./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label44.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 38b53e6a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R --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 3542ad3d447b947690b49c5fc158285b42adda78f0fdce0b42f6bfc41ea9f09f
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-38b53e6
[2022-11-25 16:42:25,825 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-25 16:42:25,827 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 16:42:25,852 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 16:42:25,855 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 16:42:25,860 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 16:42:25,863 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 16:42:25,867 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 16:42:25,873 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 16:42:25,875 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 16:42:25,876 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 16:42:25,878 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 16:42:25,880 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 16:42:25,884 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 16:42:25,886 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 16:42:25,889 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 16:42:25,892 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 16:42:25,899 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 16:42:25,901 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 16:42:25,903 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 16:42:25,909 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 16:42:25,910 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 16:42:25,912 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 16:42:25,912 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 16:42:25,916 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 16:42:25,916 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 16:42:25,916 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 16:42:25,917 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 16:42:25,918 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 16:42:25,919 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 16:42:25,919 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 16:42:25,920 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 16:42:25,921 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 16:42:25,922 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 16:42:25,923 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 16:42:25,926 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 16:42:25,929 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 16:42:25,929 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 16:42:25,929 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 16:42:25,931 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 16:42:25,932 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 16:42:25,933 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-25 16:42:25,982 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-25 16:42:25,982 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 16:42:25,983 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 16:42:25,983 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 16:42:25,984 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 16:42:25,985 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 16:42:25,985 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 16:42:25,986 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-25 16:42:25,986 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-25 16:42:25,986 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 16:42:25,987 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-25 16:42:25,988 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-25 16:42:25,988 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-25 16:42:25,988 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-25 16:42:25,988 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 16:42:25,989 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 16:42:25,989 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 16:42:25,989 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-25 16:42:25,989 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-25 16:42:25,989 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-25 16:42:25,990 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-25 16:42:25,990 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 16:42:25,990 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-25 16:42:25,990 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-25 16:42:25,991 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 16:42:25,991 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 16:42:25,991 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 16:42:25,991 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 16:42:25,992 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-25 16:42:25,992 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 16:42:25,993 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 16:42:25,993 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 16:42:25,993 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 16:42:25,994 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 16:42:25,994 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/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_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R
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 -> 3542ad3d447b947690b49c5fc158285b42adda78f0fdce0b42f6bfc41ea9f09f
[2022-11-25 16:42:26,258 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 16:42:26,290 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 16:42:26,294 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 16:42:26,295 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-25 16:42:26,296 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-25 16:42:26,297 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem19_label44.c
[2022-11-25 16:42:29,369 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-25 16:42:30,103 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-25 16:42:30,104 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/sv-benchmarks/c/eca-rers2012/Problem19_label44.c
[2022-11-25 16:42:30,156 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/data/2adacf067/91d20bdf017f4dd089270fac9a5d61e2/FLAG34890b924
[2022-11-25 16:42:30,174 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/data/2adacf067/91d20bdf017f4dd089270fac9a5d61e2
[2022-11-25 16:42:30,178 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 16:42:30,182 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 16:42:30,184 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 16:42:30,184 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 16:42:30,190 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 16:42:30,191 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:30" (1/1) ...
[2022-11-25 16:42:30,192 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738448b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:30, skipping insertion in model container
[2022-11-25 16:42:30,193 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:30" (1/1) ...
[2022-11-25 16:42:30,201 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-25 16:42:30,456 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-25 16:42:30,776 WARN  L237   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_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/sv-benchmarks/c/eca-rers2012/Problem19_label44.c[4684,4697]
[2022-11-25 16:42:32,490 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 16:42:32,503 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-25 16:42:32,540 WARN  L237   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_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/sv-benchmarks/c/eca-rers2012/Problem19_label44.c[4684,4697]
[2022-11-25 16:42:33,577 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 16:42:33,616 INFO  L208         MainTranslator]: Completed translation
[2022-11-25 16:42:33,616 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33 WrapperNode
[2022-11-25 16:42:33,617 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 16:42:33,618 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 16:42:33,618 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 16:42:33,618 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 16:42:33,627 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:33,787 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:34,896 INFO  L138                Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425
[2022-11-25 16:42:34,896 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 16:42:34,897 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 16:42:34,897 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 16:42:34,897 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 16:42:34,916 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:34,916 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,253 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,254 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,651 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,710 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,809 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:35,907 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:36,127 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 16:42:36,142 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 16:42:36,142 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 16:42:36,142 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-25 16:42:36,143 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (1/1) ...
