./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 7b2dab56
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8dca45da3558d3dd2c7a13c991bbb3b579db8dd
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.2.0-7b2dab5
[2021-10-11 02:32:02,437 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-11 02:32:02,440 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-11 02:32:02,488 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-11 02:32:02,489 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-11 02:32:02,494 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-11 02:32:02,496 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-11 02:32:02,500 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-11 02:32:02,502 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-11 02:32:02,508 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-11 02:32:02,510 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-11 02:32:02,511 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-11 02:32:02,511 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-11 02:32:02,514 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-11 02:32:02,516 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-11 02:32:02,519 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-11 02:32:02,520 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-11 02:32:02,525 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-11 02:32:02,527 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-11 02:32:02,537 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-11 02:32:02,538 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-11 02:32:02,540 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-11 02:32:02,542 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-11 02:32:02,543 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-11 02:32:02,546 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-11 02:32:02,546 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-11 02:32:02,547 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-11 02:32:02,548 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-11 02:32:02,548 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-11 02:32:02,550 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-11 02:32:02,550 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-11 02:32:02,551 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-11 02:32:02,552 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-11 02:32:02,553 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-11 02:32:02,554 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-11 02:32:02,554 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-11 02:32:02,555 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-11 02:32:02,555 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-11 02:32:02,555 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-11 02:32:02,556 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-11 02:32:02,557 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-11 02:32:02,558 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf
[2021-10-11 02:32:02,583 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-11 02:32:02,583 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-11 02:32:02,584 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-10-11 02:32:02,584 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2021-10-11 02:32:02,584 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2021-10-11 02:32:02,584 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2021-10-11 02:32:02,585 INFO  L138        SettingsManager]:  * Interval Domain=false
[2021-10-11 02:32:02,586 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2021-10-11 02:32:02,586 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2021-10-11 02:32:02,587 INFO  L138        SettingsManager]:  * Simplification Technique=SIMPLIFY_QUICK
[2021-10-11 02:32:02,588 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-11 02:32:02,588 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-11 02:32:02,588 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-11 02:32:02,589 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-11 02:32:02,589 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-11 02:32:02,589 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-11 02:32:02,589 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-11 02:32:02,589 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-11 02:32:02,590 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2021-10-11 02:32:02,590 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-11 02:32:02,590 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-11 02:32:02,590 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-11 02:32:02,590 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-11 02:32:02,591 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-11 02:32:02,591 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-11 02:32:02,591 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 02:32:02,591 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-11 02:32:02,591 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-11 02:32:02,591 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-10-11 02:32:02,592 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI
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(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
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 -> e8dca45da3558d3dd2c7a13c991bbb3b579db8dd
[2021-10-11 02:32:02,825 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-11 02:32:02,862 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-11 02:32:02,864 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-11 02:32:02,865 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-11 02:32:02,866 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-11 02:32:02,867 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c
[2021-10-11 02:32:02,942 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/data/fa1d35c78/71cb617c0c404c368204123dc0e9fda0/FLAG845b5e931
[2021-10-11 02:32:03,385 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-11 02:32:03,386 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c
[2021-10-11 02:32:03,393 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/data/fa1d35c78/71cb617c0c404c368204123dc0e9fda0/FLAG845b5e931
[2021-10-11 02:32:03,777 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/data/fa1d35c78/71cb617c0c404c368204123dc0e9fda0
[2021-10-11 02:32:03,779 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-11 02:32:03,781 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-11 02:32:03,783 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-11 02:32:03,783 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-11 02:32:03,790 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-11 02:32:03,791 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:03" (1/1) ...
[2021-10-11 02:32:03,793 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c88bf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03, skipping insertion in model container
[2021-10-11 02:32:03,793 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:03" (1/1) ...
