./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 5842f4b8
Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3aee1e8d9b723b18f218b6c1185554e637930c5d
.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.1.23-5842f4b
[2018-11-18 15:40:45,888 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-11-18 15:40:45,889 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-11-18 15:40:45,899 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-11-18 15:40:45,899 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-18 15:40:45,900 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-11-18 15:40:45,901 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-11-18 15:40:45,902 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-11-18 15:40:45,903 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-11-18 15:40:45,904 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-11-18 15:40:45,904 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-11-18 15:40:45,905 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-11-18 15:40:45,905 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-11-18 15:40:45,906 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-11-18 15:40:45,907 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-11-18 15:40:45,907 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-11-18 15:40:45,908 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-18 15:40:45,909 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-18 15:40:45,911 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-11-18 15:40:45,912 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-11-18 15:40:45,913 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-11-18 15:40:45,914 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-11-18 15:40:45,915 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-11-18 15:40:45,916 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-11-18 15:40:45,916 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-11-18 15:40:45,916 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-11-18 15:40:45,917 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-11-18 15:40:45,918 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-11-18 15:40:45,918 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-11-18 15:40:45,919 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-11-18 15:40:45,919 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-11-18 15:40:45,920 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-11-18 15:40:45,920 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-11-18 15:40:45,920 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-11-18 15:40:45,921 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-11-18 15:40:45,921 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-11-18 15:40:45,922 INFO  L98         SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2018-11-18 15:40:45,932 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-18 15:40:45,933 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-18 15:40:45,933 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-18 15:40:45,933 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-11-18 15:40:45,934 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-11-18 15:40:45,934 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-11-18 15:40:45,934 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-11-18 15:40:45,935 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-18 15:40:45,935 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-11-18 15:40:45,935 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-18 15:40:45,935 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-11-18 15:40:45,935 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-18 15:40:45,935 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * Use constant arrays=true
[2018-11-18 15:40:45,936 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-18 15:40:45,937 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-18 15:40:45,937 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-18 15:40:45,937 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-18 15:40:45,937 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-18 15:40:45,937 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-18 15:40:45,937 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-18 15:40:45,938 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aee1e8d9b723b18f218b6c1185554e637930c5d
[2018-11-18 15:40:45,965 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-18 15:40:45,976 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-18 15:40:45,979 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-18 15:40:45,980 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-18 15:40:45,981 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-18 15:40:45,981 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i
[2018-11-18 15:40:46,039 INFO  L221              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2/FLAGf1a42e448
[2018-11-18 15:40:46,439 INFO  L307              CDTParser]: Found 1 translation units.
[2018-11-18 15:40:46,439 INFO  L161              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i
[2018-11-18 15:40:46,451 INFO  L355              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2/FLAGf1a42e448
[2018-11-18 15:40:46,463 INFO  L363              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/data/380a8f63c/5ab0e6ff2470429ca730ae02d43933d2
[2018-11-18 15:40:46,466 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-18 15:40:46,467 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-18 15:40:46,467 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-18 15:40:46,467 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-18 15:40:46,470 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-18 15:40:46,471 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,473 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44021729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46, skipping insertion in model container
[2018-11-18 15:40:46,473 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,480 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-18 15:40:46,513 INFO  L176         MainTranslator]: Built tables and reachable declarations
[2018-11-18 15:40:46,721 INFO  L201          PostProcessor]: Analyzing one entry point: main
[2018-11-18 15:40:46,728 INFO  L191         MainTranslator]: Completed pre-run
[2018-11-18 15:40:46,763 INFO  L201          PostProcessor]: Analyzing one entry point: main
[2018-11-18 15:40:46,854 INFO  L195         MainTranslator]: Completed translation
[2018-11-18 15:40:46,854 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46 WrapperNode
[2018-11-18 15:40:46,854 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-18 15:40:46,855 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-18 15:40:46,855 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-18 15:40:46,855 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-18 15:40:46,867 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,867 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,876 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,876 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,885 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,890 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,893 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
[2018-11-18 15:40:46,897 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-18 15:40:46,897 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-18 15:40:46,898 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-18 15:40:46,898 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-18 15:40:46,898 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/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
[2018-11-18 15:40:46,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-11-18 15:40:46,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-18 15:40:46,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-11-18 15:40:46,937 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2018-11-18 15:40:46,937 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2018-11-18 15:40:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2018-11-18 15:40:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2018-11-18 15:40:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2018-11-18 15:40:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2018-11-18 15:40:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2018-11-18 15:40:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2018-11-18 15:40:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2018-11-18 15:40:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2018-11-18 15:40:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2018-11-18 15:40:46,943 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2018-11-18 15:40:46,944 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2018-11-18 15:40:46,945 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2018-11-18 15:40:46,946 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-18 15:40:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2018-11-18 15:40:47,225 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-18 15:40:47,226 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47 BoogieIcfgContainer
[2018-11-18 15:40:47,226 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-18 15:40:47,226 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-18 15:40:47,226 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-18 15:40:47,228 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-18 15:40:47,228 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:40:46" (1/3) ...