[2022-11-25 16:42:36,151 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 16:42:36,174 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:42:36,218 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 16:42:36,256 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 16:42:36,304 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 16:42:36,305 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 16:42:36,305 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 16:42:36,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 16:42:36,458 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-25 16:42:36,461 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 16:42:47,046 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-25 16:42:47,087 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 16:42:47,087 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-25 16:42:47,092 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:47 BoogieIcfgContainer
[2022-11-25 16:42:47,093 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 16:42:47,096 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 16:42:47,097 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 16:42:47,100 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-25 16:42:47,100 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:30" (1/3) ...
[2022-11-25 16:42:47,102 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccd2e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:47, skipping insertion in model container
[2022-11-25 16:42:47,102 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:33" (2/3) ...
[2022-11-25 16:42:47,103 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccd2e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:47, skipping insertion in model container
[2022-11-25 16:42:47,104 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:47" (3/3) ...
[2022-11-25 16:42:47,108 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem19_label44.c
[2022-11-25 16:42:47,128 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 16:42:47,129 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-25 16:42:47,238 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 16:42:47,251 INFO  L357      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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5193531e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 16:42:47,251 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-25 16:42:47,264 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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)
[2022-11-25 16:42:47,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-11-25 16:42:47,275 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:42:47,276 INFO  L195           NwaCegarLoop]: 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]
[2022-11-25 16:42:47,277 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:42:47,281 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:42:47,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 1089129850, now seen corresponding path program 1 times
[2022-11-25 16:42:47,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:42:47,292 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585331711]
[2022-11-25 16:42:47,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:42:47,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:42:47,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:42:47,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 16:42:47,844 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:42:47,844 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585331711]
[2022-11-25 16:42:47,845 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585331711] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:42:47,845 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:42:47,845 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 16:42:47,847 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348512933]
[2022-11-25 16:42:47,848 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:42:47,853 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 16:42:47,853 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:42:47,897 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 16:42:47,899 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-25 16:42:47,906 INFO  L87              Difference]: Start difference. First operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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)
[2022-11-25 16:43:07,358 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:43:07,358 INFO  L93              Difference]: Finished difference Result 6335 states and 12139 transitions.
[2022-11-25 16:43:07,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 16:43:07,366 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 34
[2022-11-25 16:43:07,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:43:07,409 INFO  L225             Difference]: With dead ends: 6335
[2022-11-25 16:43:07,409 INFO  L226             Difference]: Without dead ends: 4520
[2022-11-25 16:43:07,420 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:43:07,424 INFO  L413           NwaCegarLoop]: 1911 mSDtfsCounter, 4286 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11295 mSolverCounterSat, 2249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4286 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 13544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2249 IncrementalHoareTripleChecker+Valid, 11295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time
[2022-11-25 16:43:07,425 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4286 Valid, 2185 Invalid, 13544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2249 Valid, 11295 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time]
[2022-11-25 16:43:07,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4520 states.
[2022-11-25 16:43:07,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4469.
[2022-11-25 16:43:07,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4469 states, 4468 states have (on average 1.5980304386750224) internal successors, (7140), 4468 states have internal predecessors, (7140), 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)
[2022-11-25 16:43:07,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7140 transitions.
[2022-11-25 16:43:07,618 INFO  L78                 Accepts]: Start accepts. Automaton has 4469 states and 7140 transitions. Word has length 34
[2022-11-25 16:43:07,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:43:07,618 INFO  L495      AbstractCegarLoop]: Abstraction has 4469 states and 7140 transitions.
[2022-11-25 16:43:07,619 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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)
[2022-11-25 16:43:07,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 4469 states and 7140 transitions.