[2021-10-11 02:32:03,805 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-11 02:32:03,826 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-11 02:32:03,986 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601]
[2021-10-11 02:32:04,018 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-11 02:32:04,026 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-11 02:32:04,037 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c[588,601]
[2021-10-11 02:32:04,048 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-11 02:32:04,060 INFO  L208         MainTranslator]: Completed translation
[2021-10-11 02:32:04,061 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04 WrapperNode
[2021-10-11 02:32:04,061 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-11 02:32:04,062 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-11 02:32:04,063 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-11 02:32:04,063 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-11 02:32:04,084 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,091 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,141 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-11 02:32:04,144 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-11 02:32:04,145 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-11 02:32:04,145 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-11 02:32:04,153 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,155 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,169 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,171 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,176 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,189 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,191 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
[2021-10-11 02:32:04,193 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-11 02:32:04,202 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-11 02:32:04,202 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-11 02:32:04,202 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-11 02:32:04,203 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (1/1) ...
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/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
[2021-10-11 02:32:04,293 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-11 02:32:04,294 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-11 02:32:04,294 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-11 02:32:04,294 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-11 02:32:04,717 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-11 02:32:04,717 INFO  L299             CfgBuilder]: Removed 27 assume(true) statements.
[2021-10-11 02:32:04,719 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04 BoogieIcfgContainer
[2021-10-11 02:32:04,720 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-11 02:32:04,721 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-11 02:32:04,722 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-11 02:32:04,726 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-11 02:32:04,726 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:03" (1/3) ...
[2021-10-11 02:32:04,727 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13971036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:04, skipping insertion in model container
[2021-10-11 02:32:04,727 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:04" (2/3) ...
[2021-10-11 02:32:04,728 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13971036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:04, skipping insertion in model container
[2021-10-11 02:32:04,728 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04" (3/3) ...
[2021-10-11 02:32:04,729 INFO  L111   eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c
[2021-10-11 02:32:04,744 INFO  L180   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-11 02:32:04,748 INFO  L192   ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations.
[2021-10-11 02:32:04,759 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2021-10-11 02:32:04,783 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2021-10-11 02:32:04,783 INFO  L378      AbstractCegarLoop]: Hoare is true
[2021-10-11 02:32:04,783 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-10-11 02:32:04,783 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-10-11 02:32:04,784 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-10-11 02:32:04,784 INFO  L382      AbstractCegarLoop]: Difference is false
[2021-10-11 02:32:04,784 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-10-11 02:32:04,784 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-10-11 02:32:04,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states.
[2021-10-11 02:32:04,804 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2021-10-11 02:32:04,804 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:04,805 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2021-10-11 02:32:04,806 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:04,811 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:04,812 INFO  L82        PathProgramCache]: Analyzing trace with hash 162760247, now seen corresponding path program 1 times
[2021-10-11 02:32:04,821 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:04,822 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753562502]
[2021-10-11 02:32:04,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:04,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 02:32:05,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:05,107 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753562502]
[2021-10-11 02:32:05,108 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 02:32:05,109 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-11 02:32:05,110 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784978893]
[2021-10-11 02:32:05,114 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-10-11 02:32:05,115 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-11 02:32:05,128 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-11 02:32:05,129 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-11 02:32:05,130 INFO  L87              Difference]: Start difference. First operand 49 states. Second operand 4 states.
[2021-10-11 02:32:05,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 02:32:05,344 INFO  L93              Difference]: Finished difference Result 96 states and 124 transitions.
[2021-10-11 02:32:05,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-11 02:32:05,346 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 5
[2021-10-11 02:32:05,346 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 02:32:05,363 INFO  L225             Difference]: With dead ends: 96
[2021-10-11 02:32:05,364 INFO  L226             Difference]: Without dead ends: 46
[2021-10-11 02:32:05,373 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-11 02:32:05,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-10-11 02:32:05,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43.
