./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label35.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label35.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c82bf5b7690ad17fb63122c17a8f7bc4a1a449d24f838058a36191ab39e97bc1
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 23:56:23,260 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 23:56:23,262 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 23:56:23,290 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 23:56:23,290 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 23:56:23,291 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 23:56:23,293 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 23:56:23,295 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 23:56:23,296 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 23:56:23,297 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 23:56:23,298 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 23:56:23,299 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 23:56:23,299 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 23:56:23,300 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 23:56:23,301 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 23:56:23,302 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 23:56:23,303 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 23:56:23,303 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 23:56:23,305 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 23:56:23,307 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 23:56:23,308 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 23:56:23,309 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 23:56:23,310 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 23:56:23,311 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 23:56:23,314 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 23:56:23,314 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 23:56:23,314 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 23:56:23,315 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 23:56:23,316 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 23:56:23,316 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 23:56:23,317 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 23:56:23,317 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 23:56:23,318 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 23:56:23,319 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 23:56:23,319 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 23:56:23,320 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 23:56:23,320 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 23:56:23,320 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 23:56:23,320 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 23:56:23,321 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 23:56:23,321 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 23:56:23,322 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 23:56:23,338 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 23:56:23,338 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 23:56:23,339 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 23:56:23,339 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 23:56:23,339 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 23:56:23,339 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 23:56:23,340 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 23:56:23,340 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 23:56:23,340 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 23:56:23,340 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 23:56:23,340 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 23:56:23,340 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 23:56:23,340 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 23:56:23,341 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 23:56:23,341 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 23:56:23,342 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 23:56:23,342 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 23:56:23,343 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 23:56:23,343 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 23:56:23,343 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 23:56:23,343 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 23:56:23,343 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/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_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa
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 -> 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 -> c82bf5b7690ad17fb63122c17a8f7bc4a1a449d24f838058a36191ab39e97bc1
[2021-12-06 23:56:23,528 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 23:56:23,548 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 23:56:23,550 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 23:56:23,551 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 23:56:23,552 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 23:56:23,553 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label35.c
[2021-12-06 23:56:23,597 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/data/4d5403c39/5c75e011d4c94963aa3294fcd821ff7e/FLAGa0411306a
[2021-12-06 23:56:25,020 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 23:56:25,020 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/sv-benchmarks/c/eca-rers2012/Problem07_label35.c
[2021-12-06 23:56:25,189 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/data/4d5403c39/5c75e011d4c94963aa3294fcd821ff7e/FLAGa0411306a
[2021-12-06 23:56:25,404 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/data/4d5403c39/5c75e011d4c94963aa3294fcd821ff7e
[2021-12-06 23:56:25,411 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 23:56:25,415 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 23:56:25,418 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 23:56:25,418 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 23:56:25,427 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 23:56:25,429 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:25" (1/1) ...
[2021-12-06 23:56:25,433 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd773ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:25, skipping insertion in model container
[2021-12-06 23:56:25,434 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:25" (1/1) ...
[2021-12-06 23:56:25,453 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 23:56:26,148 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 23:56:36,000 WARN  L230   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_98002e25-2194-4018-ae2d-88409c6e0ea2/sv-benchmarks/c/eca-rers2012/Problem07_label35.c[2768136,2768149]
[2021-12-06 23:56:36,082 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 23:56:36,089 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 23:56:41,961 WARN  L230   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_98002e25-2194-4018-ae2d-88409c6e0ea2/sv-benchmarks/c/eca-rers2012/Problem07_label35.c[2768136,2768149]
[2021-12-06 23:56:41,971 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 23:56:42,614 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 23:56:42,614 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42 WrapperNode
[2021-12-06 23:56:42,614 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 23:56:42,615 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 23:56:42,615 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 23:56:42,615 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 23:56:42,620 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:42,904 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:43,991 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 23:56:43,991 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 23:56:43,992 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 23:56:43,992 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 23:56:43,992 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 23:56:43,999 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:44,000 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:44,244 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:44,245 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:44,818 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:44,929 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:45,047 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:45,331 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 23:56:45,332 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 23:56:45,332 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 23:56:45,332 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 23:56:45,333 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (1/1) ...
