./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version f470102c
Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/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 1b149b3cef099476d14a8b122afb66552d0406eb
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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 0.1.25-f470102
[2019-12-07 14:31:49,071 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-12-07 14:31:49,072 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-12-07 14:31:49,079 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-12-07 14:31:49,079 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-12-07 14:31:49,080 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-12-07 14:31:49,081 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-12-07 14:31:49,082 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-12-07 14:31:49,084 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-12-07 14:31:49,084 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-12-07 14:31:49,085 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-12-07 14:31:49,086 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-12-07 14:31:49,086 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-12-07 14:31:49,086 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-12-07 14:31:49,087 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-12-07 14:31:49,088 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-12-07 14:31:49,088 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-12-07 14:31:49,089 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-12-07 14:31:49,091 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-12-07 14:31:49,092 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-12-07 14:31:49,093 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-12-07 14:31:49,094 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-12-07 14:31:49,095 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-12-07 14:31:49,095 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-12-07 14:31:49,097 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-12-07 14:31:49,097 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-12-07 14:31:49,097 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-12-07 14:31:49,097 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-12-07 14:31:49,098 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-12-07 14:31:49,098 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-12-07 14:31:49,098 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-12-07 14:31:49,099 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-12-07 14:31:49,099 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-12-07 14:31:49,100 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-12-07 14:31:49,100 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-12-07 14:31:49,100 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-12-07 14:31:49,101 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-12-07 14:31:49,101 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-12-07 14:31:49,101 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-12-07 14:31:49,101 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-12-07 14:31:49,102 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-12-07 14:31:49,102 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2019-12-07 14:31:49,112 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-12-07 14:31:49,112 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-12-07 14:31:49,113 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-12-07 14:31:49,113 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-12-07 14:31:49,113 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-12-07 14:31:49,113 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-12-07 14:31:49,114 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-12-07 14:31:49,115 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-12-07 14:31:49,115 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-12-07 14:31:49,116 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2019-12-07 14:31:49,116 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/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 -> 1b149b3cef099476d14a8b122afb66552d0406eb
[2019-12-07 14:31:49,215 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-12-07 14:31:49,225 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-12-07 14:31:49,228 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-12-07 14:31:49,229 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-12-07 14:31:49,230 INFO  L275        PluginConnector]: CDTParser initialized
[2019-12-07 14:31:49,230 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/../../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i
[2019-12-07 14:31:49,274 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/data/b8f61731a/8044b8c6ae1242e994a0b162cd06acfc/FLAGdb9fbc9a7
[2019-12-07 14:31:49,593 INFO  L306              CDTParser]: Found 1 translation units.
[2019-12-07 14:31:49,593 INFO  L160              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i
[2019-12-07 14:31:49,597 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/data/b8f61731a/8044b8c6ae1242e994a0b162cd06acfc/FLAGdb9fbc9a7
[2019-12-07 14:31:49,606 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/data/b8f61731a/8044b8c6ae1242e994a0b162cd06acfc
[2019-12-07 14:31:49,608 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-12-07 14:31:49,609 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2019-12-07 14:31:49,610 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-12-07 14:31:49,610 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-12-07 14:31:49,613 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-12-07 14:31:49,614 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,616 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2c5fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49, skipping insertion in model container
[2019-12-07 14:31:49,616 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,623 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-12-07 14:31:49,635 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-12-07 14:31:49,731 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-12-07 14:31:49,733 INFO  L203         MainTranslator]: Completed pre-run
[2019-12-07 14:31:49,775 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-12-07 14:31:49,785 INFO  L208         MainTranslator]: Completed translation
[2019-12-07 14:31:49,786 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49 WrapperNode
[2019-12-07 14:31:49,786 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-12-07 14:31:49,786 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-12-07 14:31:49,786 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-12-07 14:31:49,786 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-12-07 14:31:49,792 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,796 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,812 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-12-07 14:31:49,812 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-12-07 14:31:49,812 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-12-07 14:31:49,812 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-12-07 14:31:49,820 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,820 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,821 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,821 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,823 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,825 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,826 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
[2019-12-07 14:31:49,827 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-12-07 14:31:49,827 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-12-07 14:31:49,827 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-12-07 14:31:49,827 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-12-07 14:31:49,828 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/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
[2019-12-07 14:31:49,868 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-12-07 14:31:49,868 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-12-07 14:31:49,971 INFO  L282             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-12-07 14:31:49,971 INFO  L287             CfgBuilder]: Removed 7 assume(true) statements.
