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


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This is Ultimate 0.1.23-2f49842
[2018-01-21 10:42:19,765 INFO  L170        SettingsManager]: Resetting all preferences to default values...
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[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...