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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:28:55,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:28:55,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:28:55,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:28:55,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:28:55,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:28:55,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:28:55,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:28:55,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:28:55,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:28:55,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:28:55,993 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_imprecise.epf [2018-01-21 00:28:56,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:28:56,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:28:56,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:28:56,002 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:28:56,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:28:56,002 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:28:56,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:28:56,003 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:28:56,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:28:56,003 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:28:56,003 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:28:56,003 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:28:56,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:28:56,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:28:56,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:28:56,005 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:28:56,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:28:56,007 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:28:56,007 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:28:56,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:28:56,053 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:28:56,057 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:28:56,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:28:56,058 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:28:56,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-01-21 00:28:56,155 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:28:56,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:28:56,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:28:56,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:28:56,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:28:56,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7c2ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56, skipping insertion in model container [2018-01-21 00:28:56,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,191 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:28:56,212 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:28:56,344 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:28:56,366 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:28:56,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56 WrapperNode [2018-01-21 00:28:56,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:28:56,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:28:56,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:28:56,375 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:28:56,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (1/1) ... [2018-01-21 00:28:56,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:28:56,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:28:56,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:28:56,402 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:28:56,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (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 00:28:56,449 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:28:56,449 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:28:56,449 INFO L136 BoogieDeclarations]: Found implementation of procedure diff [2018-01-21 00:28:56,449 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:28:56,450 INFO L128 BoogieDeclarations]: Found specification of procedure diff [2018-01-21 00:28:56,451 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:28:56,451 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:28:56,451 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:28:56,622 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:28:56,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:28:56 BoogieIcfgContainer [2018-01-21 00:28:56,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:28:56,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:28:56,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:28:56,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:28:56,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:28:56" (1/3) ... [2018-01-21 00:28:56,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49e7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:28:56, skipping insertion in model container [2018-01-21 00:28:56,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:56" (2/3) ... [2018-01-21 00:28:56,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49e7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:28:56, skipping insertion in model container [2018-01-21 00:28:56,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:28:56" (3/3) ... [2018-01-21 00:28:56,631 INFO L105 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-01-21 00:28:56,641 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:28:56,648 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 00:28:56,692 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:56,692 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:56,693 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:56,693 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:56,693 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:56,693 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:56,693 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:56,693 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:28:56,696 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-21 00:28:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:28:56,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:56,725 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:28:56,725 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:28:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash 86492, now seen corresponding path program 1 times [2018-01-21 00:28:56,733 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:56,776 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:56,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:56,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:56,777 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:56,833 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:28:56,840 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:56,846 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:56,846 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:56,846 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:56,846 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:56,847 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:56,847 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:56,847 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:56,847 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:28:56,847 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-21 00:28:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 00:28:56,850 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:56,850 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:56,850 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:28:56,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1519970565, now seen corresponding path program 1 times [2018-01-21 00:28:56,851 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:56,852 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:56,852 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:56,852 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:56,852 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:56,882 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:56,915 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 00:28:56,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:56,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:56,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:56,919 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:56,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:56,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:56,933 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-01-21 00:28:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:56,954 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-01-21 00:28:56,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:56,955 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 00:28:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:56,967 INFO L225 Difference]: With dead ends: 51 [2018-01-21 00:28:56,967 INFO L226 Difference]: Without dead ends: 27 [2018-01-21 00:28:56,970 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 00:28:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-21 00:28:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-01-21 00:28:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-21 00:28:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-01-21 00:28:57,093 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2018-01-21 00:28:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:57,094 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-01-21 00:28:57,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-01-21 00:28:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 00:28:57,095 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:57,095 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:57,095 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:28:57,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1810228603, now seen corresponding path program 1 times [2018-01-21 00:28:57,095 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:57,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,096 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:57,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,097 