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_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety-bitfields/test-bitfields-1_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:42:19,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:42:19,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:42:19,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:42:19,783 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:42:19,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:42:19,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:42:19,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:42:19,789 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:42:19,790 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:42:19,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:42:19,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:42:19,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:42:19,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:42:19,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:42:19,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:42:19,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:42:19,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:42:19,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:42:19,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:42:19,807 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:42:19,807 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:42:19,807 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:42:19,808 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:42:19,809 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:42:19,810 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:42:19,811 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:42:19,811 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:42:19,812 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:42:19,812 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:42:19,813 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:42:19,813 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_smtcomp.epf [2018-01-21 10:42:19,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:42:19,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:42:19,823 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:42:19,823 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:42:19,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:42:19,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:42:19,823 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:42:19,824 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:42:19,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:42:19,824 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:42:19,824 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:42:19,824 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:42:19,825 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:42:19,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:42:19,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:42:19,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:42:19,826 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:42:19,826 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:42:19,826 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:42:19,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:42:19,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:42:19,827 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:42:19,827 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:42:19,827 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:42:19,827 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:42:19,828 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:42:19,829 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:42:19,829 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:42:19,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:42:19,873 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:42:19,876 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:42:19,878 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:42:19,878 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:42:19,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety-bitfields/test-bitfields-1_false-valid-deref.i [2018-01-21 10:42:19,984 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:42:19,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:42:19,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:42:19,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:42:19,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:42:19,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:42:19" (1/1) ... [2018-01-21 10:42:19,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f2d9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:19, skipping insertion in model container [2018-01-21 10:42:19,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:42:19" (1/1) ... [2018-01-21 10:42:20,011 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:42:20,025 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:42:20,137 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:42:20,154 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:42:20,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20 WrapperNode [2018-01-21 10:42:20,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:42:20,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:42:20,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:42:20,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:42:20,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (1/1) ... [2018-01-21 10:42:20,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:42:20,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:42:20,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:42:20,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:42:20,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (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 10:42:20,261 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:42:20,261 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:42:20,261 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:42:20,261 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:42:20,262 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:42:20,263 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:42:20,263 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:42:20,263 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:42:20,451 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:42:20,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:42:20 BoogieIcfgContainer [2018-01-21 10:42:20,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:42:20,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:42:20,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:42:20,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:42:20,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:42:19" (1/3) ... [2018-01-21 10:42:20,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13eecc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:42:20, skipping insertion in model container [2018-01-21 10:42:20,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:42:20" (2/3) ... [2018-01-21 10:42:20,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13eecc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:42:20, skipping insertion in model container [2018-01-21 10:42:20,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:42:20" (3/3) ... [2018-01-21 10:42:20,458 INFO L105 eAbstractionObserver]: Analyzing ICFG test-bitfields-1_false-valid-deref.i [2018-01-21 10:42:20,465 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:42:20,471 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:42:20,507 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:20,508 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:20,508 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:20,508 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:20,508 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:20,508 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:20,508 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:20,508 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:42:20,509 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 10:42:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:42:20,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:20,536 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:42:20,536 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:42:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 76882, now seen corresponding path program 1 times [2018-01-21 10:42:20,544 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:20,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,605 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:20,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,605 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:20,664 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:42:20,671 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:20,678 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:20,678 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:20,678 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:20,678 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:20,678 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:20,678 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:20,679 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:20,679 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:42:20,679 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 10:42:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 10:42:20,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:20,683 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:20,683 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:42:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash 892483675, now seen corresponding path program 1 times [2018-01-21 10:42:20,683 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:20,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:20,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,685 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:20,764 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:42:20,769 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:20,771 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:20,772 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:20,782 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:20,783 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:20,783 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:20,783 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:20,783 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:20,783 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:20,783 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:20,783 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:42:20,784 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 10:42:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 10:42:20,786 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:20,786 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:20,787 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:42:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash 251207754, now seen corresponding path program 1 times [2018-01-21 10:42:20,787 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:20,788 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:20,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:20,789 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:20,821 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:21,020 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 10:42:21,021 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:21,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:42:21,022 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:21,023 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:42:21,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:42:21,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:42:21,101 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-01-21 10:42:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:21,308 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-01-21 10:42:21,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 10:42:21,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-21 10:42:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:21,319 INFO L225 Difference]: With dead ends: 59 [2018-01-21 10:42:21,319 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:42:21,322 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:42:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:42:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:42:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:42:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:42:21,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 10:42:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:21,353 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:42:21,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:42:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:42:21,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:42:21,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:42:21 BoogieIcfgContainer [2018-01-21 10:42:21,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:42:21,357 INFO L168 Benchmark]: Toolchain (without parser) took 1372.21 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 265.0 MB in the beginning and 422.6 MB in the end (delta: -157.6 MB). Peak memory consumption was 2.3 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:21,358 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 305.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:42:21,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.54 ms. Allocated memory is still 305.7 MB. Free memory was 264.0 MB in the beginning and 255.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:21,359 INFO L168 Benchmark]: Boogie Preprocessor took 38.15 ms. Allocated memory is still 305.7 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-21 10:42:21,359 INFO L168 Benchmark]: RCFGBuilder took 252.54 ms. Allocated memory is still 305.7 MB. Free memory was 254.9 MB in the beginning and 240.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:21,360 INFO L168 Benchmark]: TraceAbstraction took 904.38 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 240.1 MB in the beginning and 422.6 MB in the end (delta: -182.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:42:21,362 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 305.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 170.54 ms. Allocated memory is still 305.7 MB. Free memory was 264.0 MB in the beginning and 255.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.15 ms. Allocated memory is still 305.7 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 252.54 ms. Allocated memory is still 305.7 MB. Free memory was 254.9 MB in the beginning and 240.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 904.38 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 240.1 MB in the beginning and 422.6 MB in the end (delta: -182.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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, 32 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=32occurred 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: [L23] struct A *p; [L24] EXPR, FCALL malloc(2) VAL [malloc(2)={7:0}] [L24] p = malloc(2) VAL [malloc(2)={7:0}, p={7:0}] [L25] FCALL p->a = 1 VAL [malloc(2)={7:0}, p={7:0}] [L26] EXPR, FCALL p->a VAL [malloc(2)={7:0}, p={7:0}, p->a=1] [L26] COND FALSE !(p->a != 1) [L29] FCALL p->b = 2 VAL [malloc(2)={7:0}, p={7:0}] [L30] EXPR, FCALL p->b VAL [malloc(2)={7:0}, p={7:0}, p->b=2] [L30] COND FALSE !(p->b != 2) [L33] FCALL p->c = 3 VAL [malloc(2)={7:0}, p={7:0}] [L34] EXPR, FCALL p->c VAL [malloc(2)={7:0}, p={7:0}, p->c=3] [L34] COND FALSE !(p->c != 3) [L37] FCALL p->d = 4 VAL [malloc(2)={7:0}, p={7:0}] [L38] EXPR, FCALL p->d VAL [malloc(2)={7:0}, p={7:0}, p->d=4] [L38] COND FALSE !(p->d != 4) [L41] FCALL free(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 32 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=32occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 21]: 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, 32 locations, 3 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 36 SDslu, 9 SDs, 0 SdLazy, 58 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 4914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-bitfields-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-42-21-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-bitfields-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-42-21-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-bitfields-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-42-21-371.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-bitfields-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-42-21-371.csv Received shutdown request...