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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.23-2f49842
[2018-01-20 22:08:36,364 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-01-20 22:08:36,365 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-01-20 22:08:36,377 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-01-20 22:08:36,378 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-01-20 22:08:36,378 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-01-20 22:08:36,380 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-01-20 22:08:36,381 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-01-20 22:08:36,383 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-01-20 22:08:36,384 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-01-20 22:08:36,384 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-01-20 22:08:36,384 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-01-20 22:08:36,385 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-01-20 22:08:36,386 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-01-20 22:08:36,386 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-01-20 22:08:36,389 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-01-20 22:08:36,391 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-01-20 22:08:36,393 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-01-20 22:08:36,394 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-01-20 22:08:36,395 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-01-20 22:08:36,397 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-01-20 22:08:36,397 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-01-20 22:08:36,398 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-01-20 22:08:36,399 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-01-20 22:08:36,399 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-01-20 22:08:36,400 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-01-20 22:08:36,401 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-01-20 22:08:36,401 INFO  L177        SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-01-20 22:08:36,401 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-01-20 22:08:36,402 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-01-20 22:08:36,402 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-01-20 22:08:36,403 INFO  L98         SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf
[2018-01-20 22:08:36,412 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-01-20 22:08:36,413 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-01-20 22:08:36,413 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-01-20 22:08:36,414 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-01-20 22:08:36,414 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-01-20 22:08:36,414 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=VPDomain
[2018-01-20 22:08:36,414 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-01-20 22:08:36,415 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-01-20 22:08:36,415 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-01-20 22:08:36,415 INFO  L133        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2018-01-20 22:08:36,415 INFO  L133        SettingsManager]:  * Check allocation purity=true
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-01-20 22:08:36,416 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-01-20 22:08:36,417 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-01-20 22:08:36,417 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-01-20 22:08:36,417 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-01-20 22:08:36,417 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-01-20 22:08:36,417 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-01-20 22:08:36,418 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-01-20 22:08:36,418 INFO  L133        SettingsManager]:  * Add additional assume for each assert=false
[2018-01-20 22:08:36,418 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-01-20 22:08:36,418 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-20 22:08:36,418 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * Interpolant automaton=TWOTRACK
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * Stop after first violation was found=false
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-01-20 22:08:36,419 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-01-20 22:08:36,420 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-01-20 22:08:36,420 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-01-20 22:08:36,421 INFO  L131        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-01-20 22:08:36,421 INFO  L133        SettingsManager]:  * TransformationType=HEAP_SEPARATOR
[2018-01-20 22:08:36,455 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-01-20 22:08:36,467 INFO  L266   ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-01-20 22:08:36,471 INFO  L222   ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-01-20 22:08:36,472 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-01-20 22:08:36,473 INFO  L276        PluginConnector]: CDTParser initialized
[2018-01-20 22:08:36,474 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i
[2018-01-20 22:08:36,671 INFO  L304   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-01-20 22:08:36,676 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2018-01-20 22:08:36,677 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-01-20 22:08:36,677 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-01-20 22:08:36,684 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-01-20 22:08:36,685 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,688 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c517b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36, skipping insertion in model container
[2018-01-20 22:08:36,689 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,708 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-20 22:08:36,747 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-20 22:08:36,871 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-20 22:08:36,887 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-20 22:08:36,892 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36 WrapperNode
[2018-01-20 22:08:36,892 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-01-20 22:08:36,893 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-01-20 22:08:36,893 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-01-20 22:08:36,893 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-01-20 22:08:36,907 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,907 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,918 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,918 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,922 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,924 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,925 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
[2018-01-20 22:08:36,927 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-01-20 22:08:36,927 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-01-20 22:08:36,927 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-01-20 22:08:36,927 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-01-20 22:08:36,928 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (1/1) ...