[2021-10-11 02:32:05,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2021-10-11 02:32:05,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2021-10-11 02:32:05,429 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 5
[2021-10-11 02:32:05,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-11 02:32:05,429 INFO  L481      AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2021-10-11 02:32:05,429 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-10-11 02:32:05,429 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2021-10-11 02:32:05,430 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-10-11 02:32:05,430 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:05,430 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-10-11 02:32:05,431 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-11 02:32:05,433 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:05,443 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:05,443 INFO  L82        PathProgramCache]: Analyzing trace with hash 1793930266, now seen corresponding path program 1 times
[2021-10-11 02:32:05,443 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:05,443 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840728838]
[2021-10-11 02:32:05,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:05,493 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-11 02:32:05,493 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526127447]
[2021-10-11 02:32:05,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:05,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 02:32:05,589 INFO  L263         TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-10-11 02:32:05,594 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 02:32:05,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:05,726 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-10-11 02:32:05,834 INFO  L398       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2021-10-11 02:32:05,835 INFO  L639       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2021-10-11 02:32:05,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:05,860 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840728838]
[2021-10-11 02:32:05,860 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-11 02:32:05,860 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526127447]
[2021-10-11 02:32:05,861 INFO  L219   FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2021-10-11 02:32:05,861 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2021-10-11 02:32:05,861 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393800387]
[2021-10-11 02:32:05,862 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 02:32:05,863 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-11 02:32:05,863 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 02:32:05,864 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2021-10-11 02:32:05,864 INFO  L87              Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states.
[2021-10-11 02:32:10,283 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 02:32:10,284 INFO  L93              Difference]: Finished difference Result 115 states and 118 transitions.
[2021-10-11 02:32:10,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-10-11 02:32:10,285 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 7
[2021-10-11 02:32:10,285 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 02:32:10,286 INFO  L225             Difference]: With dead ends: 115
[2021-10-11 02:32:10,286 INFO  L226             Difference]: Without dead ends: 107
[2021-10-11 02:32:10,288 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2021-10-11 02:32:10,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2021-10-11 02:32:10,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 70.
[2021-10-11 02:32:10,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2021-10-11 02:32:10,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions.
[2021-10-11 02:32:10,304 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 7
[2021-10-11 02:32:10,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-11 02:32:10,305 INFO  L481      AbstractCegarLoop]: Abstraction has 70 states and 78 transitions.
[2021-10-11 02:32:10,305 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 02:32:10,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions.
[2021-10-11 02:32:10,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-10-11 02:32:10,306 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:10,306 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 02:32:10,526 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-10-11 02:32:10,527 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:10,527 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:10,527 INFO  L82        PathProgramCache]: Analyzing trace with hash -227354147, now seen corresponding path program 1 times
[2021-10-11 02:32:10,528 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:10,528 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741558297]
[2021-10-11 02:32:10,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:10,560 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-11 02:32:10,560 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392144970]
[2021-10-11 02:32:10,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:10,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 02:32:10,611 INFO  L263         TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-10-11 02:32:10,612 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 02:32:10,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:10,642 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-10-11 02:32:10,661 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:10,662 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741558297]
[2021-10-11 02:32:10,662 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-11 02:32:10,662 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392144970]
[2021-10-11 02:32:10,662 INFO  L219   FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2021-10-11 02:32:10,662 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2021-10-11 02:32:10,663 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675354122]
[2021-10-11 02:32:10,663 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-10-11 02:32:10,663 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-11 02:32:10,664 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-11 02:32:10,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-11 02:32:10,665 INFO  L87              Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 4 states.
[2021-10-11 02:32:10,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 02:32:10,692 INFO  L93              Difference]: Finished difference Result 88 states and 95 transitions.
[2021-10-11 02:32:10,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-11 02:32:10,692 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 8
[2021-10-11 02:32:10,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 02:32:10,694 INFO  L225             Difference]: With dead ends: 88
[2021-10-11 02:32:10,694 INFO  L226             Difference]: Without dead ends: 70
[2021-10-11 02:32:10,694 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-11 02:32:10,695 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2021-10-11 02:32:10,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2021-10-11 02:32:10,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2021-10-11 02:32:10,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions.
[2021-10-11 02:32:10,707 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 8
[2021-10-11 02:32:10,708 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-11 02:32:10,708 INFO  L481      AbstractCegarLoop]: Abstraction has 70 states and 77 transitions.
