./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 635dfa2a
Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.1.23-635dfa2
[2018-12-02 06:24:49,779 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-12-02 06:24:49,780 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-12-02 06:24:49,786 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-12-02 06:24:49,786 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-12-02 06:24:49,786 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-12-02 06:24:49,787 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-12-02 06:24:49,787 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-12-02 06:24:49,788 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-12-02 06:24:49,789 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-12-02 06:24:49,789 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-12-02 06:24:49,789 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-12-02 06:24:49,790 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-12-02 06:24:49,790 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-12-02 06:24:49,790 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-12-02 06:24:49,791 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-12-02 06:24:49,791 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-12-02 06:24:49,792 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-12-02 06:24:49,793 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-12-02 06:24:49,794 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-12-02 06:24:49,794 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-12-02 06:24:49,795 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-12-02 06:24:49,796 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-12-02 06:24:49,796 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-12-02 06:24:49,796 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-12-02 06:24:49,796 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-12-02 06:24:49,797 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-12-02 06:24:49,797 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-12-02 06:24:49,797 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-12-02 06:24:49,798 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-12-02 06:24:49,798 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-12-02 06:24:49,798 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-12-02 06:24:49,798 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-12-02 06:24:49,799 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-12-02 06:24:49,799 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-12-02 06:24:49,799 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-12-02 06:24:49,799 INFO  L98         SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2018-12-02 06:24:49,806 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-12-02 06:24:49,807 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-12-02 06:24:49,807 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-12-02 06:24:49,807 INFO  L133        SettingsManager]:  * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS
[2018-12-02 06:24:49,807 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-12-02 06:24:49,808 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-12-02 06:24:49,808 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Use constant arrays=true
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-12-02 06:24:49,809 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-12-02 06:24:49,809 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-12-02 06:24:49,809 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-12-02 06:24:49,810 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-12-02 06:24:49,810 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-12-02 06:24:49,810 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-12-02 06:24:49,810 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-12-02 06:24:49,810 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_f2902870-5549-4e5a-9097-fc64b2293baf/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 -> 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3
[2018-12-02 06:24:49,828 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-12-02 06:24:49,837 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-12-02 06:24:49,839 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-12-02 06:24:49,840 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-12-02 06:24:49,840 INFO  L276        PluginConnector]: CDTParser initialized
[2018-12-02 06:24:49,841 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c
[2018-12-02 06:24:49,878 INFO  L221              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d/FLAG3561bc313
[2018-12-02 06:24:50,169 INFO  L307              CDTParser]: Found 1 translation units.
[2018-12-02 06:24:50,170 INFO  L161              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c
[2018-12-02 06:24:50,174 INFO  L355              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d/FLAG3561bc313
[2018-12-02 06:24:50,603 INFO  L363              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d
[2018-12-02 06:24:50,605 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-12-02 06:24:50,606 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2018-12-02 06:24:50,607 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-12-02 06:24:50,607 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-12-02 06:24:50,609 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-12-02 06:24:50,609 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,611 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355d8d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50, skipping insertion in model container
[2018-12-02 06:24:50,611 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,615 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-12-02 06:24:50,625 INFO  L176         MainTranslator]: Built tables and reachable declarations
[2018-12-02 06:24:50,720 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-02 06:24:50,723 INFO  L191         MainTranslator]: Completed pre-run
[2018-12-02 06:24:50,733 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-02 06:24:50,741 INFO  L195         MainTranslator]: Completed translation
[2018-12-02 06:24:50,741 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50 WrapperNode
[2018-12-02 06:24:50,741 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-12-02 06:24:50,742 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-12-02 06:24:50,742 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-12-02 06:24:50,742 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-12-02 06:24:50,747 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,750 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,754 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-12-02 06:24:50,754 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-12-02 06:24:50,754 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-12-02 06:24:50,754 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-12-02 06:24:50,759 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,760 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,760 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,760 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,762 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,763 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,764 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
[2018-12-02 06:24:50,765 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-12-02 06:24:50,765 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-12-02 06:24:50,765 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-12-02 06:24:50,765 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-12-02 06:24:50,766 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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
[2018-12-02 06:24:50,830 INFO  L130     BoogieDeclarations]: Found specification of procedure fibonacci
[2018-12-02 06:24:50,830 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibonacci
[2018-12-02 06:24:50,830 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-12-02 06:24:50,830 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-12-02 06:24:50,830 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-12-02 06:24:50,830 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-12-02 06:24:50,830 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-12-02 06:24:50,830 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-12-02 06:24:50,908 INFO  L275             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-12-02 06:24:50,908 INFO  L280             CfgBuilder]: Removed 0 assue(true) statements.