No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-20 22:08:36,977 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-01-20 22:08:36,977 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-01-20 22:08:36,977 INFO  L136     BoogieDeclarations]: Found implementation of procedure append
[2018-01-20 22:08:36,977 INFO  L136     BoogieDeclarations]: Found implementation of procedure main
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure malloc
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure free
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure append
[2018-01-20 22:08:36,978 INFO  L128     BoogieDeclarations]: Found specification of procedure main
[2018-01-20 22:08:36,979 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-01-20 22:08:36,979 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-01-20 22:08:37,231 INFO  L257             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-01-20 22:08:37,231 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:08:37 BoogieIcfgContainer
[2018-01-20 22:08:37,232 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-01-20 22:08:37,232 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-01-20 22:08:37,232 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-01-20 22:08:37,234 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-01-20 22:08:37,234 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:08:36" (1/3) ...
[2018-01-20 22:08:37,235 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d13f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:08:37, skipping insertion in model container
[2018-01-20 22:08:37,235 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:08:36" (2/3) ...
[2018-01-20 22:08:37,235 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d13f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:08:37, skipping insertion in model container
[2018-01-20 22:08:37,236 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:08:37" (3/3) ...
[2018-01-20 22:08:37,237 INFO  L105   eAbstractionObserver]: Analyzing ICFG test-0232_1_false-valid-memtrack_true-termination.i
[2018-01-20 22:08:37,243 INFO  L130   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-01-20 22:08:37,249 INFO  L142   ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations.
[2018-01-20 22:08:37,291 INFO  L322      AbstractCegarLoop]: Interprodecural is true
[2018-01-20 22:08:37,292 INFO  L323      AbstractCegarLoop]: Hoare is true
[2018-01-20 22:08:37,292 INFO  L324      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-20 22:08:37,292 INFO  L325      AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-20 22:08:37,292 INFO  L326      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-20 22:08:37,292 INFO  L327      AbstractCegarLoop]: Difference is false
[2018-01-20 22:08:37,293 INFO  L328      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-20 22:08:37,293 INFO  L333      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation========
[2018-01-20 22:08:37,294 INFO  L87    2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-20 22:08:37,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states.
[2018-01-20 22:08:37,322 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2018-01-20 22:08:37,322 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:37,323 INFO  L322         BasicCegarLoop]: trace histogram [1, 1, 1]
[2018-01-20 22:08:37,324 INFO  L371      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]===
[2018-01-20 22:08:37,329 INFO  L82        PathProgramCache]: Analyzing trace with hash 123971, now seen corresponding path program 1 times
[2018-01-20 22:08:37,331 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:37,332 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:37,373 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,374 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:37,374 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-20 22:08:37,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-20 22:08:37,425 INFO  L381         BasicCegarLoop]: Counterexample might be feasible
[2018-01-20 22:08:37,434 WARN  L343   cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-01-20 22:08:37,442 INFO  L322      AbstractCegarLoop]: Interprodecural is true
[2018-01-20 22:08:37,442 INFO  L323      AbstractCegarLoop]: Hoare is true
[2018-01-20 22:08:37,442 INFO  L324      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-20 22:08:37,442 INFO  L325      AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-20 22:08:37,443 INFO  L326      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-20 22:08:37,443 INFO  L327      AbstractCegarLoop]: Difference is false
[2018-01-20 22:08:37,443 INFO  L328      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-20 22:08:37,443 INFO  L333      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation========
[2018-01-20 22:08:37,443 INFO  L87    2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-20 22:08:37,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states.
[2018-01-20 22:08:37,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-01-20 22:08:37,448 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:37,448 INFO  L322         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:37,448 INFO  L371      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]===
[2018-01-20 22:08:37,449 INFO  L82        PathProgramCache]: Analyzing trace with hash -532280886, now seen corresponding path program 1 times
[2018-01-20 22:08:37,449 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:37,449 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:37,450 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,451 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:37,451 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:37,473 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:37,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:37,516 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:37,516 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-01-20 22:08:37,517 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-01-20 22:08:37,528 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-01-20 22:08:37,529 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-20 22:08:37,531 INFO  L87              Difference]: Start difference. First operand 66 states. Second operand 2 states.