[2022-11-25 16:43:07,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 270
[2022-11-25 16:43:07,626 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:43:07,626 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:43:07,627 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-25 16:43:07,627 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:43:07,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:43:07,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -1429871917, now seen corresponding path program 1 times
[2022-11-25 16:43:07,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:43:07,628 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506867485]
[2022-11-25 16:43:07,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:07,629 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:43:07,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:08,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 16:43:08,709 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:43:08,710 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506867485]
[2022-11-25 16:43:08,710 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506867485] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:43:08,711 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:43:08,711 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 16:43:08,711 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748089071]
[2022-11-25 16:43:08,711 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:43:08,714 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 16:43:08,715 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:43:08,715 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 16:43:08,716 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 16:43:08,716 INFO  L87              Difference]: Start difference. First operand 4469 states and 7140 transitions. Second operand  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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)
[2022-11-25 16:43:18,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:43:18,533 INFO  L93              Difference]: Finished difference Result 7602 states and 12932 transitions.
[2022-11-25 16:43:18,533 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 16:43:18,534 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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 269
[2022-11-25 16:43:18,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:43:18,551 INFO  L225             Difference]: With dead ends: 7602
[2022-11-25 16:43:18,551 INFO  L226             Difference]: Without dead ends: 4469
[2022-11-25 16:43:18,555 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 16:43:18,557 INFO  L413           NwaCegarLoop]: 1771 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2022-11-25 16:43:18,557 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2113 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2022-11-25 16:43:18,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4469 states.
[2022-11-25 16:43:18,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4469.
[2022-11-25 16:43:18,641 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4469 states, 4468 states have (on average 1.596016114592659) internal successors, (7131), 4468 states have internal predecessors, (7131), 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)
[2022-11-25 16:43:18,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7131 transitions.
[2022-11-25 16:43:18,650 INFO  L78                 Accepts]: Start accepts. Automaton has 4469 states and 7131 transitions. Word has length 269
[2022-11-25 16:43:18,650 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:43:18,651 INFO  L495      AbstractCegarLoop]: Abstraction has 4469 states and 7131 transitions.
[2022-11-25 16:43:18,651 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 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)
[2022-11-25 16:43:18,651 INFO  L276                IsEmpty]: Start isEmpty. Operand 4469 states and 7131 transitions.
[2022-11-25 16:43:18,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 522
[2022-11-25 16:43:18,663 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:43:18,664 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:43:18,664 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-25 16:43:18,665 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:43:18,665 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:43:18,666 INFO  L85        PathProgramCache]: Analyzing trace with hash 1793257740, now seen corresponding path program 1 times
[2022-11-25 16:43:18,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:43:18,666 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828385914]
[2022-11-25 16:43:18,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:18,667 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:43:18,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:20,410 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 16:43:20,410 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:43:20,410 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828385914]
[2022-11-25 16:43:20,411 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828385914] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 16:43:20,412 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900414498]
[2022-11-25 16:43:20,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:20,413 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:43:20,413 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:43:20,420 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 16:43:20,456 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-25 16:43:20,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:20,749 INFO  L263         TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 16:43:20,783 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 16:43:21,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2022-11-25 16:43:21,677 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 16:43:21,677 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [900414498] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:43:21,677 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 16:43:21,678 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2022-11-25 16:43:21,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143024421]
[2022-11-25 16:43:21,678 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:43:21,680 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:43:21,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:43:21,681 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:43:21,681 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:43:21,682 INFO  L87              Difference]: Start difference. First operand 4469 states and 7131 transitions. Second operand  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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)
[2022-11-25 16:43:29,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:43:29,848 INFO  L93              Difference]: Finished difference Result 10339 states and 18164 transitions.
[2022-11-25 16:43:29,849 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:43:29,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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 521
[2022-11-25 16:43:29,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:43:29,877 INFO  L225             Difference]: With dead ends: 10339
[2022-11-25 16:43:29,878 INFO  L226             Difference]: Without dead ends: 7237
[2022-11-25 16:43:29,884 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:43:29,885 INFO  L413           NwaCegarLoop]: 1209 mSDtfsCounter, 1058 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2022-11-25 16:43:29,885 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1387 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2022-11-25 16:43:29,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7237 states.