[2018-12-02 06:24:50,908 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50 BoogieIcfgContainer
[2018-12-02 06:24:50,908 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-12-02 06:24:50,909 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-12-02 06:24:50,909 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-12-02 06:24:50,911 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-12-02 06:24:50,911 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:24:50" (1/3) ...
[2018-12-02 06:24:50,911 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb2daa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:24:50, skipping insertion in model container
[2018-12-02 06:24:50,911 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (2/3) ...
[2018-12-02 06:24:50,911 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb2daa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:24:50, skipping insertion in model container
[2018-12-02 06:24:50,912 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50" (3/3) ...
[2018-12-02 06:24:50,913 INFO  L112   eAbstractionObserver]: Analyzing ICFG Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c
[2018-12-02 06:24:50,918 INFO  L156   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-12-02 06:24:50,922 INFO  L168   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-12-02 06:24:50,931 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-12-02 06:24:50,948 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-12-02 06:24:50,948 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-12-02 06:24:50,948 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-12-02 06:24:50,948 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-12-02 06:24:50,948 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-12-02 06:24:50,948 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-12-02 06:24:50,948 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-12-02 06:24:50,948 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-12-02 06:24:50,949 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-12-02 06:24:50,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states.
[2018-12-02 06:24:50,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2018-12-02 06:24:50,962 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:50,962 INFO  L402         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:50,963 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:50,966 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:50,967 INFO  L82        PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times
[2018-12-02 06:24:50,968 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:50,968 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:50,996 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:50,997 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:50,997 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-02 06:24:51,061 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-12-02 06:24:51,062 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-12-02 06:24:51,064 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-12-02 06:24:51,072 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-12-02 06:24:51,072 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-12-02 06:24:51,074 INFO  L87              Difference]: Start difference. First operand 24 states. Second operand 5 states.
[2018-12-02 06:24:51,126 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:51,126 INFO  L93              Difference]: Finished difference Result 36 states and 43 transitions.
[2018-12-02 06:24:51,126 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-12-02 06:24:51,127 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2018-12-02 06:24:51,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:51,133 INFO  L225             Difference]: With dead ends: 36
[2018-12-02 06:24:51,133 INFO  L226             Difference]: Without dead ends: 22
[2018-12-02 06:24:51,135 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-12-02 06:24:51,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2018-12-02 06:24:51,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2018-12-02 06:24:51,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-12-02 06:24:51,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2018-12-02 06:24:51,158 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14
[2018-12-02 06:24:51,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:51,159 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2018-12-02 06:24:51,159 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-12-02 06:24:51,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2018-12-02 06:24:51,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-12-02 06:24:51,160 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:51,160 INFO  L402         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:51,160 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:51,160 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:51,160 INFO  L82        PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times
[2018-12-02 06:24:51,160 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:51,160 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:51,161 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,161 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,161 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-02 06:24:51,189 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-12-02 06:24:51,189 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-12-02 06:24:51,190 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-12-02 06:24:51,190 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-12-02 06:24:51,190 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-12-02 06:24:51,191 INFO  L87              Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states.
[2018-12-02 06:24:51,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:51,223 INFO  L93              Difference]: Finished difference Result 28 states and 33 transitions.
[2018-12-02 06:24:51,223 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-12-02 06:24:51,223 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 15
[2018-12-02 06:24:51,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:51,224 INFO  L225             Difference]: With dead ends: 28
[2018-12-02 06:24:51,224 INFO  L226             Difference]: Without dead ends: 24
[2018-12-02 06:24:51,224 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-12-02 06:24:51,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-12-02 06:24:51,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22.
[2018-12-02 06:24:51,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-12-02 06:24:51,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2018-12-02 06:24:51,228 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15
[2018-12-02 06:24:51,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:51,228 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2018-12-02 06:24:51,228 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-12-02 06:24:51,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2018-12-02 06:24:51,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2018-12-02 06:24:51,229 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:51,229 INFO  L402         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:51,229 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:51,229 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:51,229 INFO  L82        PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times
[2018-12-02 06:24:51,229 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:51,229 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:51,230 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,230 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,230 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2018-12-02 06:24:51,271 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:51,271 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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
[2018-12-02 06:24:51,278 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,293 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:51,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2018-12-02 06:24:51,351 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:51,352 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2018-12-02 06:24:51,352 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-12-02 06:24:51,352 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-12-02 06:24:51,352 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2018-12-02 06:24:51,352 INFO  L87              Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states.