[2018-01-20 22:08:37,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:37,636 INFO  L93              Difference]: Finished difference Result 99 states and 108 transitions.
[2018-01-20 22:08:37,636 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-01-20 22:08:37,637 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 17
[2018-01-20 22:08:37,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:37,648 INFO  L225             Difference]: With dead ends: 99
[2018-01-20 22:08:37,648 INFO  L226             Difference]: Without dead ends: 62
[2018-01-20 22:08:37,652 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-20 22:08:37,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2018-01-20 22:08:37,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2018-01-20 22:08:37,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2018-01-20 22:08:37,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions.
[2018-01-20 22:08:37,693 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 17
[2018-01-20 22:08:37,693 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:37,693 INFO  L432      AbstractCegarLoop]: Abstraction has 62 states and 66 transitions.
[2018-01-20 22:08:37,693 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-01-20 22:08:37,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions.
[2018-01-20 22:08:37,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2018-01-20 22:08:37,694 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:37,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:37,695 INFO  L371      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]===
[2018-01-20 22:08:37,695 INFO  L82        PathProgramCache]: Analyzing trace with hash -1810255776, now seen corresponding path program 1 times
[2018-01-20 22:08:37,695 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:37,695 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:37,696 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,696 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:37,696 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:37,738 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:37,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:37,824 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:37,824 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-20 22:08:37,825 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-01-20 22:08:37,826 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-01-20 22:08:37,826 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-20 22:08:37,826 INFO  L87              Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states.
[2018-01-20 22:08:37,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:37,904 INFO  L93              Difference]: Finished difference Result 90 states and 95 transitions.
[2018-01-20 22:08:37,905 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-01-20 22:08:37,905 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 37
[2018-01-20 22:08:37,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:37,908 INFO  L225             Difference]: With dead ends: 90
[2018-01-20 22:08:37,908 INFO  L226             Difference]: Without dead ends: 61
[2018-01-20 22:08:37,909 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-20 22:08:37,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2018-01-20 22:08:37,921 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58.
[2018-01-20 22:08:37,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2018-01-20 22:08:37,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions.
[2018-01-20 22:08:37,923 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 37
[2018-01-20 22:08:37,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:37,924 INFO  L432      AbstractCegarLoop]: Abstraction has 58 states and 60 transitions.
[2018-01-20 22:08:37,924 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-01-20 22:08:37,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions.
[2018-01-20 22:08:37,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2018-01-20 22:08:37,925 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:37,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:37,926 INFO  L371      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]===
[2018-01-20 22:08:37,926 INFO  L82        PathProgramCache]: Analyzing trace with hash 60106891, now seen corresponding path program 1 times
[2018-01-20 22:08:37,926 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:37,926 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:37,927 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,927 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:37,927 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:37,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:37,959 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:38,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:38,213 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:38,213 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2018-01-20 22:08:38,214 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-01-20 22:08:38,214 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-01-20 22:08:38,214 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2018-01-20 22:08:38,214 INFO  L87              Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 10 states.
[2018-01-20 22:08:38,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:38,581 INFO  L93              Difference]: Finished difference Result 65 states and 68 transitions.
[2018-01-20 22:08:38,581 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2018-01-20 22:08:38,581 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 46
[2018-01-20 22:08:38,582 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:38,582 INFO  L225             Difference]: With dead ends: 65
[2018-01-20 22:08:38,582 INFO  L226             Difference]: Without dead ends: 0
[2018-01-20 22:08:38,583 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2018-01-20 22:08:38,583 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2018-01-20 22:08:38,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2018-01-20 22:08:38,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2018-01-20 22:08:38,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2018-01-20 22:08:38,584 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46
[2018-01-20 22:08:38,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:38,585 INFO  L432      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2018-01-20 22:08:38,585 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-01-20 22:08:38,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2018-01-20 22:08:38,585 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2018-01-20 22:08:38,588 INFO  L322      AbstractCegarLoop]: Interprodecural is true
[2018-01-20 22:08:38,589 INFO  L323      AbstractCegarLoop]: Hoare is true
[2018-01-20 22:08:38,589 INFO  L324      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-20 22:08:38,589 INFO  L325      AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-20 22:08:38,589 INFO  L326      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-20 22:08:38,589 INFO  L327      AbstractCegarLoop]: Difference is false
[2018-01-20 22:08:38,589 INFO  L328      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-20 22:08:38,589 INFO  L333      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation========
[2018-01-20 22:08:38,589 INFO  L87    2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-20 22:08:38,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states.