[2021-12-06 23:56:45,339 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 23:56:45,347 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 23:56:45,358 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 23:56:45,361 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98002e25-2194-4018-ae2d-88409c6e0ea2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 23:56:45,396 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 23:56:45,396 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 23:56:45,397 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 23:56:45,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 23:56:45,484 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 23:56:45,485 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 23:57:08,754 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 23:57:08,796 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 23:57:08,796 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 23:57:08,804 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:57:08 BoogieIcfgContainer
[2021-12-06 23:57:08,804 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 23:57:08,806 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 23:57:08,806 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 23:57:08,808 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 23:57:08,808 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:56:25" (1/3) ...
[2021-12-06 23:57:08,809 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe3d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:57:08, skipping insertion in model container
[2021-12-06 23:57:08,809 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:42" (2/3) ...
[2021-12-06 23:57:08,809 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe3d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:57:08, skipping insertion in model container
[2021-12-06 23:57:08,809 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:57:08" (3/3) ...
[2021-12-06 23:57:08,810 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label35.c
[2021-12-06 23:57:08,814 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 23:57:08,814 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 23:57:08,878 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 23:57:08,884 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 23:57:08,884 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 23:57:09,015 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:57:09,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10095
[2021-12-06 23:57:09,551 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:57:09,557 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:57:09,560 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:57:09,572 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:57:09,577 INFO  L85        PathProgramCache]: Analyzing trace with hash -1985467174, now seen corresponding path program 1 times
[2021-12-06 23:57:09,584 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:57:09,584 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193117702]
[2021-12-06 23:57:09,587 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:57:09,587 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:57:11,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:57:30,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:57:30,288 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:57:30,288 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193117702]
[2021-12-06 23:57:30,289 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193117702] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:57:30,289 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:57:30,290 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:57:30,292 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016525605]
[2021-12-06 23:57:30,292 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:57:30,305 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:57:30,305 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:57:30,324 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:57:30,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:57:30,345 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3364.6666666666665) internal successors, (10094), 2 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:57:53,316 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:57:53,317 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 23:57:53,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:57:53,320 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3364.6666666666665) internal successors, (10094), 2 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10094
[2021-12-06 23:57:53,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:57:53,441 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 23:57:53,441 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 23:57:53,455 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:57:53,458 INFO  L933         BasicCegarLoop]: 4840 mSDtfsCounter, 3140 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29575 mSolverCounterSat, 11263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 40838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11263 IncrementalHoareTripleChecker+Valid, 29575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time
[2021-12-06 23:57:53,459 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 4893 Invalid, 40838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11263 Valid, 29575 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time]
[2021-12-06 23:57:53,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 23:57:53,836 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 23:57:53,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7562674778001275) internal successors, (35798), 20383 states have internal predecessors, (35798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:57:53,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 35798 transitions.
[2021-12-06 23:57:53,914 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 35798 transitions. Word has length 10094
[2021-12-06 23:57:53,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:57:53,927 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 35798 transitions.
[2021-12-06 23:57:53,929 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3364.6666666666665) internal successors, (10094), 2 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:57:53,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 35798 transitions.
[2021-12-06 23:57:54,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10101
[2021-12-06 23:57:54,586 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:57:54,591 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 23:57:54,591 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 23:57:54,591 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:57:54,592 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:57:54,597 INFO  L85        PathProgramCache]: Analyzing trace with hash 1232764189, now seen corresponding path program 1 times
[2021-12-06 23:57:54,598 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:57:54,598 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393185063]
[2021-12-06 23:57:54,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:57:54,600 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:57:55,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:58:12,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:58:12,862 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:58:12,862 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393185063]
[2021-12-06 23:58:12,863 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393185063] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:58:12,863 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:58:12,864 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:58:12,864 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591114129]
[2021-12-06 23:58:12,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:58:12,871 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:58:12,872 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:58:12,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:58:12,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:58:12,876 INFO  L87              Difference]: Start difference. First operand 20384 states and 35798 transitions. Second operand  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:58:36,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:58:36,475 INFO  L93              Difference]: Finished difference Result 61146 states and 107389 transitions.
[2021-12-06 23:58:36,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:58:36,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10100
[2021-12-06 23:58:36,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:58:36,542 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 23:58:36,542 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 23:58:36,561 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:58:36,562 INFO  L933         BasicCegarLoop]: 4819 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 23:58:36,563 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 4868 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 23:58:36,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 23:58:36,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 23:58:36,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.578514829624905) internal successors, (64345), 40763 states have internal predecessors, (64345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:58:37,046 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 64345 transitions.
[2021-12-06 23:58:37,047 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 64345 transitions. Word has length 10100
[2021-12-06 23:58:37,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:58:37,049 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 64345 transitions.