[2019-12-07 14:31:49,972 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:31:49 BoogieIcfgContainer
[2019-12-07 14:31:49,972 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-12-07 14:31:49,973 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-12-07 14:31:49,973 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-12-07 14:31:49,975 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-12-07 14:31:49,975 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:31:49" (1/3) ...
[2019-12-07 14:31:49,975 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdea0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:31:49, skipping insertion in model container
[2019-12-07 14:31:49,975 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:31:49" (2/3) ...
[2019-12-07 14:31:49,976 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdea0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:31:49, skipping insertion in model container
[2019-12-07 14:31:49,976 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:31:49" (3/3) ...
[2019-12-07 14:31:49,977 INFO  L109   eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i
[2019-12-07 14:31:49,983 INFO  L156   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-12-07 14:31:49,987 INFO  L168   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-12-07 14:31:49,994 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-12-07 14:31:50,009 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-12-07 14:31:50,009 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-12-07 14:31:50,009 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-12-07 14:31:50,009 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-12-07 14:31:50,010 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-12-07 14:31:50,010 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-12-07 14:31:50,010 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-12-07 14:31:50,010 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-12-07 14:31:50,019 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states.
[2019-12-07 14:31:50,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2019-12-07 14:31:50,022 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,023 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2019-12-07 14:31:50,023 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:50,027 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:50,027 INFO  L82        PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times
[2019-12-07 14:31:50,033 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:50,033 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404395596]
[2019-12-07 14:31:50,033 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:50,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,108 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404395596]
[2019-12-07 14:31:50,109 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-12-07 14:31:50,109 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-12-07 14:31:50,110 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497560926]
[2019-12-07 14:31:50,113 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-12-07 14:31:50,113 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:50,121 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-12-07 14:31:50,122 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-12-07 14:31:50,123 INFO  L87              Difference]: Start difference. First operand 11 states. Second operand 2 states.
[2019-12-07 14:31:50,133 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:50,133 INFO  L93              Difference]: Finished difference Result 18 states and 21 transitions.
[2019-12-07 14:31:50,133 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-12-07 14:31:50,134 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 5
[2019-12-07 14:31:50,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:50,139 INFO  L225             Difference]: With dead ends: 18
[2019-12-07 14:31:50,139 INFO  L226             Difference]: Without dead ends: 8
[2019-12-07 14:31:50,141 INFO  L630         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
[2019-12-07 14:31:50,152 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2019-12-07 14:31:50,159 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2019-12-07 14:31:50,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2019-12-07 14:31:50,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions.
[2019-12-07 14:31:50,161 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5
[2019-12-07 14:31:50,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:50,161 INFO  L462      AbstractCegarLoop]: Abstraction has 8 states and 9 transitions.
[2019-12-07 14:31:50,161 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-12-07 14:31:50,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions.
[2019-12-07 14:31:50,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2019-12-07 14:31:50,162 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,162 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2019-12-07 14:31:50,162 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:50,162 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:50,162 INFO  L82        PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times
[2019-12-07 14:31:50,162 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:50,163 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488001410]
[2019-12-07 14:31:50,163 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:50,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,201 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488001410]
[2019-12-07 14:31:50,201 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-12-07 14:31:50,201 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-12-07 14:31:50,202 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398926198]
[2019-12-07 14:31:50,203 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-12-07 14:31:50,203 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:50,203 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-12-07 14:31:50,203 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-12-07 14:31:50,204 INFO  L87              Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states.
[2019-12-07 14:31:50,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:50,231 INFO  L93              Difference]: Finished difference Result 13 states and 14 transitions.