[2018-01-20 22:08:38,593 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-01-20 22:08:38,593 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:38,593 INFO  L322         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:38,593 INFO  L371      AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]===
[2018-01-20 22:08:38,593 INFO  L82        PathProgramCache]: Analyzing trace with hash -1685468214, now seen corresponding path program 1 times
[2018-01-20 22:08:38,593 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:38,594 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:38,595 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,595 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:38,595 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:38,602 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:38,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:38,610 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:38,610 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-01-20 22:08:38,610 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-01-20 22:08:38,611 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-01-20 22:08:38,611 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-20 22:08:38,611 INFO  L87              Difference]: Start difference. First operand 66 states. Second operand 2 states.
[2018-01-20 22:08:38,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:38,616 INFO  L93              Difference]: Finished difference Result 99 states and 108 transitions.
[2018-01-20 22:08:38,616 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-01-20 22:08:38,616 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 15
[2018-01-20 22:08:38,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:38,617 INFO  L225             Difference]: With dead ends: 99
[2018-01-20 22:08:38,617 INFO  L226             Difference]: Without dead ends: 60
[2018-01-20 22:08:38,618 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-20 22:08:38,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2018-01-20 22:08:38,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2018-01-20 22:08:38,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2018-01-20 22:08:38,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions.
[2018-01-20 22:08:38,624 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 15
[2018-01-20 22:08:38,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:38,624 INFO  L432      AbstractCegarLoop]: Abstraction has 60 states and 64 transitions.
[2018-01-20 22:08:38,624 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-01-20 22:08:38,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions.
[2018-01-20 22:08:38,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2018-01-20 22:08:38,625 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:38,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:38,626 INFO  L371      AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]===
[2018-01-20 22:08:38,626 INFO  L82        PathProgramCache]: Analyzing trace with hash 337780704, now seen corresponding path program 1 times
[2018-01-20 22:08:38,626 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:38,626 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:38,627 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,627 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:38,627 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:38,643 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:38,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:38,679 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:38,679 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-20 22:08:38,680 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-01-20 22:08:38,680 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-01-20 22:08:38,680 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-20 22:08:38,680 INFO  L87              Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states.
[2018-01-20 22:08:38,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:38,714 INFO  L93              Difference]: Finished difference Result 86 states and 91 transitions.
[2018-01-20 22:08:38,715 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-01-20 22:08:38,715 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 35
[2018-01-20 22:08:38,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:38,716 INFO  L225             Difference]: With dead ends: 86
[2018-01-20 22:08:38,716 INFO  L226             Difference]: Without dead ends: 59
[2018-01-20 22:08:38,717 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-20 22:08:38,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-01-20 22:08:38,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56.
[2018-01-20 22:08:38,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2018-01-20 22:08:38,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions.
[2018-01-20 22:08:38,723 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35
[2018-01-20 22:08:38,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:38,724 INFO  L432      AbstractCegarLoop]: Abstraction has 56 states and 58 transitions.
[2018-01-20 22:08:38,724 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-01-20 22:08:38,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions.
[2018-01-20 22:08:38,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2018-01-20 22:08:38,725 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:38,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-20 22:08:38,726 INFO  L371      AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]===
[2018-01-20 22:08:38,726 INFO  L82        PathProgramCache]: Analyzing trace with hash -303847733, now seen corresponding path program 1 times
[2018-01-20 22:08:38,726 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:38,726 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:38,727 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,727 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:38,727 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:38,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-20 22:08:38,745 WARN  L137   erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level).  Set option :produce-proofs to true to get complete proofs.