[2018-12-02 06:24:51,422 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:51,422 INFO  L93              Difference]: Finished difference Result 39 states and 50 transitions.
[2018-12-02 06:24:51,422 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-12-02 06:24:51,422 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 27
[2018-12-02 06:24:51,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:51,423 INFO  L225             Difference]: With dead ends: 39
[2018-12-02 06:24:51,423 INFO  L226             Difference]: Without dead ends: 24
[2018-12-02 06:24:51,424 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2018-12-02 06:24:51,424 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-12-02 06:24:51,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2018-12-02 06:24:51,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-12-02 06:24:51,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions.
[2018-12-02 06:24:51,427 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27
[2018-12-02 06:24:51,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:51,427 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 28 transitions.
[2018-12-02 06:24:51,427 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-12-02 06:24:51,427 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions.
[2018-12-02 06:24:51,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2018-12-02 06:24:51,428 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:51,428 INFO  L402         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:51,428 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:51,429 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:51,429 INFO  L82        PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times
[2018-12-02 06:24:51,429 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:51,429 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:51,429 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,430 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,430 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-12-02 06:24:51,464 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:51,464 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:51,470 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,478 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:51,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-12-02 06:24:51,498 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:51,498 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-12-02 06:24:51,499 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-12-02 06:24:51,499 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-12-02 06:24:51,499 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2018-12-02 06:24:51,499 INFO  L87              Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states.
[2018-12-02 06:24:51,535 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:51,535 INFO  L93              Difference]: Finished difference Result 33 states and 42 transitions.
[2018-12-02 06:24:51,535 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-12-02 06:24:51,536 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 28
[2018-12-02 06:24:51,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:51,536 INFO  L225             Difference]: With dead ends: 33
[2018-12-02 06:24:51,536 INFO  L226             Difference]: Without dead ends: 29
[2018-12-02 06:24:51,537 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2018-12-02 06:24:51,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-12-02 06:24:51,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2018-12-02 06:24:51,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2018-12-02 06:24:51,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions.
[2018-12-02 06:24:51,541 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 28
[2018-12-02 06:24:51,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:51,541 INFO  L480      AbstractCegarLoop]: Abstraction has 29 states and 38 transitions.
[2018-12-02 06:24:51,541 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-12-02 06:24:51,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions.
[2018-12-02 06:24:51,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2018-12-02 06:24:51,542 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:51,542 INFO  L402         BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:51,542 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:51,542 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:51,542 INFO  L82        PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 2 times
[2018-12-02 06:24:51,542 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:51,542 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:51,543 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,543 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:51,543 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2018-12-02 06:24:51,571 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:51,571 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:51,579 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-12-02 06:24:51,589 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-12-02 06:24:51,590 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,592 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:51,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2018-12-02 06:24:51,637 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:51,638 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9
[2018-12-02 06:24:51,638 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-12-02 06:24:51,638 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-12-02 06:24:51,638 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2018-12-02 06:24:51,638 INFO  L87              Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 9 states.
[2018-12-02 06:24:51,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:51,713 INFO  L93              Difference]: Finished difference Result 43 states and 63 transitions.
[2018-12-02 06:24:51,713 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-12-02 06:24:51,713 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 41
[2018-12-02 06:24:51,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:51,714 INFO  L225             Difference]: With dead ends: 43
[2018-12-02 06:24:51,714 INFO  L226             Difference]: Without dead ends: 37
[2018-12-02 06:24:51,714 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2018-12-02 06:24:51,715 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-12-02 06:24:51,718 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34.
[2018-12-02 06:24:51,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-12-02 06:24:51,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions.
[2018-12-02 06:24:51,719 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 41
[2018-12-02 06:24:51,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:51,720 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 50 transitions.
[2018-12-02 06:24:51,720 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-12-02 06:24:51,720 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions.
[2018-12-02 06:24:51,721 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2018-12-02 06:24:51,721 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:51,721 INFO  L402         BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:51,721 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:51,722 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:51,722 INFO  L82        PathProgramCache]: Analyzing trace with hash -168777920, now seen corresponding path program 3 times
[2018-12-02 06:24:51,722 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:51,722 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:51,722 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,722 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,722 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:51,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 427 backedges. 176 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked.