[2019-12-07 14:31:50,231 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-12-07 14:31:50,231 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 5
[2019-12-07 14:31:50,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:50,232 INFO  L225             Difference]: With dead ends: 13
[2019-12-07 14:31:50,232 INFO  L226             Difference]: Without dead ends: 9
[2019-12-07 14:31:50,233 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-12-07 14:31:50,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2019-12-07 14:31:50,234 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2019-12-07 14:31:50,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2019-12-07 14:31:50,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2019-12-07 14:31:50,235 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5
[2019-12-07 14:31:50,235 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:50,235 INFO  L462      AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2019-12-07 14:31:50,236 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-12-07 14:31:50,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2019-12-07 14:31:50,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2019-12-07 14:31:50,236 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,236 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2019-12-07 14:31:50,236 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:50,236 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:50,237 INFO  L82        PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times
[2019-12-07 14:31:50,237 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:50,237 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523943673]
[2019-12-07 14:31:50,237 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:50,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,258 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523943673]
[2019-12-07 14:31:50,258 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-12-07 14:31:50,258 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-12-07 14:31:50,258 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913638227]
[2019-12-07 14:31:50,258 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-12-07 14:31:50,258 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:50,259 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-12-07 14:31:50,259 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-12-07 14:31:50,259 INFO  L87              Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states.
[2019-12-07 14:31:50,269 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:50,269 INFO  L93              Difference]: Finished difference Result 18 states and 21 transitions.
[2019-12-07 14:31:50,270 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-12-07 14:31:50,270 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 8
[2019-12-07 14:31:50,270 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:50,270 INFO  L225             Difference]: With dead ends: 18
[2019-12-07 14:31:50,270 INFO  L226             Difference]: Without dead ends: 11
[2019-12-07 14:31:50,271 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-12-07 14:31:50,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2019-12-07 14:31:50,272 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10.
[2019-12-07 14:31:50,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2019-12-07 14:31:50,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions.
[2019-12-07 14:31:50,272 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8
[2019-12-07 14:31:50,272 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:50,273 INFO  L462      AbstractCegarLoop]: Abstraction has 10 states and 11 transitions.
[2019-12-07 14:31:50,273 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-12-07 14:31:50,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions.
[2019-12-07 14:31:50,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2019-12-07 14:31:50,273 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,273 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2019-12-07 14:31:50,273 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:50,273 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:50,273 INFO  L82        PathProgramCache]: Analyzing trace with hash -251232646, now seen corresponding path program 1 times
[2019-12-07 14:31:50,274 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:50,274 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243453105]
[2019-12-07 14:31:50,274 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:50,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,395 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243453105]
[2019-12-07 14:31:50,395 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445778513]
[2019-12-07 14:31:50,395 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:50,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,416 WARN  L262         TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 15 conjunts are in the unsatisfiable core
[2019-12-07 14:31:50,419 INFO  L287         TraceCheckSpWp]: Computing forward predicates...
[2019-12-07 14:31:50,477 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-12-07 14:31:50,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,489 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-12-07 14:31:50,490 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2019-12-07 14:31:50,490 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964168967]
[2019-12-07 14:31:50,490 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-12-07 14:31:50,490 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:50,490 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-12-07 14:31:50,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2019-12-07 14:31:50,491 INFO  L87              Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 12 states.
[2019-12-07 14:31:50,605 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:50,605 INFO  L93              Difference]: Finished difference Result 21 states and 24 transitions.
[2019-12-07 14:31:50,605 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-12-07 14:31:50,606 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 8
[2019-12-07 14:31:50,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:50,606 INFO  L225             Difference]: With dead ends: 21
[2019-12-07 14:31:50,606 INFO  L226             Difference]: Without dead ends: 15
[2019-12-07 14:31:50,607 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240
[2019-12-07 14:31:50,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2019-12-07 14:31:50,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2019-12-07 14:31:50,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2019-12-07 14:31:50,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2019-12-07 14:31:50,609 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8
[2019-12-07 14:31:50,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:50,610 INFO  L462      AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2019-12-07 14:31:50,610 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-12-07 14:31:50,610 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2019-12-07 14:31:50,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2019-12-07 14:31:50,610 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,610 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1]
[2019-12-07 14:31:50,811 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:50,811 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:50,811 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:50,812 INFO  L82        PathProgramCache]: Analyzing trace with hash -1099734127, now seen corresponding path program 1 times
[2019-12-07 14:31:50,812 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:50,812 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830402843]
[2019-12-07 14:31:50,813 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:50,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,862 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830402843]
[2019-12-07 14:31:50,862 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156958488]
[2019-12-07 14:31:50,863 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:50,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:50,907 INFO  L264         TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-12-07 14:31:50,909 INFO  L287         TraceCheckSpWp]: Computing forward predicates...
[2019-12-07 14:31:50,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:50,914 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-12-07 14:31:50,914 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2019-12-07 14:31:50,915 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852386377]
[2019-12-07 14:31:50,915 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-12-07 14:31:50,916 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:50,916 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-12-07 14:31:50,916 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-12-07 14:31:50,917 INFO  L87              Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states.