[2018-11-18 15:40:47,229 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432803b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:40:47, skipping insertion in model container
[2018-11-18 15:40:47,229 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:40:46" (2/3) ...
[2018-11-18 15:40:47,230 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432803b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:40:47, skipping insertion in model container
[2018-11-18 15:40:47,230 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47" (3/3) ...
[2018-11-18 15:40:47,231 INFO  L112   eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i
[2018-11-18 15:40:47,239 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-18 15:40:47,245 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations.
[2018-11-18 15:40:47,257 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2018-11-18 15:40:47,278 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-11-18 15:40:47,279 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-18 15:40:47,279 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-18 15:40:47,279 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-18 15:40:47,279 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-18 15:40:47,279 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-18 15:40:47,279 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-18 15:40:47,279 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-18 15:40:47,280 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-18 15:40:47,292 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states.
[2018-11-18 15:40:47,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-11-18 15:40:47,296 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:47,296 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 15:40:47,298 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:47,302 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:47,302 INFO  L82        PathProgramCache]: Analyzing trace with hash -2120402635, now seen corresponding path program 1 times
[2018-11-18 15:40:47,304 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:47,305 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:47,356 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,356 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:47,356 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:47,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:47,425 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 15:40:47,425 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-18 15:40:47,428 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-11-18 15:40:47,441 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-11-18 15:40:47,442 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-11-18 15:40:47,444 INFO  L87              Difference]: Start difference. First operand 38 states. Second operand 2 states.
[2018-11-18 15:40:47,459 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 15:40:47,460 INFO  L93              Difference]: Finished difference Result 66 states and 97 transitions.
[2018-11-18 15:40:47,460 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-11-18 15:40:47,461 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 11
[2018-11-18 15:40:47,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 15:40:47,470 INFO  L225             Difference]: With dead ends: 66
[2018-11-18 15:40:47,470 INFO  L226             Difference]: Without dead ends: 30
[2018-11-18 15:40:47,474 INFO  L604         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
[2018-11-18 15:40:47,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2018-11-18 15:40:47,502 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2018-11-18 15:40:47,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-11-18 15:40:47,504 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2018-11-18 15:40:47,505 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11
[2018-11-18 15:40:47,505 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 15:40:47,505 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2018-11-18 15:40:47,506 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-11-18 15:40:47,506 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2018-11-18 15:40:47,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-11-18 15:40:47,506 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:47,506 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 15:40:47,506 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:47,506 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:47,507 INFO  L82        PathProgramCache]: Analyzing trace with hash 1530455017, now seen corresponding path program 1 times
[2018-11-18 15:40:47,507 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:47,507 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:47,508 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,509 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:47,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:47,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:47,582 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 15:40:47,582 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-18 15:40:47,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-18 15:40:47,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-18 15:40:47,583 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-11-18 15:40:47,583 INFO  L87              Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states.
[2018-11-18 15:40:47,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 15:40:47,646 INFO  L93              Difference]: Finished difference Result 39 states and 43 transitions.
[2018-11-18 15:40:47,646 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-18 15:40:47,646 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 13
[2018-11-18 15:40:47,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 15:40:47,647 INFO  L225             Difference]: With dead ends: 39
[2018-11-18 15:40:47,647 INFO  L226             Difference]: Without dead ends: 37
[2018-11-18 15:40:47,648 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-11-18 15:40:47,649 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-11-18 15:40:47,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28.
[2018-11-18 15:40:47,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-11-18 15:40:47,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2018-11-18 15:40:47,653 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13
[2018-11-18 15:40:47,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 15:40:47,653 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2018-11-18 15:40:47,653 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-18 15:40:47,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2018-11-18 15:40:47,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-11-18 15:40:47,654 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:47,654 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 15:40:47,655 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:47,655 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:47,655 INFO  L82        PathProgramCache]: Analyzing trace with hash -1583454493, now seen corresponding path program 1 times
[2018-11-18 15:40:47,655 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:47,655 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:47,657 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,657 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:47,657 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:47,791 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:47,792 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 15:40:47,792 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-18 15:40:47,792 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-18 15:40:47,792 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-18 15:40:47,793 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-18 15:40:47,793 INFO  L87              Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states.
[2018-11-18 15:40:47,880 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 15:40:47,880 INFO  L93              Difference]: Finished difference Result 59 states and 66 transitions.