[2018-01-20 22:08:38,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-20 22:08:38,950 INFO  L320   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-20 22:08:38,950 INFO  L335   seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2018-01-20 22:08:38,950 INFO  L409      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-01-20 22:08:38,951 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-01-20 22:08:38,951 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2018-01-20 22:08:38,951 INFO  L87              Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 10 states.
[2018-01-20 22:08:39,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-20 22:08:39,228 INFO  L93              Difference]: Finished difference Result 63 states and 66 transitions.
[2018-01-20 22:08:39,228 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2018-01-20 22:08:39,228 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 44
[2018-01-20 22:08:39,228 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-20 22:08:39,228 INFO  L225             Difference]: With dead ends: 63
[2018-01-20 22:08:39,229 INFO  L226             Difference]: Without dead ends: 0
[2018-01-20 22:08:39,229 INFO  L525         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2018-01-20 22:08:39,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2018-01-20 22:08:39,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2018-01-20 22:08:39,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2018-01-20 22:08:39,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2018-01-20 22:08:39,230 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44
[2018-01-20 22:08:39,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-01-20 22:08:39,230 INFO  L432      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2018-01-20 22:08:39,230 INFO  L433      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-01-20 22:08:39,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2018-01-20 22:08:39,231 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2018-01-20 22:08:39,232 INFO  L322      AbstractCegarLoop]: Interprodecural is true
[2018-01-20 22:08:39,232 INFO  L323      AbstractCegarLoop]: Hoare is true
[2018-01-20 22:08:39,232 INFO  L324      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-20 22:08:39,232 INFO  L325      AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-20 22:08:39,232 INFO  L326      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-20 22:08:39,232 INFO  L327      AbstractCegarLoop]: Difference is false
[2018-01-20 22:08:39,232 INFO  L328      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-20 22:08:39,233 INFO  L333      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation========
[2018-01-20 22:08:39,233 INFO  L87    2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-20 22:08:39,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states.
[2018-01-20 22:08:39,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2018-01-20 22:08:39,236 INFO  L314         BasicCegarLoop]: Found error trace
[2018-01-20 22:08:39,236 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]
[2018-01-20 22:08:39,236 INFO  L371      AbstractCegarLoop]: === Iteration 1 === [appendErr0EnsuresViolation]===
[2018-01-20 22:08:39,236 INFO  L82        PathProgramCache]: Analyzing trace with hash -70755379, now seen corresponding path program 1 times
[2018-01-20 22:08:39,237 INFO  L209   onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-20 22:08:39,237 INFO  L67    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-20 22:08:39,238 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:39,238 INFO  L101   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-20 22:08:39,238 INFO  L117   rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-20 22:08:39,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-20 22:08:39,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-20 22:08:39,275 INFO  L381         BasicCegarLoop]: Counterexample might be feasible
[2018-01-20 22:08:39,281 WARN  L343   cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-01-20 22:08:39,286 WARN  L343   cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-01-20 22:08:39,298 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 10:08:39 BoogieIcfgContainer
[2018-01-20 22:08:39,298 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-01-20 22:08:39,299 INFO  L168              Benchmark]: Toolchain (without parser) took 2627.99 ms. Allocated memory was 304.6 MB in the beginning and 482.3 MB in the end (delta: 177.7 MB). Free memory was 262.9 MB in the beginning and 388.7 MB in the end (delta: -125.7 MB). Peak memory consumption was 52.0 MB. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,301 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,301 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 215.81 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,301 INFO  L168              Benchmark]: Boogie Preprocessor took 33.79 ms. Allocated memory is still 304.6 MB. Free memory was 251.9 MB in the beginning and 249.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,301 INFO  L168              Benchmark]: RCFGBuilder took 304.58 ms. Allocated memory is still 304.6 MB. Free memory was 249.9 MB in the beginning and 228.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,302 INFO  L168              Benchmark]: TraceAbstraction took 2066.32 ms. Allocated memory was 304.6 MB in the beginning and 482.3 MB in the end (delta: 177.7 MB). Free memory was 228.0 MB in the beginning and 388.7 MB in the end (delta: -160.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 5.3 GB.