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:57,141 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:28:57,147 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:57,149 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:57,151 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:57,151 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:57,161 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:57,161 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:57,161 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:57,161 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:57,161 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:57,161 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:57,162 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:57,162 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == diffErr0EnsuresViolation======== [2018-01-21 00:28:57,162 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-21 00:28:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-21 00:28:57,164 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:57,164 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:57,164 INFO L371 AbstractCegarLoop]: === Iteration 1 === [diffErr0EnsuresViolation]=== [2018-01-21 00:28:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash 450243589, now seen corresponding path program 1 times [2018-01-21 00:28:57,165 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:57,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,166 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:57,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,166 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:57,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:57,195 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 00:28:57,195 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:57,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:57,196 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:57,196 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:57,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:57,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:57,197 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-01-21 00:28:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:57,202 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-01-21 00:28:57,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:57,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-01-21 00:28:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:57,202 INFO L225 Difference]: With dead ends: 51 [2018-01-21 00:28:57,203 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:28:57,203 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 00:28:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:28:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:28:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:28:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:28:57,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-01-21 00:28:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:57,205 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:28:57,205 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:28:57,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:28:57,208 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:57,208 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:57,209 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:57,209 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:57,209 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:57,209 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:57,209 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:57,209 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:28:57,209 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-21 00:28:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 00:28:57,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:57,212 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:57,212 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:28:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 23927998, now seen corresponding path program 1 times [2018-01-21 00:28:57,212 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:57,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,213 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:57,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:57,214 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:57,225 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:57,239 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 00:28:57,240 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:57,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:57,240 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:57,240 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:57,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:57,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:57,241 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-01-21 00:28:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:57,245 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-01-21 00:28:57,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:57,246 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-21 00:28:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:57,246 INFO L225 Difference]: With dead ends: 51 [2018-01-21 00:28:57,246 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:28:57,247 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 00:28:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:28:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:28:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:28:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:28:57,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-01-21 00:28:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:57,248 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:28:57,248 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:28:57,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:28:57,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:28:57 BoogieIcfgContainer [2018-01-21 00:28:57,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:28:57,252 INFO L168 Benchmark]: Toolchain (without parser) took 1096.95 ms. Allocated memory was 302.5 MB in the beginning and 463.5 MB in the end (delta: 161.0 MB). Free memory was 263.4 MB in the beginning and 423.3 MB in the end (delta: -159.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:28:57,254 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 302.5 MB. Free memory is still 267.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:57,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.01 ms. Allocated memory is still 302.5 MB. Free memory was 263.4 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. [2018-01-21 00:28:57,255 INFO L168 Benchmark]: Boogie Preprocessor took 27.37 ms. Allocated memory is still 302.5 MB. Free memory is still 253.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:57,255 INFO L168 Benchmark]: RCFGBuilder took 221.23 ms. Allocated memory is still 302.5 MB. Free memory was 253.5 MB in the beginning and 236.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. [2018-01-21 00:28:57,256 INFO L168 Benchmark]: TraceAbstraction took 627.36 ms. Allocated memory was 302.5 MB in the beginning and 463.5 MB in the end (delta: 161.0 MB). Free memory was 236.5 MB in the beginning and 423.3 MB in the end (delta: -186.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:57,259 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 302.5 MB. Free memory is still 267.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 213.01 ms. Allocated memory is still 302.5 MB. Free memory was 263.4 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 27.37 ms. Allocated memory is still 302.5 MB. Free memory is still 253.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 221.23 ms. Allocated memory is still 302.5 MB. Free memory was 253.5 MB in the beginning and 236.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 627.36 ms. Allocated memory was 302.5 MB in the beginning and 463.5 MB in the end (delta: 161.0 MB). Free memory was 236.5 MB in the beginning and 423.3 MB in the end (delta: -186.8 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, 31 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=31occurred 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: [L27] int *A; [L28] int Alen = __VERIFIER_nondet_int(); [L29] int *B; [L30] int Blen = __VERIFIER_nondet_int(); [L31] int *D; VAL [Alen=0, Blen=0] [L32] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=0, \old(Blen)=0, A={7:3}, B={4:6}, D={2:5}] [L4] int k = 0; [L5] int i = 0; [L6] int l1 = Alen; [L7] int l2 = Blen; [L8] int found; VAL [\old(Alen)=0, \old(Blen)=0, A={7:3}, A={7:3}, Alen=0, B={4:6}, B={4:6}, Blen=0, D={2:5}, D={2:5}, i=0, k=0, l1=0, l2=0] [L9] COND FALSE, RET !(i < l1) VAL [\old(Alen)=0, \old(Blen)=0, A={7:3}, A={7:3}, Alen=0, B={4:6}, B={4:6}, Blen=0, D={2:5}, D={2:5}, i=0, k=0, l1=0, l2=0] [L32] diff(A, Alen, B, Blen, D) VAL [A={7:3}, Alen=0, B={4:6}, Blen=0, D={2:5}] [L33] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 31 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 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=31occurred 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, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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: 2]: 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: diffErr0EnsuresViolation CFG has 4 procedures, 31 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 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=31occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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: 26]: 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, 31 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 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=31occurred 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/diff_usafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-28-57-269.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-28-57-269.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-28-57-269.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-28-57-269.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-28-57-269.csv Received shutdown request...