[2021-10-11 02:32:10,708 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-10-11 02:32:10,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions.
[2021-10-11 02:32:10,708 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-10-11 02:32:10,709 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:10,709 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 02:32:10,922 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:10,923 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:10,923 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:10,923 INFO  L82        PathProgramCache]: Analyzing trace with hash 1685255837, now seen corresponding path program 1 times
[2021-10-11 02:32:10,923 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:10,923 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202448428]
[2021-10-11 02:32:10,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:10,935 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-11 02:32:10,936 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314416067]
[2021-10-11 02:32:10,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:10,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 02:32:10,993 INFO  L263         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-10-11 02:32:10,996 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 02:32:11,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:11,094 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-10-11 02:32:11,161 INFO  L398       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2021-10-11 02:32:11,162 INFO  L639       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2021-10-11 02:32:11,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:11,189 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202448428]
[2021-10-11 02:32:11,189 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-11 02:32:11,190 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314416067]
[2021-10-11 02:32:11,190 INFO  L219   FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2021-10-11 02:32:11,190 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2021-10-11 02:32:11,190 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347545988]
[2021-10-11 02:32:11,192 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 02:32:11,194 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-11 02:32:11,194 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 02:32:11,196 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2021-10-11 02:32:11,196 INFO  L87              Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 10 states.
[2021-10-11 02:32:11,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 02:32:11,505 INFO  L93              Difference]: Finished difference Result 104 states and 105 transitions.
[2021-10-11 02:32:11,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-10-11 02:32:11,506 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 9
[2021-10-11 02:32:11,506 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 02:32:11,507 INFO  L225             Difference]: With dead ends: 104
[2021-10-11 02:32:11,507 INFO  L226             Difference]: Without dead ends: 100
[2021-10-11 02:32:11,508 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156
[2021-10-11 02:32:11,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2021-10-11 02:32:11,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70.
[2021-10-11 02:32:11,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2021-10-11 02:32:11,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions.
[2021-10-11 02:32:11,520 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 9
[2021-10-11 02:32:11,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-11 02:32:11,520 INFO  L481      AbstractCegarLoop]: Abstraction has 70 states and 75 transitions.
[2021-10-11 02:32:11,520 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 02:32:11,520 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions.
[2021-10-11 02:32:11,521 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-11 02:32:11,521 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:11,521 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 02:32:11,726 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:11,727 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:11,727 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:11,727 INFO  L82        PathProgramCache]: Analyzing trace with hash 328345024, now seen corresponding path program 1 times
[2021-10-11 02:32:11,727 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:11,728 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037024387]
[2021-10-11 02:32:11,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:11,744 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-11 02:32:11,748 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612122716]
[2021-10-11 02:32:11,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:11,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 02:32:11,813 INFO  L263         TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-10-11 02:32:11,815 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 02:32:11,899 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:11,900 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2021-10-11 02:32:11,990 INFO  L398       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2021-10-11 02:32:11,990 INFO  L639       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2021-10-11 02:32:12,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 02:32:12,025 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037024387]
[2021-10-11 02:32:12,025 WARN  L332   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-11 02:32:12,027 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612122716]
[2021-10-11 02:32:12,027 INFO  L219   FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences.
[2021-10-11 02:32:12,027 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2021-10-11 02:32:12,028 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553586084]
[2021-10-11 02:32:12,029 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 02:32:12,029 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2021-10-11 02:32:12,030 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 02:32:12,031 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2021-10-11 02:32:12,031 INFO  L87              Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 10 states.
[2021-10-11 02:32:12,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 02:32:12,541 INFO  L93              Difference]: Finished difference Result 106 states and 109 transitions.
[2021-10-11 02:32:12,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-10-11 02:32:12,541 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 11
[2021-10-11 02:32:12,541 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 02:32:12,543 INFO  L225             Difference]: With dead ends: 106
[2021-10-11 02:32:12,544 INFO  L226             Difference]: Without dead ends: 86
[2021-10-11 02:32:12,544 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156
[2021-10-11 02:32:12,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2021-10-11 02:32:12,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74.