[2022-11-25 16:43:30,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236.
[2022-11-25 16:43:30,120 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7236 states, 7235 states have (on average 1.520110573600553) internal successors, (10998), 7235 states have internal predecessors, (10998), 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)
[2022-11-25 16:43:30,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10998 transitions.
[2022-11-25 16:43:30,134 INFO  L78                 Accepts]: Start accepts. Automaton has 7236 states and 10998 transitions. Word has length 521
[2022-11-25 16:43:30,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:43:30,135 INFO  L495      AbstractCegarLoop]: Abstraction has 7236 states and 10998 transitions.
[2022-11-25 16:43:30,136 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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)
[2022-11-25 16:43:30,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 7236 states and 10998 transitions.
[2022-11-25 16:43:30,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 587
[2022-11-25 16:43:30,151 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:43:30,151 INFO  L195           NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:43:30,162 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-25 16:43:30,357 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-11-25 16:43:30,358 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:43:30,358 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:43:30,359 INFO  L85        PathProgramCache]: Analyzing trace with hash -1044783671, now seen corresponding path program 1 times
[2022-11-25 16:43:30,359 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:43:30,359 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514223343]
[2022-11-25 16:43:30,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:30,360 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:43:30,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:30,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2022-11-25 16:43:30,992 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:43:30,992 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514223343]
[2022-11-25 16:43:30,993 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514223343] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:43:30,993 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:43:30,993 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 16:43:30,993 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688453839]
[2022-11-25 16:43:30,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:43:30,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:43:30,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:43:30,998 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:43:30,998 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:43:30,998 INFO  L87              Difference]: Start difference. First operand 7236 states and 10998 transitions. Second operand  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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)
[2022-11-25 16:43:38,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:43:38,342 INFO  L93              Difference]: Finished difference Result 15842 states and 24470 transitions.
[2022-11-25 16:43:38,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:43:38,348 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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 586
[2022-11-25 16:43:38,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:43:38,399 INFO  L225             Difference]: With dead ends: 15842
[2022-11-25 16:43:38,400 INFO  L226             Difference]: Without dead ends: 9973
[2022-11-25 16:43:38,408 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 16:43:38,417 INFO  L413           NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2022-11-25 16:43:38,419 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2022-11-25 16:43:38,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9973 states.
[2022-11-25 16:43:38,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969.
[2022-11-25 16:43:38,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9969 states, 9968 states have (on average 1.390048154093098) internal successors, (13856), 9968 states have internal predecessors, (13856), 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)
[2022-11-25 16:43:38,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13856 transitions.
[2022-11-25 16:43:38,638 INFO  L78                 Accepts]: Start accepts. Automaton has 9969 states and 13856 transitions. Word has length 586
[2022-11-25 16:43:38,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:43:38,640 INFO  L495      AbstractCegarLoop]: Abstraction has 9969 states and 13856 transitions.
[2022-11-25 16:43:38,641 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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)
[2022-11-25 16:43:38,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 9969 states and 13856 transitions.
[2022-11-25 16:43:38,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 611
[2022-11-25 16:43:38,646 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:43:38,647 INFO  L195           NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:43:38,647 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-25 16:43:38,647 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:43:38,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:43:38,648 INFO  L85        PathProgramCache]: Analyzing trace with hash -1730105313, now seen corresponding path program 1 times
[2022-11-25 16:43:38,648 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:43:38,648 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796545415]
[2022-11-25 16:43:38,649 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:38,649 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:43:38,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:39,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2022-11-25 16:43:39,365 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:43:39,365 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796545415]
[2022-11-25 16:43:39,365 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796545415] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:43:39,365 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:43:39,366 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 16:43:39,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691786079]
[2022-11-25 16:43:39,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:43:39,367 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:43:39,367 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:43:39,368 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:43:39,368 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:43:39,368 INFO  L87              Difference]: Start difference. First operand 9969 states and 13856 transitions. Second operand  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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)
[2022-11-25 16:43:47,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:43:47,811 INFO  L93              Difference]: Finished difference Result 26951 states and 38550 transitions.