[2018-12-02 06:24:51,828 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:51,828 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:51,835 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-12-02 06:24:51,854 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-12-02 06:24:51,855 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:51,858 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:51,882 INFO  L134       CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2018-12-02 06:24:51,896 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:51,896 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12
[2018-12-02 06:24:51,897 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-12-02 06:24:51,897 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-12-02 06:24:51,897 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2018-12-02 06:24:51,897 INFO  L87              Difference]: Start difference. First operand 34 states and 50 transitions. Second operand 12 states.
[2018-12-02 06:24:52,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:52,047 INFO  L93              Difference]: Finished difference Result 77 states and 144 transitions.
[2018-12-02 06:24:52,048 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-12-02 06:24:52,048 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 97
[2018-12-02 06:24:52,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:52,049 INFO  L225             Difference]: With dead ends: 77
[2018-12-02 06:24:52,049 INFO  L226             Difference]: Without dead ends: 50
[2018-12-02 06:24:52,050 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342
[2018-12-02 06:24:52,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2018-12-02 06:24:52,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44.
[2018-12-02 06:24:52,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2018-12-02 06:24:52,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 64 transitions.
[2018-12-02 06:24:52,056 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 64 transitions. Word has length 97
[2018-12-02 06:24:52,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:52,056 INFO  L480      AbstractCegarLoop]: Abstraction has 44 states and 64 transitions.
[2018-12-02 06:24:52,056 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-12-02 06:24:52,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 64 transitions.
[2018-12-02 06:24:52,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2018-12-02 06:24:52,058 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:52,058 INFO  L402         BasicCegarLoop]: trace histogram [13, 13, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:52,058 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:52,058 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:52,058 INFO  L82        PathProgramCache]: Analyzing trace with hash 587556238, now seen corresponding path program 4 times
[2018-12-02 06:24:52,059 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:52,059 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:52,059 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,059 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,059 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:52,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 438 backedges. 113 proven. 82 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked.
[2018-12-02 06:24:52,124 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:52,124 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:52,131 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-12-02 06:24:52,147 INFO  L249   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-12-02 06:24:52,148 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:52,151 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:52,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 438 backedges. 84 proven. 176 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked.
[2018-12-02 06:24:52,214 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:52,214 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 14
[2018-12-02 06:24:52,214 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2018-12-02 06:24:52,214 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2018-12-02 06:24:52,215 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2018-12-02 06:24:52,215 INFO  L87              Difference]: Start difference. First operand 44 states and 64 transitions. Second operand 14 states.
[2018-12-02 06:24:52,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:52,541 INFO  L93              Difference]: Finished difference Result 108 states and 183 transitions.
[2018-12-02 06:24:52,541 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2018-12-02 06:24:52,542 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 98
[2018-12-02 06:24:52,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:52,543 INFO  L225             Difference]: With dead ends: 108
[2018-12-02 06:24:52,543 INFO  L226             Difference]: Without dead ends: 69
[2018-12-02 06:24:52,544 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=714, Unknown=0, NotChecked=0, Total=992
[2018-12-02 06:24:52,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2018-12-02 06:24:52,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2018-12-02 06:24:52,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2018-12-02 06:24:52,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions.
[2018-12-02 06:24:52,550 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 98
[2018-12-02 06:24:52,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:52,550 INFO  L480      AbstractCegarLoop]: Abstraction has 69 states and 90 transitions.
[2018-12-02 06:24:52,550 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2018-12-02 06:24:52,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions.
[2018-12-02 06:24:52,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2018-12-02 06:24:52,552 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:52,552 INFO  L402         BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:52,552 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:52,552 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:52,552 INFO  L82        PathProgramCache]: Analyzing trace with hash -516480259, now seen corresponding path program 5 times
[2018-12-02 06:24:52,553 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:52,553 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:52,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,553 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:52,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:52,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 2580 backedges. 137 proven. 567 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked.
[2018-12-02 06:24:52,631 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:52,631 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:52,638 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-12-02 06:24:52,681 INFO  L249   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s)
[2018-12-02 06:24:52,681 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:52,685 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:52,791 INFO  L134       CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 586 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked.
[2018-12-02 06:24:52,806 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:52,806 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 17
[2018-12-02 06:24:52,807 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2018-12-02 06:24:52,807 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2018-12-02 06:24:52,807 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272
[2018-12-02 06:24:52,807 INFO  L87              Difference]: Start difference. First operand 69 states and 90 transitions. Second operand 17 states.
[2018-12-02 06:24:53,144 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:53,145 INFO  L93              Difference]: Finished difference Result 153 states and 239 transitions.
