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_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/add_last_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:29:12,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:29:12,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:29:12,083 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:29:12,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:29:12,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:29:12,086 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:29:12,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:29:12,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:29:12,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:29:12,091 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:29:12,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:29:12,092 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:29:12,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:29:12,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:29:12,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:29:12,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:29:12,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:29:12,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:29:12,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:29:12,103 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 05:29:12,103 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 05:29:12,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 05:29:12,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 05:29:12,104 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 05:29:12,109 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 05:29:12,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 05:29:12,110 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 05:29:12,110 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 05:29:12,110 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:29:12,111 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:29:12,111 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_precise.epf [2018-01-21 05:29:12,140 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:29:12,140 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:29:12,141 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:29:12,141 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:29:12,141 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:29:12,141 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:29:12,141 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:29:12,141 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:29:12,142 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:29:12,142 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:29:12,142 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:29:12,142 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:29:12,142 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:29:12,142 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:29:12,143 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:29:12,143 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:29:12,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:29:12,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:29:12,144 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:29:12,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:29:12,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:29:12,144 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:29:12,145 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:29:12,146 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:29:12,146 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:29:12,146 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:29:12,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:29:12,190 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:29:12,193 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:29:12,195 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:29:12,195 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:29:12,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/add_last_unsafe_false-valid-deref.i [2018-01-21 05:29:12,422 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:29:12,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:29:12,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:29:12,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:29:12,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:29:12,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553c86d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12, skipping insertion in model container [2018-01-21 05:29:12,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,456 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:29:12,493 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:29:12,620 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:29:12,636 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:29:12,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12 WrapperNode [2018-01-21 05:29:12,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:29:12,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:29:12,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:29:12,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:29:12,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (1/1) ... [2018-01-21 05:29:12,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:29:12,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:29:12,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:29:12,674 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:29:12,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (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 05:29:12,718 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:29:12,719 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:29:12,719 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:29:12,719 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:29:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:29:12,720 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:29:12,945 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:29:12,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:29:12 BoogieIcfgContainer [2018-01-21 05:29:12,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:29:12,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:29:12,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:29:12,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:29:12,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:29:12" (1/3) ... [2018-01-21 05:29:12,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a6590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:29:12, skipping insertion in model container [2018-01-21 05:29:12,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:29:12" (2/3) ... [2018-01-21 05:29:12,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a6590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:29:12, skipping insertion in model container [2018-01-21 05:29:12,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:29:12" (3/3) ... [2018-01-21 05:29:12,951 INFO L105 eAbstractionObserver]: Analyzing ICFG add_last_unsafe_false-valid-deref.i [2018-01-21 05:29:12,956 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:29:12,961 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 05:29:13,021 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:29:13,021 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:29:13,021 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:29:13,021 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:29:13,022 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:29:13,022 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:29:13,022 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:29:13,022 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:29:13,022 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:29:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:29:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:29:13,054 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:29:13,055 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:29:13,056 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:29:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 73999, now seen corresponding path program 1 times [2018-01-21 05:29:13,067 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:29:13,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,122 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:29:13,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,122 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:29:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:29:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:29:13,179 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:29:13,185 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:29:13,191 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:29:13,191 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:29:13,191 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:29:13,191 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:29:13,191 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:29:13,191 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:29:13,192 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:29:13,192 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:29:13,192 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:29:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:29:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 05:29:13,195 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:29:13,195 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:29:13,195 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:29:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1437994015, now seen corresponding path program 1 times [2018-01-21 05:29:13,196 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:29:13,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,197 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:29:13,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,197 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:29:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:29:13,228 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:29:13,355 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 05:29:13,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:29:13,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:29:13,416 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:29:13,419 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:29:13,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:29:13,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:29:13,498 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 05:29:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:29:13,564 