[2021-12-06 23:58:37,050 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:58:37,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 64345 transitions.
[2021-12-06 23:58:37,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2021-12-06 23:58:37,643 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:58:37,647 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:58:37,648 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 23:58:37,648 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:58:37,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:58:37,651 INFO  L85        PathProgramCache]: Analyzing trace with hash 625485193, now seen corresponding path program 1 times
[2021-12-06 23:58:37,652 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:58:37,652 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372595971]
[2021-12-06 23:58:37,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:58:37,653 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:58:38,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:58:55,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-12-06 23:58:55,953 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:58:55,953 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372595971]
[2021-12-06 23:58:55,953 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372595971] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:58:55,953 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:58:55,955 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:58:55,955 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316133719]
[2021-12-06 23:58:55,955 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:58:55,967 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:58:55,968 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:58:55,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:58:55,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:58:55,970 INFO  L87              Difference]: Start difference. First operand 40764 states and 64345 transitions. Second operand  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:59:20,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:59:20,656 INFO  L93              Difference]: Finished difference Result 122286 states and 193030 transitions.
[2021-12-06 23:59:20,656 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:59:20,657 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10128
[2021-12-06 23:59:20,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:59:20,742 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 23:59:20,743 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 23:59:20,773 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:59:20,774 INFO  L933         BasicCegarLoop]: 9509 mSDtfsCounter, 10243 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32553 mSolverCounterSat, 9364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10243 SdHoareTripleChecker+Valid, 9558 SdHoareTripleChecker+Invalid, 41917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9364 IncrementalHoareTripleChecker+Valid, 32553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-06 23:59:20,774 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10243 Valid, 9558 Invalid, 41917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9364 Valid, 32553 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-06 23:59:20,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 23:59:21,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 23:59:21,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.3586227199685978) internal successors, (110759), 81523 states have internal predecessors, (110759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:59:21,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 110759 transitions.
[2021-12-06 23:59:21,591 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 110759 transitions. Word has length 10128
[2021-12-06 23:59:21,593 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:59:21,593 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 110759 transitions.
[2021-12-06 23:59:21,594 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:59:21,594 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 110759 transitions.
[2021-12-06 23:59:22,232 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10132
[2021-12-06 23:59:22,232 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:59:22,237 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 23:59:22,237 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 23:59:22,237 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:59:22,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:59:22,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 921154642, now seen corresponding path program 1 times
[2021-12-06 23:59:22,241 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:59:22,241 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343833603]
[2021-12-06 23:59:22,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:59:22,242 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:59:23,030 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:59:38,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:59:38,796 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:59:38,796 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343833603]
[2021-12-06 23:59:38,796 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343833603] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:59:38,796 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:59:38,798 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:59:38,798 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724227934]
[2021-12-06 23:59:38,798 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:59:38,804 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:59:38,804 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:59:38,804 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:59:38,805 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:59:38,806 INFO  L87              Difference]: Start difference. First operand 81524 states and 110759 transitions. Second operand  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:03,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:00:03,520 INFO  L93              Difference]: Finished difference Result 244566 states and 332272 transitions.
[2021-12-07 00:00:03,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:00:03,522 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10131
[2021-12-07 00:00:03,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:00:03,673 INFO  L225             Difference]: With dead ends: 244566
[2021-12-07 00:00:03,673 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-07 00:00:03,698 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:00:03,699 INFO  L933         BasicCegarLoop]: 7745 mSDtfsCounter, 12088 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27826 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12088 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 40856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-07 00:00:03,699 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12088 Valid, 7794 Invalid, 40856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27826 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-07 00:00:03,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-07 00:00:04,876 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-07 00:00:04,955 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.2584962249222598) internal successors, (205189), 163043 states have internal predecessors, (205189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:05,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 205189 transitions.
[2021-12-07 00:00:05,280 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 205189 transitions. Word has length 10131
[2021-12-07 00:00:05,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:00:05,282 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 205189 transitions.
[2021-12-07 00:00:05,284 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:05,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 205189 transitions.