[2018-12-02 06:24:53,145 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2018-12-02 06:24:53,145 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 219
[2018-12-02 06:24:53,145 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:53,146 INFO  L225             Difference]: With dead ends: 153
[2018-12-02 06:24:53,146 INFO  L226             Difference]: Without dead ends: 93
[2018-12-02 06:24:53,147 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406
[2018-12-02 06:24:53,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2018-12-02 06:24:53,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82.
[2018-12-02 06:24:53,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2018-12-02 06:24:53,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions.
[2018-12-02 06:24:53,153 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 219
[2018-12-02 06:24:53,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:53,154 INFO  L480      AbstractCegarLoop]: Abstraction has 82 states and 108 transitions.
[2018-12-02 06:24:53,154 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2018-12-02 06:24:53,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions.
[2018-12-02 06:24:53,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2018-12-02 06:24:53,157 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:53,157 INFO  L402         BasicCegarLoop]: trace histogram [57, 57, 46, 28, 28, 28, 28, 28, 28, 28, 18, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:53,157 INFO  L423      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:53,157 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:53,157 INFO  L82        PathProgramCache]: Analyzing trace with hash 165459912, now seen corresponding path program 6 times
[2018-12-02 06:24:53,158 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:53,158 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:53,158 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,158 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,158 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:53,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 8931 backedges. 263 proven. 1415 refuted. 0 times theorem prover too weak. 7253 trivial. 0 not checked.
[2018-12-02 06:24:53,298 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:53,298 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:53,304 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-12-02 06:24:53,342 INFO  L249   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s)
[2018-12-02 06:24:53,343 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:53,349 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:53,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 8931 backedges. 371 proven. 1307 refuted. 0 times theorem prover too weak. 7253 trivial. 0 not checked.
[2018-12-02 06:24:53,419 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:53,419 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2018-12-02 06:24:53,419 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-12-02 06:24:53,420 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-12-02 06:24:53,420 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2018-12-02 06:24:53,420 INFO  L87              Difference]: Start difference. First operand 82 states and 108 transitions. Second operand 11 states.
[2018-12-02 06:24:53,522 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:53,522 INFO  L93              Difference]: Finished difference Result 91 states and 125 transitions.
[2018-12-02 06:24:53,522 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-12-02 06:24:53,522 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 396
[2018-12-02 06:24:53,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:53,523 INFO  L225             Difference]: With dead ends: 91
[2018-12-02 06:24:53,523 INFO  L226             Difference]: Without dead ends: 87
[2018-12-02 06:24:53,523 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306
[2018-12-02 06:24:53,524 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2018-12-02 06:24:53,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87.
[2018-12-02 06:24:53,530 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2018-12-02 06:24:53,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions.
[2018-12-02 06:24:53,531 INFO  L78                 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 396
[2018-12-02 06:24:53,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:53,531 INFO  L480      AbstractCegarLoop]: Abstraction has 87 states and 121 transitions.
[2018-12-02 06:24:53,531 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-12-02 06:24:53,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions.
[2018-12-02 06:24:53,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 533
[2018-12-02 06:24:53,540 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:53,541 INFO  L402         BasicCegarLoop]: trace histogram [77, 77, 62, 38, 38, 38, 38, 38, 38, 38, 24, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:53,541 INFO  L423      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:53,541 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:53,541 INFO  L82        PathProgramCache]: Analyzing trace with hash 826091136, now seen corresponding path program 7 times
[2018-12-02 06:24:53,541 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:53,541 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:53,542 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,542 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,542 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:53,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:53,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 16407 backedges. 425 proven. 2285 refuted. 0 times theorem prover too weak. 13697 trivial. 0 not checked.
[2018-12-02 06:24:53,721 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:53,721 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:53,730 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:53,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:53,828 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:53,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 16407 backedges. 386 proven. 2689 refuted. 0 times theorem prover too weak. 13332 trivial. 0 not checked.
[2018-12-02 06:24:53,979 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:53,979 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12
[2018-12-02 06:24:53,979 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-12-02 06:24:53,980 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-12-02 06:24:53,980 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132
[2018-12-02 06:24:53,980 INFO  L87              Difference]: Start difference. First operand 87 states and 121 transitions. Second operand 12 states.
[2018-12-02 06:24:54,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:54,120 INFO  L93              Difference]: Finished difference Result 96 states and 140 transitions.
[2018-12-02 06:24:54,120 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2018-12-02 06:24:54,120 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 532
[2018-12-02 06:24:54,121 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:54,121 INFO  L225             Difference]: With dead ends: 96
[2018-12-02 06:24:54,121 INFO  L226             Difference]: Without dead ends: 92
[2018-12-02 06:24:54,122 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380
[2018-12-02 06:24:54,122 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2018-12-02 06:24:54,127 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2018-12-02 06:24:54,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2018-12-02 06:24:54,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions.