[2019-12-07 14:31:50,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:50,958 INFO  L93              Difference]: Finished difference Result 22 states and 25 transitions.
[2019-12-07 14:31:50,958 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-12-07 14:31:50,959 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 11
[2019-12-07 14:31:50,959 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:50,960 INFO  L225             Difference]: With dead ends: 22
[2019-12-07 14:31:50,960 INFO  L226             Difference]: Without dead ends: 15
[2019-12-07 14:31:50,961 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-12-07 14:31:50,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2019-12-07 14:31:50,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2019-12-07 14:31:50,967 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2019-12-07 14:31:50,969 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2019-12-07 14:31:50,969 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11
[2019-12-07 14:31:50,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:50,970 INFO  L462      AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2019-12-07 14:31:50,970 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-12-07 14:31:50,970 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2019-12-07 14:31:50,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-12-07 14:31:50,971 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:50,972 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1]
[2019-12-07 14:31:51,172 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:51,173 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:51,173 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:51,174 INFO  L82        PathProgramCache]: Analyzing trace with hash 2050208028, now seen corresponding path program 2 times
[2019-12-07 14:31:51,174 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:51,175 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255207563]
[2019-12-07 14:31:51,175 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:51,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:51,233 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:51,233 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255207563]
[2019-12-07 14:31:51,233 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238387425]
[2019-12-07 14:31:51,233 INFO  L92    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:51,251 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-12-07 14:31:51,251 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-12-07 14:31:51,252 INFO  L264         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-12-07 14:31:51,252 INFO  L287         TraceCheckSpWp]: Computing forward predicates...
[2019-12-07 14:31:51,255 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:51,255 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-12-07 14:31:51,255 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2019-12-07 14:31:51,255 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258876473]
[2019-12-07 14:31:51,255 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-12-07 14:31:51,256 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:51,256 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-12-07 14:31:51,256 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-12-07 14:31:51,256 INFO  L87              Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states.
[2019-12-07 14:31:51,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:51,271 INFO  L93              Difference]: Finished difference Result 24 states and 27 transitions.
[2019-12-07 14:31:51,272 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-12-07 14:31:51,272 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2019-12-07 14:31:51,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:51,272 INFO  L225             Difference]: With dead ends: 24
[2019-12-07 14:31:51,272 INFO  L226             Difference]: Without dead ends: 17
[2019-12-07 14:31:51,272 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-12-07 14:31:51,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2019-12-07 14:31:51,274 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2019-12-07 14:31:51,275 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2019-12-07 14:31:51,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2019-12-07 14:31:51,275 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14
[2019-12-07 14:31:51,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:51,275 INFO  L462      AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2019-12-07 14:31:51,275 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-12-07 14:31:51,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2019-12-07 14:31:51,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2019-12-07 14:31:51,276 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:51,276 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1]
[2019-12-07 14:31:51,476 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:51,476 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:51,476 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:51,477 INFO  L82        PathProgramCache]: Analyzing trace with hash 2107466330, now seen corresponding path program 2 times
[2019-12-07 14:31:51,477 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:51,477 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910042481]
[2019-12-07 14:31:51,477 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:51,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-12-07 14:31:51,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-12-07 14:31:51,575 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910042481]
[2019-12-07 14:31:51,575 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087560710]
[2019-12-07 14:31:51,575 INFO  L92    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:51,591 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-12-07 14:31:51,591 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-12-07 14:31:51,592 WARN  L262         TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 23 conjunts are in the unsatisfiable core
[2019-12-07 14:31:51,593 INFO  L287         TraceCheckSpWp]: Computing forward predicates...
[2019-12-07 14:31:51,683 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-12-07 14:31:51,695 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-12-07 14:31:51,695 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-12-07 14:31:51,695 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16
[2019-12-07 14:31:51,695 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890861079]
[2019-12-07 14:31:51,696 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 17 states
[2019-12-07 14:31:51,696 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-12-07 14:31:51,696 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2019-12-07 14:31:51,696 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272
[2019-12-07 14:31:51,696 INFO  L87              Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 17 states.
[2019-12-07 14:31:51,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-12-07 14:31:51,945 INFO  L93              Difference]: Finished difference Result 27 states and 30 transitions.