[2018-11-18 15:40:47,880 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-11-18 15:40:47,881 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2018-11-18 15:40:47,881 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 15:40:47,881 INFO  L225             Difference]: With dead ends: 59
[2018-11-18 15:40:47,881 INFO  L226             Difference]: Without dead ends: 57
[2018-11-18 15:40:47,882 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2018-11-18 15:40:47,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-11-18 15:40:47,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38.
[2018-11-18 15:40:47,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2018-11-18 15:40:47,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions.
[2018-11-18 15:40:47,887 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16
[2018-11-18 15:40:47,887 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 15:40:47,887 INFO  L480      AbstractCegarLoop]: Abstraction has 38 states and 43 transitions.
[2018-11-18 15:40:47,887 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-18 15:40:47,887 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions.
[2018-11-18 15:40:47,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-11-18 15:40:47,888 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:47,888 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 15:40:47,888 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:47,888 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:47,889 INFO  L82        PathProgramCache]: Analyzing trace with hash 2124632458, now seen corresponding path program 1 times
[2018-11-18 15:40:47,889 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:47,889 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:47,890 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,890 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:47,890 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:47,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:48,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:48,056 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-11-18 15:40:48,057 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-11-18 15:40:48,072 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:48,091 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:48,097 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-11-18 15:40:48,131 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2018-11-18 15:40:48,131 INFO  L267         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,151 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10
[2018-11-18 15:40:48,157 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9
[2018-11-18 15:40:48,157 INFO  L267         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,159 INFO  L267         ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,170 INFO  L267         ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,170 INFO  L202         ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:23, output treesize:18
[2018-11-18 15:40:48,178 INFO  L700             Elim1Store]: detected not equals via solver
[2018-11-18 15:40:48,178 INFO  L700             Elim1Store]: detected not equals via solver
[2018-11-18 15:40:48,179 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21
[2018-11-18 15:40:48,180 INFO  L267         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,187 INFO  L267         ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,187 INFO  L202         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27
[2018-11-18 15:40:48,220 INFO  L700             Elim1Store]: detected not equals via solver
[2018-11-18 15:40:48,222 INFO  L700             Elim1Store]: detected not equals via solver
[2018-11-18 15:40:48,223 INFO  L700             Elim1Store]: detected not equals via solver
[2018-11-18 15:40:48,223 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13
[2018-11-18 15:40:48,224 INFO  L267         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,238 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37
[2018-11-18 15:40:48,241 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9
[2018-11-18 15:40:48,241 INFO  L267         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,255 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41
[2018-11-18 15:40:48,257 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9
[2018-11-18 15:40:48,257 INFO  L267         ElimStorePlain]: Start of recursive call 6:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,265 INFO  L267         ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,269 INFO  L267         ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,286 INFO  L267         ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars,  End of recursive call: 4 dim-0 vars,  and 1 xjuncts.
[2018-11-18 15:40:48,287 INFO  L202         ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:65, output treesize:43
[2018-11-18 15:40:48,354 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37
[2018-11-18 15:40:48,357 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2018-11-18 15:40:48,357 INFO  L267         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,368 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1
[2018-11-18 15:40:48,368 INFO  L267         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,374 INFO  L477             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1
[2018-11-18 15:40:48,375 INFO  L267         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,377 INFO  L267         ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,388 INFO  L267         ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2018-11-18 15:40:48,389 INFO  L202         ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3
[2018-11-18 15:40:48,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:48,415 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-11-18 15:40:48,415 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2018-11-18 15:40:48,416 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-11-18 15:40:48,416 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-11-18 15:40:48,416 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2018-11-18 15:40:48,416 INFO  L87              Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 10 states.
[2018-11-18 15:40:48,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 15:40:48,685 INFO  L93              Difference]: Finished difference Result 80 states and 92 transitions.
[2018-11-18 15:40:48,685 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-11-18 15:40:48,685 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 20
[2018-11-18 15:40:48,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 15:40:48,686 INFO  L225             Difference]: With dead ends: 80
[2018-11-18 15:40:48,686 INFO  L226             Difference]: Without dead ends: 78
[2018-11-18 15:40:48,687 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272
[2018-11-18 15:40:48,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2018-11-18 15:40:48,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 26.
[2018-11-18 15:40:48,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-11-18 15:40:48,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions.
[2018-11-18 15:40:48,691 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20
[2018-11-18 15:40:48,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 15:40:48,691 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 29 transitions.
[2018-11-18 15:40:48,691 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-11-18 15:40:48,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions.
[2018-11-18 15:40:48,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2018-11-18 15:40:48,692 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:48,692 INFO  L375         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]
[2018-11-18 15:40:48,693 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:48,693 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:48,693 INFO  L82        PathProgramCache]: Analyzing trace with hash -1683545549, now seen corresponding path program 1 times
[2018-11-18 15:40:48,693 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:48,693 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:48,695 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:48,695 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:48,695 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:48,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 15:40:48,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 15:40:48,776 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 15:40:48,776 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-18 15:40:48,776 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-18 15:40:48,776 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-18 15:40:48,776 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-18 15:40:48,777 INFO  L87              Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states.