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-21 05:29:13,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:29:13,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-21 05:29:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:29:13,575 INFO L225 Difference]: With dead ends: 39 [2018-01-21 05:29:13,575 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 05:29:13,582 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 [2018-01-21 05:29:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 05:29:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-01-21 05:29:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-01-21 05:29:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-01-21 05:29:13,615 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2018-01-21 05:29:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:29:13,616 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-01-21 05:29:13,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:29:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-01-21 05:29:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:29:13,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:29:13,617 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:29:13,617 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:29:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 319344702, now seen corresponding path program 1 times [2018-01-21 05:29:13,617 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:29:13,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:29:13,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,619 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:29:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:29:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:29:13,665 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:29:13,673 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:29:13,675 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:29:13,676 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:29:13,687 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:29:13,687 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:29:13,687 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:29:13,688 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:29:13,688 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:29:13,688 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:29:13,688 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:29:13,688 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:29:13,688 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:29:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-01-21 05:29:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 05:29:13,690 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:29:13,690 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:29:13,691 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:29:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash -108758803, now seen corresponding path program 1 times [2018-01-21 05:29:13,691 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:29:13,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,692 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:29:13,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,693 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:29:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:29:13,703 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:29:13,743 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 05:29:13,744 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:29:13,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:29:13,744 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:29:13,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:29:13,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:29:13,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:29:13,745 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-01-21 05:29:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:29:13,773 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-21 05:29:13,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:29:13,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-21 05:29:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:29:13,776 INFO L225 Difference]: With dead ends: 39 [2018-01-21 05:29:13,776 INFO L226 Difference]: Without dead ends: 23 [2018-01-21 05:29:13,777 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 [2018-01-21 05:29:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-21 05:29:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-01-21 05:29:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-01-21 05:29:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-01-21 05:29:13,781 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2018-01-21 05:29:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:29:13,781 INFO L432 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-01-21 05:29:13,781 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:29:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-01-21 05:29:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 05:29:13,782 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:29:13,782 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:29:13,782 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 05:29:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash 907593866, now seen corresponding path program 1 times [2018-01-21 05:29:13,782 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:29:13,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,783 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:29:13,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:29:13,783 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:29:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:29:13,798 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:29:13,896 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 05:29:13,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:29:13,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:29:13,896 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:29:13,897 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:29:13,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:29:13,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:29:13,898 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-01-21 05:29:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:29:13,980 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-01-21 05:29:13,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:29:13,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-21 05:29:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:29:13,981 INFO L225 Difference]: With dead ends: 23 [2018-01-21 05:29:13,981 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:29:13,983 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 [2018-01-21 05:29:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:29:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:29:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:29:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:29:13,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 05:29:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:29:13,984 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:29:13,984 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:29:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:29:13,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:29:13,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:29:13 BoogieIcfgContainer [2018-01-21 05:29:13,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:29:13,989 INFO L168 Benchmark]: Toolchain (without parser) took 1566.03 ms. Allocated memory was 307.8 MB in the beginning and 468.7 MB in the end (delta: 161.0 MB). Free memory was 266.7 MB in the beginning and 411.2 MB in the end (delta: -144.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 5.3 GB. [2018-01-21 05:29:13,990 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 307.8 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:29:13,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.48 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 256.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:29:13,990 INFO L168 Benchmark]: Boogie Preprocessor took 28.75 ms. Allocated memory is still 307.8 MB. Free memory was 256.7 MB in the beginning and 254.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:29:13,991 INFO L168 Benchmark]: RCFGBuilder took 272.07 ms. Allocated memory is still 307.8 MB. Free memory was 254.7 MB in the beginning and 241.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-01-21 05:29:13,991 INFO L168 Benchmark]: TraceAbstraction took 1041.54 ms. Allocated memory was 307.8 MB in the beginning and 468.7 MB in the end (delta: 161.0 MB). Free memory was 239.5 MB in the beginning and 411.2 MB in the end (delta: -171.7 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:29:13,993 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 307.8 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.48 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 256.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.75 ms. Allocated memory is still 307.8 MB. Free memory was 256.7 MB in the beginning and 254.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 272.07 ms. Allocated memory is still 307.8 MB. Free memory was 254.7 MB in the beginning and 241.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1041.54 ms. Allocated memory was 307.8 MB in the beginning and 468.7 MB in the end (delta: 161.0 MB). Free memory was 239.5 MB in the beginning and 411.2 MB in the end (delta: -171.7 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 [L543] length = 1 VAL [length=1] [L544] EXPR, FCALL __builtin_alloca (length) VAL [__builtin_alloca (length)={3:0}, length=1] [L544] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={3:0}, arr={3:0}, length=1] [L545] COND FALSE !(!arr) [L546] int *a = arr; VAL [__builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, length=1] [L547] EXPR, FCALL \read(*a) VAL [\read(*a)=4, __builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, length=1] [L547] EXPR, FCALL arr + length - 1 VAL [\read(*a)=4, __builtin_alloca (length)={3:0}, a={3:0}, arr={3:0}, arr + length - 1=4, 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, 0.4s 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, 0.1s 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, 0.1s 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_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-29-14-001.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-29-14-001.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-29-14-001.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-29-14-001.csv Received shutdown request...