[2019-12-07 14:31:51,946 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2019-12-07 14:31:51,946 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 14
[2019-12-07 14:31:51,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-12-07 14:31:51,946 INFO  L225             Difference]: With dead ends: 27
[2019-12-07 14:31:51,946 INFO  L226             Difference]: Without dead ends: 21
[2019-12-07 14:31:51,947 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756
[2019-12-07 14:31:51,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2019-12-07 14:31:51,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19.
[2019-12-07 14:31:51,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2019-12-07 14:31:51,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2019-12-07 14:31:51,950 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14
[2019-12-07 14:31:51,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-12-07 14:31:51,950 INFO  L462      AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2019-12-07 14:31:51,950 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2019-12-07 14:31:51,950 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2019-12-07 14:31:51,951 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2019-12-07 14:31:51,951 INFO  L402         BasicCegarLoop]: Found error trace
[2019-12-07 14:31:51,951 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1]
[2019-12-07 14:31:52,151 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-12-07 14:31:52,152 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-12-07 14:31:52,153 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-12-07 14:31:52,153 INFO  L82        PathProgramCache]: Analyzing trace with hash 1236497329, now seen corresponding path program 3 times
[2019-12-07 14:31:52,154 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-12-07 14:31:52,154 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581797613]
[2019-12-07 14:31:52,154 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-12-07 14:31:52,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-12-07 14:31:52,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-12-07 14:31:52,210 INFO  L174   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2019-12-07 14:31:52,210 INFO  L475         BasicCegarLoop]: Counterexample might be feasible
[2019-12-07 14:31:52,223 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:31:52 BoogieIcfgContainer
[2019-12-07 14:31:52,223 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-12-07 14:31:52,223 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2019-12-07 14:31:52,223 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2019-12-07 14:31:52,223 INFO  L275        PluginConnector]: Witness Printer initialized
[2019-12-07 14:31:52,223 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:31:49" (3/4) ...
[2019-12-07 14:31:52,225 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2019-12-07 14:31:52,254 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6e6a3574-ad0d-4175-9de4-ac0c5c7343a6/bin/uautomizer/witness.graphml
[2019-12-07 14:31:52,254 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2019-12-07 14:31:52,255 INFO  L168              Benchmark]: Toolchain (without parser) took 2645.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.9 MB in the beginning and 849.2 MB in the end (delta: 91.7 MB). Peak memory consumption was 187.1 MB. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,256 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,256 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 175.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -151.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,256 INFO  L168              Benchmark]: Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,256 INFO  L168              Benchmark]: Boogie Preprocessor took 14.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,257 INFO  L168              Benchmark]: RCFGBuilder took 145.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,257 INFO  L168              Benchmark]: TraceAbstraction took 2250.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 854.5 MB in the end (delta: 218.2 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,257 INFO  L168              Benchmark]: Witness Printer took 31.02 ms. Allocated memory is still 1.1 GB. Free memory was 854.5 MB in the beginning and 849.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB.
[2019-12-07 14:31:52,259 INFO  L335   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 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 175.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -151.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB.
 * Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 14.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * RCFGBuilder took 145.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB.
 * TraceAbstraction took 2250.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 854.5 MB in the end (delta: 218.2 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB.
 * Witness Printer took 31.02 ms. Allocated memory is still 1.1 GB. Free memory was 854.5 MB in the beginning and 849.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L12]              int i, n=__VERIFIER_nondet_uint(), sn=0;
[L12]              int i, n=__VERIFIER_nondet_uint(), sn=0;
[L13]              i=1
[L13]  COND TRUE   i<=n
[L14]              sn = sn + (2)
[L15]  COND FALSE  !(i==4)
[L13]              i++
[L13]  COND TRUE   i<=n
[L14]              sn = sn + (2)
[L15]  COND FALSE  !(i==4)
[L13]              i++
[L13]  COND TRUE   i<=n
[L14]              sn = sn + (2)
[L15]  COND FALSE  !(i==4)
[L13]              i++
[L13]  COND TRUE   i<=n
[L14]              sn = sn + (2)
[L15]  COND TRUE   i==4
[L15]              sn=-10
[L13]              i++
[L13]  COND FALSE  !(i<=n)
[L4]   COND TRUE   !(cond)
[L5]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 32 SDslu, 63 SDs, 0 SdLazy, 276 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 5659 SizeOfPredicates, 12 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 22/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...