[2018-11-18 15:40:48,822 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 15:40:48,822 INFO  L93              Difference]: Finished difference Result 44 states and 49 transitions.
[2018-11-18 15:40:48,822 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-11-18 15:40:48,822 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 22
[2018-11-18 15:40:48,822 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 15:40:48,823 INFO  L225             Difference]: With dead ends: 44
[2018-11-18 15:40:48,823 INFO  L226             Difference]: Without dead ends: 35
[2018-11-18 15:40:48,823 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-11-18 15:40:48,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-11-18 15:40:48,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29.
[2018-11-18 15:40:48,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2018-11-18 15:40:48,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2018-11-18 15:40:48,828 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22
[2018-11-18 15:40:48,828 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 15:40:48,828 INFO  L480      AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2018-11-18 15:40:48,828 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-18 15:40:48,828 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2018-11-18 15:40:48,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2018-11-18 15:40:48,829 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 15:40:48,829 INFO  L375         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]
[2018-11-18 15:40:48,829 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 15:40:48,829 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 15:40:48,829 INFO  L82        PathProgramCache]: Analyzing trace with hash -1683485967, now seen corresponding path program 1 times
[2018-11-18 15:40:48,829 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 15:40:48,829 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 15:40:48,830 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:48,830 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 15:40:48,830 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 15:40:48,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-11-18 15:40:48,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-11-18 15:40:48,856 INFO  L442         BasicCegarLoop]: Counterexample might be feasible
[2018-11-18 15:40:48,877 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:40:48 BoogieIcfgContainer
[2018-11-18 15:40:48,877 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-18 15:40:48,877 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2018-11-18 15:40:48,877 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2018-11-18 15:40:48,878 INFO  L276        PluginConnector]: Witness Printer initialized
[2018-11-18 15:40:48,878 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:40:47" (3/4) ...
[2018-11-18 15:40:48,880 INFO  L138         WitnessPrinter]: Generating witness for reachability counterexample
[2018-11-18 15:40:48,911 INFO  L145         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_78647983-1307-4c43-aaa6-9c4b8d55567c/bin-2019/uautomizer/witness.graphml
[2018-11-18 15:40:48,911 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2018-11-18 15:40:48,912 INFO  L168              Benchmark]: Toolchain (without parser) took 2445.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 872.4 MB in the end (delta: 84.1 MB). Peak memory consumption was 228.3 MB. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,913 INFO  L168              Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,913 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 387.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,913 INFO  L168              Benchmark]: Boogie Preprocessor took 42.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,914 INFO  L168              Benchmark]: RCFGBuilder took 328.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,914 INFO  L168              Benchmark]: TraceAbstraction took 1651.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.4 MB in the end (delta: 202.1 MB). Peak memory consumption was 202.1 MB. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,915 INFO  L168              Benchmark]: Witness Printer took 33.65 ms. Allocated memory is still 1.2 GB. Free memory is still 872.4 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-11-18 15:40:48,917 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 387.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 42.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB.
 * RCFGBuilder took 328.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB.
 * TraceAbstraction took 1651.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.4 MB in the end (delta: 202.1 MB). Peak memory consumption was 202.1 MB. Max. memory is 11.5 GB.
 * Witness Printer took 33.65 ms. Allocated memory is still 1.2 GB. Free memory is still 872.4 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L995]   EXPR, FCALL  malloc(sizeof(SLL))
[L995]                SLL* list = malloc(sizeof(SLL));
[L996]   FCALL        list->next = ((void*)0)
[L997]   FCALL        list->colour = BLACK
[L999]                SLL* end = list;
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1002]  COND FALSE   !(__VERIFIER_nondet_int())
[L1023]               end = ((void*)0)
[L1024]               end = list
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1027]  COND FALSE   !(!(((void*)0) != end))
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1027]  COND FALSE   !(0)
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1028]  EXPR, FCALL  end->colour
         VAL          [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1028]  COND FALSE   !(!(BLACK == end->colour))
[L1028]  COND FALSE   !(0)
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1030]  COND TRUE    ((void*)0) != end
[L1032]  EXPR, FCALL  end->colour
         VAL          [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1032]  COND FALSE   !(RED == end->colour)
[L1038]  EXPR, FCALL  end->next
         VAL          [end={10:0}, end->next={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]
[L1038]  COND TRUE    !(end->next)
[L1038]               __VERIFIER_error()
         VAL          [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 38 locations, 3 error locations. UNSAFE Result, 1.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 151 SDslu, 318 SDs, 0 SdLazy, 229 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 86 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 8 QuantifiedInterpolants, 15401 SizeOfPredicates, 12 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...