[2018-01-20 22:08:39,303 INFO  L344   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB.
 * CACSL2BoogieTranslator took 215.81 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB.
 * Boogie Preprocessor took 33.79 ms. Allocated memory is still 304.6 MB. Free memory was 251.9 MB in the beginning and 249.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
 * RCFGBuilder took 304.58 ms. Allocated memory is still 304.6 MB. Free memory was 249.9 MB in the beginning and 228.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB.
 * TraceAbstraction took 2066.32 ms. Allocated memory was 304.6 MB in the beginning and 482.3 MB in the end (delta: 177.7 MB). Free memory was 228.0 MB in the beginning and 388.7 MB in the end (delta: -160.6 MB). Peak memory consumption was 17.1 MB. 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)
 * 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: 
[L620]        int c = 0;
        VAL   [\old(c)=2, c=0]

  - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation
    CFG has 4 procedures, 66 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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
  - PositiveResult [Line: 1]: 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: ULTIMATE.startErr0EnsuresViolation
    CFG has 4 procedures, 66 locations, 4 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 49 SDslu, 185 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 21244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available
  - PositiveResult [Line: 635]: all allocated memory was freed
    For all program executions holds that all allocated memory was freed at this location
  - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation
    CFG has 4 procedures, 66 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 49 SDslu, 181 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 20078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available
  - CounterExampleResult [Line: 625]: not all allocated memory was freed
    not all allocated memory was freed
We found a FailurePath: 
[L620]                         int c = 0;
             VAL               [\old(c)=0, c=0]
[L637]       FCALL             struct item *list = ((void *)0);
             VAL               [\old(c)=0, c=0, list={9:0}]
[L638]                         int length = 0;
             VAL               [\old(c)=0, c=0, length=0, list={9:0}]
[L640]       CALL              append(&list)
             VAL               [\old(c)=0, c=0, plist={9:0}]
[L627]                         c++
             VAL               [\old(c)=0, c=1, plist={9:0}, plist={9:0}]
[L628]       EXPR, FCALL       malloc(sizeof *item)
             VAL               [\old(c)=0, c=1, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L628]                         struct item *item = malloc(sizeof *item);
             VAL               [\old(c)=0, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L629]       EXPR, FCALL       \read(**plist)
             VAL               [\old(c)=0, \read(**plist)={0:0}, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L629]       FCALL             item->next = *plist
             VAL               [\old(c)=0, \read(**plist)={0:0}, c=1, item={11:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L630]       EXPR, FCALL       item->next
             VAL               [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L630-L632]  COND FALSE, EXPR  !((item->next)
        ? item->next->data
        : malloc(sizeof *item))
             VAL               [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L632]       EXPR, FCALL       malloc(sizeof *item)
             VAL               [\old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L630-L632]  EXPR              (item->next)
        ? item->next->data
        : malloc(sizeof *item)
             VAL               [(item->next)
        ? item->next->data
        : malloc(sizeof *item)={12:0}, \old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L630-L632]  FCALL             item->data = (item->next)
        ? item->next->data
        : malloc(sizeof *item)
             VAL               [(item->next)
        ? item->next->data
        : malloc(sizeof *item)={12:0}, \old(c)=0, c=1, item={11:0}, item->next={0:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]
[L633]       FCALL             *plist = item
             VAL               [\old(c)=0, c=1, item={11:0}, malloc(sizeof *item)={12:0}, malloc(sizeof *item)={11:0}, plist={9:0}, plist={9:0}]

  - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation
    CFG has 4 procedures, 66 locations, 4 error locations. UNSAFE Result, 0.0s 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=66occurred 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
RESULT: Ultimate proved your program to be incorrect!
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_22-08-39-312.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_22-08-39-312.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_22-08-39-312.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_22-08-39-312.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_22-08-39-312.csv
Received shutdown request...