[2021-12-07 00:00:05,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10164
[2021-12-07 00:00:05,999 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:00:06,004 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:00:06,004 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-07 00:00:06,005 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:00:06,005 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:00:06,008 INFO  L85        PathProgramCache]: Analyzing trace with hash 1159908354, now seen corresponding path program 1 times
[2021-12-07 00:00:06,008 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:00:06,009 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380868354]
[2021-12-07 00:00:06,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:00:06,010 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:00:06,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:00:22,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:00:22,733 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:00:22,733 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380868354]
[2021-12-07 00:00:22,733 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380868354] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:00:22,733 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:00:22,735 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:00:22,735 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895543616]
[2021-12-07 00:00:22,735 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:00:22,741 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:00:22,741 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:00:22,742 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:00:22,742 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:00:22,744 INFO  L87              Difference]: Start difference. First operand 163044 states and 205189 transitions. Second operand  has 3 states, 3 states have (on average 3387.6666666666665) internal successors, (10163), 2 states have internal predecessors, (10163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:48,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:00:48,027 INFO  L93              Difference]: Finished difference Result 489126 states and 615562 transitions.
[2021-12-07 00:00:48,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:00:48,029 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3387.6666666666665) internal successors, (10163), 2 states have internal predecessors, (10163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10163
[2021-12-07 00:00:48,029 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:00:48,365 INFO  L225             Difference]: With dead ends: 489126
[2021-12-07 00:00:48,366 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-07 00:00:48,432 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:00:48,432 INFO  L933         BasicCegarLoop]: 6788 mSDtfsCounter, 12407 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29266 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12407 SdHoareTripleChecker+Valid, 6837 SdHoareTripleChecker+Invalid, 41021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-07 00:00:48,433 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12407 Valid, 6837 Invalid, 41021 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29266 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-07 00:00:48,634 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-07 00:00:50,893 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-07 00:00:51,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.1961770469481696) internal successors, (390053), 326083 states have internal predecessors, (390053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:51,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 390053 transitions.
[2021-12-07 00:00:51,599 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 390053 transitions. Word has length 10163
[2021-12-07 00:00:51,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:00:51,601 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 390053 transitions.
[2021-12-07 00:00:51,602 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3387.6666666666665) internal successors, (10163), 2 states have internal predecessors, (10163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:00:51,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 390053 transitions.
[2021-12-07 00:00:52,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10282
[2021-12-07 00:00:52,584 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:00:52,588 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-07 00:00:52,588 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-07 00:00:52,588 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:00:52,589 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:00:52,592 INFO  L85        PathProgramCache]: Analyzing trace with hash -2103800485, now seen corresponding path program 1 times
[2021-12-07 00:00:52,592 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:00:52,592 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986895191]
[2021-12-07 00:00:52,593 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:00:52,593 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:00:53,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:01:09,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:01:09,538 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:01:09,538 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986895191]
[2021-12-07 00:01:09,538 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986895191] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:01:09,538 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:01:09,540 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:01:09,540 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936168184]
[2021-12-07 00:01:09,540 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:01:09,546 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:01:09,546 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:01:09,546 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:01:09,546 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:01:09,548 INFO  L87              Difference]: Start difference. First operand 326084 states and 390053 transitions. Second operand  has 3 states, 3 states have (on average 3427.0) internal successors, (10281), 2 states have internal predecessors, (10281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:01:35,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:01:35,747 INFO  L93              Difference]: Finished difference Result 978246 states and 1170154 transitions.
[2021-12-07 00:01:35,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:01:35,749 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3427.0) internal successors, (10281), 2 states have internal predecessors, (10281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10281
[2021-12-07 00:01:35,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:01:36,398 INFO  L225             Difference]: With dead ends: 978246
[2021-12-07 00:01:36,398 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-07 00:01:36,518 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:01:36,519 INFO  L933         BasicCegarLoop]: 9000 mSDtfsCounter, 10749 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31677 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10749 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 42178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-07 00:01:36,519 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10749 Valid, 9049 Invalid, 42178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31677 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-07 00:01:37,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-07 00:01:41,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-07 00:01:41,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1494227670076347) internal successors, (749611), 652163 states have internal predecessors, (749611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:01:43,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 749611 transitions.
[2021-12-07 00:01:43,051 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 749611 transitions. Word has length 10281
[2021-12-07 00:01:43,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:01:43,051 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 749611 transitions.
[2021-12-07 00:01:43,053 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3427.0) internal successors, (10281), 2 states have internal predecessors, (10281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:01:43,053 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 749611 transitions.
