java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:23:56,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:23:56,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:23:56,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:23:56,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:23:56,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:23:56,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:23:56,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:23:56,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:23:56,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:23:56,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:23:56,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:23:56,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:23:56,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:23:56,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:23:56,498 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:23:56,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:23:56,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:23:56,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:23:56,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:23:56,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 23:23:56,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 23:23:56,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 23:23:56,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 23:23:56,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 23:23:56,511 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 23:23:56,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 23:23:56,512 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 23:23:56,512 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 23:23:56,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:23:56,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:23:56,513 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:23:56,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:23:56,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:23:56,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:23:56,523 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:23:56,523 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:23:56,523 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:23:56,523 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:23:56,524 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:23:56,524 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:23:56,524 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:23:56,524 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:23:56,524 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:23:56,525 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:23:56,526 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:23:56,526 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:23:56,526 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:23:56,526 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:23:56,526 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:23:56,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:23:56,527 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:23:56,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:23:56,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:23:56,528 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:23:56,528 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:23:56,529 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:23:56,529 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:23:56,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:23:56,571 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:23:56,575 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:23:56,576 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:23:56,576 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:23:56,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:23:56,741 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:23:56,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:23:56,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:23:56,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:23:56,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:23:56,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0715de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56, skipping insertion in model container [2018-01-20 23:23:56,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,768 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:23:56,804 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:23:56,923 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:23:56,939 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:23:56,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56 WrapperNode [2018-01-20 23:23:56,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:23:56,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:23:56,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:23:56,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:23:56,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (1/1) ... [2018-01-20 23:23:56,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:23:56,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:23:56,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:23:56,984 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:23:56,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (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 [2018-01-20 23:23:57,030 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:23:57,030 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:23:57,030 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:23:57,030 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:23:57,031 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:23:57,032 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:23:57,032 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:23:57,181 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:23:57,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:23:57 BoogieIcfgContainer [2018-01-20 23:23:57,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:23:57,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:23:57,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:23:57,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:23:57,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:23:56" (1/3) ... [2018-01-20 23:23:57,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:23:57, skipping insertion in model container [2018-01-20 23:23:57,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:56" (2/3) ... [2018-01-20 23:23:57,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:23:57, skipping insertion in model container [2018-01-20 23:23:57,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:23:57" (3/3) ... [2018-01-20 23:23:57,187 INFO L105 eAbstractionObserver]: Analyzing ICFG add_last-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:23:57,194 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:23:57,199 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-20 23:23:57,238 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:57,238 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:57,239 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:57,239 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:57,239 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:57,239 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:57,239 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:57,239 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:23:57,240 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-20 23:23:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:23:57,268 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:57,270 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:23:57,270 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:23:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash 73999, now seen corresponding path program 1 times [2018-01-20 23:23:57,279 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:57,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,323 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:57,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,323 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:57,381 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:23:57,387 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:57,393 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:57,393 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:57,393 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:57,393 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:57,393 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:57,394 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:57,394 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:57,394 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:23:57,394 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-20 23:23:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-20 23:23:57,397 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:57,397 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:57,397 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:23:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1437994015, now seen corresponding path program 1 times [2018-01-20 23:23:57,398 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:57,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,399 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:57,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,400 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:57,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:57,520 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:57,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 23:23:57,520 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:57,522 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:23:57,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:23:57,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 23:23:57,602 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-20 23:23:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:57,654 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-20 23:23:57,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:23:57,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-20 23:23:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:57,665 