[2018-12-02 06:24:54,128 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 532
[2018-12-02 06:24:54,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:54,128 INFO  L480      AbstractCegarLoop]: Abstraction has 92 states and 136 transitions.
[2018-12-02 06:24:54,128 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-12-02 06:24:54,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions.
[2018-12-02 06:24:54,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1201
[2018-12-02 06:24:54,134 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:54,134 INFO  L402         BasicCegarLoop]: trace histogram [175, 175, 142, 87, 87, 87, 87, 87, 87, 87, 55, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:54,134 INFO  L423      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:54,134 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:54,134 INFO  L82        PathProgramCache]: Analyzing trace with hash -497666383, now seen corresponding path program 8 times
[2018-12-02 06:24:54,134 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:54,134 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:54,135 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:54,135 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 06:24:54,135 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:54,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:54,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 85875 backedges. 2520 proven. 6657 refuted. 0 times theorem prover too weak. 76698 trivial. 0 not checked.
[2018-12-02 06:24:54,679 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:54,679 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:54,685 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-12-02 06:24:54,869 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-12-02 06:24:54,869 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:54,885 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:55,387 INFO  L134       CoverageAnalysis]: Checked inductivity of 85875 backedges. 39097 proven. 2092 refuted. 0 times theorem prover too weak. 44686 trivial. 0 not checked.
[2018-12-02 06:24:55,403 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:55,403 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 21
[2018-12-02 06:24:55,405 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 21 states
[2018-12-02 06:24:55,405 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2018-12-02 06:24:55,405 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420
[2018-12-02 06:24:55,405 INFO  L87              Difference]: Start difference. First operand 92 states and 136 transitions. Second operand 21 states.
[2018-12-02 06:24:55,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:55,793 INFO  L93              Difference]: Finished difference Result 198 states and 359 transitions.
[2018-12-02 06:24:55,793 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2018-12-02 06:24:55,793 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 1200
[2018-12-02 06:24:55,793 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:55,794 INFO  L225             Difference]: With dead ends: 198
[2018-12-02 06:24:55,794 INFO  L226             Difference]: Without dead ends: 115
[2018-12-02 06:24:55,795 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1198 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070
[2018-12-02 06:24:55,796 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2018-12-02 06:24:55,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104.
[2018-12-02 06:24:55,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 104 states.
[2018-12-02 06:24:55,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions.
[2018-12-02 06:24:55,802 INFO  L78                 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 1200
[2018-12-02 06:24:55,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:55,803 INFO  L480      AbstractCegarLoop]: Abstraction has 104 states and 150 transitions.
[2018-12-02 06:24:55,803 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2018-12-02 06:24:55,803 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions.
[2018-12-02 06:24:55,807 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1173
[2018-12-02 06:24:55,808 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:55,808 INFO  L402         BasicCegarLoop]: trace histogram [171, 171, 138, 85, 85, 85, 85, 85, 85, 85, 53, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:55,808 INFO  L423      AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:55,808 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:55,808 INFO  L82        PathProgramCache]: Analyzing trace with hash -1984589965, now seen corresponding path program 9 times
[2018-12-02 06:24:55,808 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:55,808 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:55,809 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:55,809 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:55,809 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:55,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:56,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 81873 backedges. 4013 proven. 5837 refuted. 0 times theorem prover too weak. 72023 trivial. 0 not checked.
[2018-12-02 06:24:56,331 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:56,331 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:56,338 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-12-02 06:24:56,519 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s)
[2018-12-02 06:24:56,520 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:56,536 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:56,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 81873 backedges. 29640 proven. 296 refuted. 0 times theorem prover too weak. 51937 trivial. 0 not checked.
[2018-12-02 06:24:56,952 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:56,952 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18
[2018-12-02 06:24:56,953 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 18 states
[2018-12-02 06:24:56,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2018-12-02 06:24:56,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306
[2018-12-02 06:24:56,953 INFO  L87              Difference]: Start difference. First operand 104 states and 150 transitions. Second operand 18 states.
[2018-12-02 06:24:57,240 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:57,240 INFO  L93              Difference]: Finished difference Result 210 states and 336 transitions.