[2021-12-07 00:01:44,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10651
[2021-12-07 00:01:44,475 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:01:44,477 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:01:44,477 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-07 00:01:44,477 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:01:44,478 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:01:44,479 INFO  L85        PathProgramCache]: Analyzing trace with hash -1660934541, now seen corresponding path program 1 times
[2021-12-07 00:01:44,479 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:01:44,479 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342903262]
[2021-12-07 00:01:44,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:01:44,480 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:01:45,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:02:02,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 636 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2021-12-07 00:02:02,584 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:02:02,585 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342903262]
[2021-12-07 00:02:02,585 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342903262] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:02:02,585 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:02:02,586 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:02:02,586 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692438573]
[2021-12-07 00:02:02,587 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:02:02,591 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:02:02,591 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:02:02,592 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:02:02,592 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:02:02,594 INFO  L87              Difference]: Start difference. First operand 652164 states and 749611 transitions. Second operand  has 3 states, 3 states have (on average 3522.3333333333335) internal successors, (10567), 2 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:02:31,397 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:02:31,397 INFO  L93              Difference]: Finished difference Result 1956486 states and 2248828 transitions.
[2021-12-07 00:02:31,397 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:02:31,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3522.3333333333335) internal successors, (10567), 2 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10650
[2021-12-07 00:02:31,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:02:32,843 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-07 00:02:32,843 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-07 00:02:33,078 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:02:33,079 INFO  L933         BasicCegarLoop]: 6002 mSDtfsCounter, 12123 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29861 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12123 SdHoareTripleChecker+Valid, 6051 SdHoareTripleChecker+Invalid, 40895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-07 00:02:33,079 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12123 Valid, 6051 Invalid, 40895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29861 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-07 00:02:34,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-07 00:02:43,727 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-07 00:02:44,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.1113527860813617) internal successors, (1449563), 1304323 states have internal predecessors, (1449563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:02:46,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1449563 transitions.
[2021-12-07 00:02:46,344 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1449563 transitions. Word has length 10650
[2021-12-07 00:02:46,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:02:46,345 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1449563 transitions.
[2021-12-07 00:02:46,346 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3522.3333333333335) internal successors, (10567), 2 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:02:46,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1449563 transitions.
[2021-12-07 00:02:48,432 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11099
[2021-12-07 00:02:48,432 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:02:48,435 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 00:02:48,435 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-07 00:02:48,435 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:02:48,435 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:02:48,437 INFO  L85        PathProgramCache]: Analyzing trace with hash -1805955194, now seen corresponding path program 1 times
[2021-12-07 00:02:48,437 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:02:48,437 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819929570]
[2021-12-07 00:02:48,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:02:48,438 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:02:49,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:03:08,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 1233 backedges. 998 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked.
[2021-12-07 00:03:08,142 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:03:08,142 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819929570]
[2021-12-07 00:03:08,142 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819929570] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:03:08,142 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:03:08,144 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:03:08,144 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625115760]
[2021-12-07 00:03:08,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:03:08,148 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:03:08,148 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:03:08,148 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:03:08,148 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:03:08,150 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1449563 transitions. Second operand  has 3 states, 3 states have (on average 3621.3333333333335) internal successors, (10864), 2 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:03:42,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:03:42,319 INFO  L93              Difference]: Finished difference Result 3882396 states and 4314823 transitions.
[2021-12-07 00:03:42,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:03:42,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3621.3333333333335) internal successors, (10864), 2 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11098
[2021-12-07 00:03:42,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:03:45,424 INFO  L225             Difference]: With dead ends: 3882396
[2021-12-07 00:03:45,425 INFO  L226             Difference]: Without dead ends: 2578074
[2021-12-07 00:03:45,870 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:03:45,871 INFO  L933         BasicCegarLoop]: 5909 mSDtfsCounter, 9683 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31792 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9683 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 43356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time
[2021-12-07 00:03:45,871 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9683 Valid, 5958 Invalid, 43356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31792 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time]
[2021-12-07 00:03:48,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2578074 states.
[2021-12-07 00:04:09,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578074 to 2578074.
[2021-12-07 00:04:11,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2578074 states, 2578073 states have (on average 1.0904974374271015) internal successors, (2811382), 2578073 states have internal predecessors, (2811382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:04:15,729 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2578074 states to 2578074 states and 2811382 transitions.
[2021-12-07 00:04:15,730 INFO  L78                 Accepts]: Start accepts. Automaton has 2578074 states and 2811382 transitions. Word has length 11098
[2021-12-07 00:04:15,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:04:15,730 INFO  L470      AbstractCegarLoop]: Abstraction has 2578074 states and 2811382 transitions.
[2021-12-07 00:04:15,732 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3621.3333333333335) internal successors, (10864), 2 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 00:04:15,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 2578074 states and 2811382 transitions.