21,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:16:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 08:16:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 08:16:21,980 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:21,981 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] [2018-01-21 08:16:21,981 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:16:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash -241453467, now seen corresponding path program 1 times [2018-01-21 08:16:21,981 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:21,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,982 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:21,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:21,983 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:16:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:16:22,028 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:16:22,034 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:16:22,035 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:16:22,036 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:16:22,037 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:16:22,044 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:22,044 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:22,044 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:22,044 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:22,045 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:22,045 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:22,045 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:22,045 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:16:22,045 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-01-21 08:16:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 08:16:22,047 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:22,047 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:16:22,047 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:16:22,047 INFO L82 PathProgramCache]: Analyzing trace with hash 356810512, now seen corresponding path program 1 times [2018-01-21 08:16:22,047 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:22,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:22,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,049 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:16:22,059 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:16:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:16:22,073 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:16:22,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:16:22,073 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:16:22,074 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:16:22,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:16:22,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:16:22,074 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-01-21 08:16:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:16:22,079 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-01-21 08:16:22,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:16:22,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 08:16:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:16:22,080 INFO L225 Difference]: With dead ends: 65 [2018-01-21 08:16:22,080 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 08:16:22,080 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 [2018-01-21 08:16:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 08:16:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 08:16:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 08:16:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-21 08:16:22,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 18 [2018-01-21 08:16:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:16:22,084 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-21 08:16:22,084 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:16:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-21 08:16:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 08:16:22,085 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:22,085 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:16:22,085 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 08:16:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1340529380, now seen corresponding path program 1 times [2018-01-21 08:16:22,085 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:22,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:22,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,086 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:16:22,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:16:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:16:22,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:16:22,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:16:22,204 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:16:22,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:16:22,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:16:22,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:16:22,206 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-21 08:16:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:16:22,308 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-01-21 08:16:22,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:16:22,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-21 08:16:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:16:22,309 INFO L225 Difference]: With dead ends: 33 [2018-01-21 08:16:22,309 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:16:22,311 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:16:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:16:22,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:16:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:16:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:16:22,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-21 08:16:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:16:22,312 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:16:22,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:16:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:16:22,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:16:22,316 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:22,316 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:22,316 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:22,316 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:22,316 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:22,316 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:22,316 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:22,316 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == sortErr0EnsuresViolation======== [2018-01-21 08:16:22,317 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-01-21 08:16:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 08:16:22,319 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:16:22,319 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:16:22,319 INFO L371 AbstractCegarLoop]: === Iteration 1 === [sortErr0EnsuresViolation]=== [2018-01-21 08:16:22,319 INFO L82 PathProgramCache]: Analyzing trace with hash -807610854, now seen corresponding path program 1 times [2018-01-21 08:16:22,319 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:16:22,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,321 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:22,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:16:22,321 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:16:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:16:22,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:16:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:16:22,343 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:16:22,343 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:16:22,344 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:16:22,344 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:16:22,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:16:22,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:16:22,344 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-01-21 08:16:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:16:22,349 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-01-21 08:16:22,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:16:22,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-21 08:16:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:16:22,350 INFO L225 Difference]: With dead ends: 65 [2018-01-21 08:16:22,350 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:16:22,351 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 [2018-01-21 08:16:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:16:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:16:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:16:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:16:22,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-01-21 08:16:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:16:22,352 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:16:22,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:16:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:16:22,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:16:22,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:16:22 BoogieIcfgContainer [2018-01-21 08:16:22,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:16:22,357 INFO L168 Benchmark]: Toolchain (without parser) took 1298.52 ms. Allocated memory was 296.7 MB in the beginning and 447.7 MB in the end (delta: 151.0 MB). Free memory was 255.1 MB in the beginning and 386.9 MB in the end (delta: -131.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:22,358 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 296.7 MB. Free memory is still 261.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:16:22,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.99 ms. Allocated memory is still 296.7 MB. Free memory was 254.1 MB in the beginning and 244.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:22,359 INFO L168 Benchmark]: Boogie Preprocessor took 37.21 ms. Allocated memory is still 296.7 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:22,359 INFO L168 Benchmark]: RCFGBuilder took 218.17 ms. Allocated memory is still 296.7 MB. Free memory was 242.1 MB in the beginning and 227.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:22,360 INFO L168 Benchmark]: TraceAbstraction took 830.09 ms. Allocated memory was 296.7 MB in the beginning and 447.7 MB in the end (delta: 151.0 MB). Free memory was 227.4 MB in the beginning and 386.9 MB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:16:22,361 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 296.7 MB. Free memory is still 261.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 206.99 ms. Allocated memory is still 296.7 MB. Free memory was 254.1 MB in the beginning and 244.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.21 ms. Allocated memory is still 296.7 MB. Free memory was 244.1 MB in the beginning and 242.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 218.17 ms. Allocated memory is still 296.7 MB. Free memory was 242.1 MB in the beginning and 227.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 830.09 ms. Allocated memory was 296.7 MB in the beginning and 447.7 MB in the end (delta: 151.0 MB). Free memory was 227.4 MB in the beginning and 386.9 MB in the end (delta: -159.5 MB). There was no memory consumed. 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, 39 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=39occurred 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L550] int array_size = __VERIFIER_nondet_int(); [L551] COND TRUE array_size < 1 || array_size >= 2147483647 / sizeof(int) [L552] array_size = 1 VAL [array_size=1] [L554] EXPR, FCALL __builtin_alloca (array_size * sizeof(int)) VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1] [L554] int* numbers = (int*) __builtin_alloca (array_size * sizeof(int)); VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1, numbers={6:0}] [L555] CALL sort(numbers, array_size) VAL [\old(n)=1, x={6:0}] [L541] int pass; [L542] int i; [L543] pass=1 VAL [\old(n)=1, n=1, pass=1, x={6:0}, x={6:0}] [L543] COND FALSE, RET !(pass < n) VAL [\old(n)=1, n=1, pass=1, x={6:0}, x={6:0}] [L555] sort(numbers, array_size) VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1, numbers={6:0}] [L556] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 39 locations, 4 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 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=39occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 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 - PositiveResult [Line: 549]: 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, 39 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 21 SDslu, 4 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1189 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 - 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: sortErr0EnsuresViolation CFG has 4 procedures, 39 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 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=39occurred 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-16-22-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-16-22-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-16-22-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-16-22-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/java_BubbleSort-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-16-22-371.csv Received shutdown request...