[2018-12-02 06:24:57,240 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-12-02 06:24:57,241 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 1172
[2018-12-02 06:24:57,241 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:57,242 INFO  L225             Difference]: With dead ends: 210
[2018-12-02 06:24:57,242 INFO  L226             Difference]: Without dead ends: 115
[2018-12-02 06:24:57,243 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056
[2018-12-02 06:24:57,243 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2018-12-02 06:24:57,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97.
[2018-12-02 06:24:57,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 97 states.
[2018-12-02 06:24:57,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 140 transitions.
[2018-12-02 06:24:57,249 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 140 transitions. Word has length 1172
[2018-12-02 06:24:57,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:57,249 INFO  L480      AbstractCegarLoop]: Abstraction has 97 states and 140 transitions.
[2018-12-02 06:24:57,249 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2018-12-02 06:24:57,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 140 transitions.
[2018-12-02 06:24:57,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 751
[2018-12-02 06:24:57,252 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 06:24:57,252 INFO  L402         BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 06:24:57,253 INFO  L423      AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 06:24:57,253 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 06:24:57,253 INFO  L82        PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 10 times
[2018-12-02 06:24:57,253 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 06:24:57,253 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 06:24:57,254 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:57,254 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-02 06:24:57,254 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 06:24:57,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 06:24:57,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked.
[2018-12-02 06:24:57,711 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-02 06:24:57,711 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-02 06:24:57,717 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-12-02 06:24:57,821 INFO  L249   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-12-02 06:24:57,821 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-02 06:24:57,833 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-02 06:24:58,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked.
[2018-12-02 06:24:58,294 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-02 06:24:58,294 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36
[2018-12-02 06:24:58,295 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 36 states
[2018-12-02 06:24:58,295 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2018-12-02 06:24:58,295 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260
[2018-12-02 06:24:58,295 INFO  L87              Difference]: Start difference. First operand 97 states and 140 transitions. Second operand 36 states.
[2018-12-02 06:24:58,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 06:24:58,432 INFO  L93              Difference]: Finished difference Result 108 states and 168 transitions.
[2018-12-02 06:24:58,432 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2018-12-02 06:24:58,432 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states. Word has length 750
[2018-12-02 06:24:58,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 06:24:58,433 INFO  L225             Difference]: With dead ends: 108
[2018-12-02 06:24:58,433 INFO  L226             Difference]: Without dead ends: 0
[2018-12-02 06:24:58,434 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560
[2018-12-02 06:24:58,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2018-12-02 06:24:58,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2018-12-02 06:24:58,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2018-12-02 06:24:58,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2018-12-02 06:24:58,435 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750
[2018-12-02 06:24:58,435 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 06:24:58,435 INFO  L480      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2018-12-02 06:24:58,435 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 36 states.
[2018-12-02 06:24:58,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2018-12-02 06:24:58,435 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2018-12-02 06:24:58,439 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2018-12-02 06:24:58,454 WARN  L250   erpolLogProxyWrapper]: Already inconsistent.
[2018-12-02 06:24:58,459 WARN  L250   erpolLogProxyWrapper]: Already inconsistent.
[2018-12-02 06:24:58,755 WARN  L180               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44
[2018-12-02 06:24:58,757 INFO  L448   ceAbstractionStarter]: For program point  fibonacciFINAL(lines 14 22)  no Hoare annotation was computed.
[2018-12-02 06:24:58,757 INFO  L451   ceAbstractionStarter]: At program point  fibonacciENTRY(lines 14 22)  the Hoare annotation is:  true
[2018-12-02 06:24:58,757 INFO  L444   ceAbstractionStarter]: At program point  L20(line 20)  the Hoare annotation is:  (and (<= |fibonacci_#in~n| fibonacci_~n) (< 1 |fibonacci_#in~n|) (<= fibonacci_~n |fibonacci_#in~n|))
[2018-12-02 06:24:58,757 INFO  L448   ceAbstractionStarter]: For program point  L20-1(line 20)  no Hoare annotation was computed.
[2018-12-02 06:24:58,757 INFO  L444   ceAbstractionStarter]: At program point  L20-2(line 20)  the Hoare annotation is:  (let ((.cse1 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse3 (<= 7 fibonacci_~n)) (.cse4 (<= 6 fibonacci_~n)) (.cse2 (<= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 3) .cse0 .cse1 (<= 3 |fibonacci_#in~n|) .cse2) (and (<= 21 |fibonacci_#t~ret0|) .cse0 .cse3 .cse2) (and (<= 13 |fibonacci_#t~ret0|) .cse0 (<= |fibonacci_#in~n| 8) .cse4 .cse2) (and .cse1 (<= |fibonacci_#in~n| 2) (<= 2 fibonacci_~n) .cse2) (and (<= 5 |fibonacci_#in~n|) .cse0 (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5) .cse2) (and (<= 4 |fibonacci_#in~n|) .cse0 (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (and (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7) .cse3 .cse2) (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) .cse4 .cse2)))
[2018-12-02 06:24:58,757 INFO  L448   ceAbstractionStarter]: For program point  fibonacciEXIT(lines 14 22)  no Hoare annotation was computed.