INFO L225 Difference]: With dead ends: 39 [2018-01-20 23:23:57,665 INFO L226 Difference]: Without dead ends: 25 [2018-01-20 23:23:57,668 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:23:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-20 23:23:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-01-20 23:23:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-20 23:23:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-01-20 23:23:57,699 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2018-01-20 23:23:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:57,700 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-01-20 23:23:57,700 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:23:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-01-20 23:23:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-20 23:23:57,701 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:57,701 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:57,701 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:23:57,701 INFO L82 PathProgramCache]: Analyzing trace with hash 319344702, now seen corresponding path program 1 times [2018-01-20 23:23:57,701 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:57,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,703 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:57,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,703 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:57,745 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:23:57,769 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:57,772 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:57,773 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:57,782 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:57,783 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:57,783 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:57,783 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:57,783 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:57,783 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:57,783 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:57,783 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:23:57,784 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-20 23:23:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-20 23:23:57,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:57,786 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:57,786 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:23:57,786 INFO L82 PathProgramCache]: Analyzing trace with hash -108758803, now seen corresponding path program 1 times [2018-01-20 23:23:57,787 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:57,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:57,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,788 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:57,799 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:57,836 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:57,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 23:23:57,837 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:57,837 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:23:57,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:23:57,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 23:23:57,838 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-20 23:23:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:57,864 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-20 23:23:57,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:23:57,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-20 23:23:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:57,865 INFO L225 Difference]: With dead ends: 39 [2018-01-20 23:23:57,866 INFO L226 Difference]: Without dead ends: 23 [2018-01-20 23:23:57,866 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:23:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-20 23:23:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-01-20 23:23:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-01-20 23:23:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-01-20 23:23:57,870 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2018-01-20 23:23:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:57,871 INFO L432 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-01-20 23:23:57,871 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:23:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-01-20 23:23:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-20 23:23:57,872 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:57,872 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:57,872 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 23:23:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 907593866, now seen corresponding path program 1 times [2018-01-20 23:23:57,873 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:57,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,874 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:57,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:57,874 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:57,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:57,973 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:57,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:23:57,973 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:57,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:23:57,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:23:57,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 23:23:57,974 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-01-20 23:23:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:58,033 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-01-20 23:23:58,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:23:58,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-20 23:23:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:58,034 INFO L225 Difference]: With dead ends: 23 [2018-01-20 23:23:58,034 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:23:58,036 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:23:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:23:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:23:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:23:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:23:58,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-20 23:23:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:58,037 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:23:58,037 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:23:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:23:58,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:23:58,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:23:58 BoogieIcfgContainer [2018-01-20 23:23:58,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:23:58,042 INFO L168 Benchmark]: Toolchain (without parser) took 1300.67 ms. Allocated memory was 302.5 MB in the beginning and 456.7 MB in the end (delta: 154.1 MB). Free memory was 260.8 MB in the beginning and 399.4 MB in the end (delta: -138.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:58,044 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:23:58,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.00 ms. Allocated memory is still 302.5 MB. Free memory was 260.8 MB in the beginning and 249.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:58,045 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 302.5 MB. Free memory was 249.8 MB in the beginning and 248.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-20 23:23:58,045 INFO L168 Benchmark]: RCFGBuilder took 197.71 ms. Allocated memory is still 302.5 MB. Free memory was 248.8 MB in the beginning and 234.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:58,045 INFO L168 Benchmark]: TraceAbstraction took 859.23 ms. Allocated memory was 302.5 MB in the beginning and 456.7 MB in the end (delta: 154.1 MB). Free memory was 233.9 MB in the beginning and 399.4 MB in the end (delta: -165.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:23:58,047 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 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 201.00 ms. Allocated memory is still 302.5 MB. Free memory was 260.8 MB in the beginning and 249.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 302.5 MB. Free memory was 249.8 MB in the beginning and 248.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 197.71 ms. Allocated memory is still 302.5 MB. Free memory was 248.8 MB in the beginning and 234.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 859.23 ms. Allocated memory was 302.5 MB in the beginning and 456.7 MB in the end (delta: 154.1 MB). Free memory was 233.9 MB in the beginning and 399.4 MB in the end (delta: -165.4 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) * 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 3 procedures, 30 locations, 3 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=30occurred 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: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] EXPR, FCALL __builtin_alloca (length*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={6:0}, length=1] [L544] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={6:0}, arr={6:0}, length=1] [L545] COND FALSE !(!arr) [L546] int *a = arr; VAL [__builtin_alloca (length*sizeof(int))={6:0}, a={6:0}, arr={6:0}, length=1] [L547] EXPR, FCALL \read(*a) VAL [\read(*a)=7, __builtin_alloca (length*sizeof(int))={6:0}, a={6:0}, arr={6:0}, length=1] [L547] EXPR, FCALL arr + length - 1 VAL [\read(*a)=7, __builtin_alloca (length*sizeof(int))={6:0}, a={6:0}, arr={6:0}, arr + length - 1=7, length=1] [L547] COND FALSE !(*a != *(arr + length - 1)) [L551] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 30 locations, 3 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 28 SDslu, 27 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 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: 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: mainErr0EnsuresViolation CFG has 3 procedures, 30 locations, 3 error locations. SAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 34 SDslu, 41 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-23-58-056.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-23-58-056.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-23-58-056.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-23-58-056.csv Received shutdown request...