[2021-10-11 02:32:12,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2021-10-11 02:32:12,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions.
[2021-10-11 02:32:12,557 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 11
[2021-10-11 02:32:12,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-11 02:32:12,557 INFO  L481      AbstractCegarLoop]: Abstraction has 74 states and 80 transitions.
[2021-10-11 02:32:12,557 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 02:32:12,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions.
[2021-10-11 02:32:12,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-10-11 02:32:12,558 INFO  L414         BasicCegarLoop]: Found error trace
[2021-10-11 02:32:12,558 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 02:32:12,766 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:12,767 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 02:32:12,767 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 02:32:12,767 INFO  L82        PathProgramCache]: Analyzing trace with hash -1350588059, now seen corresponding path program 1 times
[2021-10-11 02:32:12,767 INFO  L162   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2021-10-11 02:32:12,768 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018803962]
[2021-10-11 02:32:12,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 02:32:12,798 ERROR L270   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-11 02:32:12,801 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788532380]
[2021-10-11 02:32:12,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 02:32:12,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-11 02:32:12,853 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-11 02:32:12,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-11 02:32:12,870 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-11 02:32:12,938 INFO  L173   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2021-10-11 02:32:12,938 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-10-11 02:32:13,152 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-10-11 02:32:13,185 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:13 BoogieIcfgContainer
[2021-10-11 02:32:13,185 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-11 02:32:13,186 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-11 02:32:13,186 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-11 02:32:13,186 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-11 02:32:13,187 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04" (3/4) ...
[2021-10-11 02:32:13,189 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-11 02:32:13,240 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5b77cf-ff8b-4ce2-b296-32191f26ed24/bin/utaipan-WLngWcDbfI/witness.graphml
[2021-10-11 02:32:13,241 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-11 02:32:13,243 INFO  L168              Benchmark]: Toolchain (without parser) took 9460.68 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 51.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,243 INFO  L168              Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,244 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 278.92 ms. Allocated memory is still 98.6 MB. Free memory was 66.2 MB in the beginning and 74.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,245 INFO  L168              Benchmark]: Boogie Procedure Inliner took 81.21 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,245 INFO  L168              Benchmark]: Boogie Preprocessor took 56.85 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,246 INFO  L168              Benchmark]: RCFGBuilder took 518.15 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 51.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,247 INFO  L168              Benchmark]: TraceAbstraction took 8463.87 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 51.3 MB in the beginning and 54.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,247 INFO  L168              Benchmark]: Witness Printer took 55.02 ms. Allocated memory is still 119.5 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 02:32:13,251 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 278.92 ms. Allocated memory is still 98.6 MB. Free memory was 66.2 MB in the beginning and 74.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 81.21 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 56.85 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 518.15 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 51.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 8463.87 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 51.3 MB in the beginning and 54.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB.
 * Witness Printer took 55.02 ms. Allocated memory is still 119.5 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 17]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L22]              int counter = 0;
[L24]              short a;
[L25]              long long n, x, y, z;
[L26]              a = __VERIFIER_nondet_ushort()
[L28]              n = 0
[L29]              x = 0
[L30]              y = 1
[L31]              z = 6
       VAL         [counter=0]
[L33]  EXPR        counter++
       VAL         [counter=1]
[L33]  COND TRUE   counter++<1
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L39]  COND FALSE  !(!(n <= a))
[L42]              n = n + 1
[L43]              x = x + y
[L44]              y = y + z
[L45]              z = z + 6
       VAL         [counter=1]
[L33]  EXPR        counter++
       VAL         [counter=2]
[L33]  COND FALSE  !(counter++<1)
[L15]  COND FALSE  !(!(cond))
       VAL         [counter=2]
[L15]  COND TRUE   !(cond)
       VAL         [counter=2]
[L17]              reach_error()
       VAL         [counter=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 49 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 417 SDslu, 365 SDs, 0 SdLazy, 405 SolverSat, 297 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 82 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 4350 SizeOfPredicates, 19 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...