[2018-12-02 06:24:58,757 INFO  L448   ceAbstractionStarter]: For program point  L17(lines 17 21)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L20-3(line 20)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L15(lines 15 21)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L451   ceAbstractionStarter]: At program point  ULTIMATE.initFINAL(line -1)  the Hoare annotation is:  true
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L451   ceAbstractionStarter]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2018-12-02 06:24:58,758 INFO  L451   ceAbstractionStarter]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L31(lines 31 35)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L451   ceAbstractionStarter]: At program point  L30(line 30)  the Hoare annotation is:  true
[2018-12-02 06:24:58,758 INFO  L451   ceAbstractionStarter]: At program point  mainENTRY(lines 25 36)  the Hoare annotation is:  true
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L30-1(line 30)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L27(lines 27 29)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  mainEXIT(lines 25 36)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  mainFINAL(lines 25 36)  no Hoare annotation was computed.
[2018-12-02 06:24:58,758 INFO  L448   ceAbstractionStarter]: For program point  L34(line 34)  no Hoare annotation was computed.
[2018-12-02 06:24:58,760 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:24:58 BoogieIcfgContainer
[2018-12-02 06:24:58,760 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-12-02 06:24:58,761 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2018-12-02 06:24:58,761 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2018-12-02 06:24:58,761 INFO  L276        PluginConnector]: Witness Printer initialized
[2018-12-02 06:24:58,761 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50" (3/4) ...
[2018-12-02 06:24:58,764 INFO  L144         WitnessPrinter]: Generating witness for correct program
[2018-12-02 06:24:58,768 INFO  L354     RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci
[2018-12-02 06:24:58,768 INFO  L354     RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init
[2018-12-02 06:24:58,768 INFO  L354     RCFGBacktranslator]: Ignoring RootEdge to procedure main
[2018-12-02 06:24:58,771 INFO  L905   BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges
[2018-12-02 06:24:58,771 INFO  L905   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2018-12-02 06:24:58,771 INFO  L905   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2018-12-02 06:24:58,800 INFO  L145         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/witness.graphml
[2018-12-02 06:24:58,800 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2018-12-02 06:24:58,801 INFO  L168              Benchmark]: Toolchain (without parser) took 8195.29 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.3 GB). Free memory was 952.2 MB in the beginning and 1.5 GB in the end (delta: -515.1 MB). Peak memory consumption was 802.5 MB. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,801 INFO  L168              Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,802 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,802 INFO  L168              Benchmark]: Boogie Procedure Inliner took 12.05 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,802 INFO  L168              Benchmark]: Boogie Preprocessor took 10.86 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,802 INFO  L168              Benchmark]: RCFGBuilder took 143.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,803 INFO  L168              Benchmark]: TraceAbstraction took 7851.59 ms. Allocated memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -389.7 MB). Peak memory consumption was 835.5 MB. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,803 INFO  L168              Benchmark]: Witness Printer took 39.74 ms. Allocated memory is still 2.3 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 06:24:58,805 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB.
 * Boogie Procedure Inliner took 12.05 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 10.86 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * RCFGBuilder took 143.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB.
 * TraceAbstraction took 7851.59 ms. Allocated memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -389.7 MB). Peak memory consumption was 835.5 MB. Max. memory is 11.5 GB.
 * Witness Printer took 39.74 ms. Allocated memory is still 2.3 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 13 OverallIterations, 175 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 329 SDtfs, 572 SDslu, 1497 SDs, 0 SdLazy, 2136 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5029 GetRequests, 4762 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=11, 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, 13 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 212 PreInvPairs, 298 NumberOfFragments, 131 HoareAnnotationTreeSize, 212 FomulaSimplifications, 1498 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2427 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 9149 NumberOfCodeBlocks, 8193 NumberOfCodeBlocksAsserted, 143 NumberOfCheckSat, 9125 ConstructedInterpolants, 0 QuantifiedInterpolants, 10071505 SizeOfPredicates, 66 NumberOfNonLiveVariables, 8016 ConjunctsInSsa, 354 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 425430/459398 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...