[2022-11-25 16:43:47,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:43:47,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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 610
[2022-11-25 16:43:47,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:43:47,851 INFO  L225             Difference]: With dead ends: 26951
[2022-11-25 16:43:47,851 INFO  L226             Difference]: Without dead ends: 18349
[2022-11-25 16:43:47,860 INFO  L412           NwaCegarLoop]: 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
[2022-11-25 16:43:47,861 INFO  L413           NwaCegarLoop]: 1330 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-11-25 16:43:47,861 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1600 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-11-25 16:43:47,881 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18349 states.
[2022-11-25 16:43:48,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18334.
[2022-11-25 16:43:48,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18334 states, 18333 states have (on average 1.2809687448862705) internal successors, (23484), 18333 states have internal predecessors, (23484), 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)
[2022-11-25 16:43:48,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18334 states to 18334 states and 23484 transitions.
[2022-11-25 16:43:48,153 INFO  L78                 Accepts]: Start accepts. Automaton has 18334 states and 23484 transitions. Word has length 610
[2022-11-25 16:43:48,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:43:48,155 INFO  L495      AbstractCegarLoop]: Abstraction has 18334 states and 23484 transitions.
[2022-11-25 16:43:48,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 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)
[2022-11-25 16:43:48,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 18334 states and 23484 transitions.
[2022-11-25 16:43:48,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 626
[2022-11-25 16:43:48,160 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:43:48,162 INFO  L195           NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:43:48,162 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-25 16:43:48,163 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:43:48,164 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:43:48,164 INFO  L85        PathProgramCache]: Analyzing trace with hash 670623072, now seen corresponding path program 1 times
[2022-11-25 16:43:48,164 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:43:48,164 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195610069]
[2022-11-25 16:43:48,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:43:48,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:43:48,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:43:49,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 166 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 16:43:49,712 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:43:49,712 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195610069]
[2022-11-25 16:43:49,712 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195610069] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:43:49,713 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:43:49,713 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-25 16:43:49,713 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644365272]
[2022-11-25 16:43:49,713 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:43:49,714 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 16:43:49,714 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:43:49,715 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 16:43:49,715 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:43:49,716 INFO  L87              Difference]: Start difference. First operand 18334 states and 23484 transitions. Second operand  has 5 states, 5 states have (on average 125.0) internal successors, (625), 4 states have internal predecessors, (625), 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)
[2022-11-25 16:44:02,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:44:02,078 INFO  L93              Difference]: Finished difference Result 42164 states and 53383 transitions.
[2022-11-25 16:44:02,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-25 16:44:02,079 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 125.0) internal successors, (625), 4 states have internal predecessors, (625), 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 625
[2022-11-25 16:44:02,080 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:44:02,123 INFO  L225             Difference]: With dead ends: 42164
[2022-11-25 16:44:02,123 INFO  L226             Difference]: Without dead ends: 25171
[2022-11-25 16:44:02,137 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:44:02,138 INFO  L413           NwaCegarLoop]: 1658 mSDtfsCounter, 2171 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 10274 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 10686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 10274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time
[2022-11-25 16:44:02,138 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2024 Invalid, 10686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 10274 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time]
[2022-11-25 16:44:02,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25171 states.
[2022-11-25 16:44:02,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25171 to 25166.
[2022-11-25 16:44:02,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25166 states, 25165 states have (on average 1.2144247963441288) internal successors, (30561), 25165 states have internal predecessors, (30561), 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)
[2022-11-25 16:44:02,504 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25166 states to 25166 states and 30561 transitions.
[2022-11-25 16:44:02,504 INFO  L78                 Accepts]: Start accepts. Automaton has 25166 states and 30561 transitions. Word has length 625
[2022-11-25 16:44:02,506 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:44:02,506 INFO  L495      AbstractCegarLoop]: Abstraction has 25166 states and 30561 transitions.
[2022-11-25 16:44:02,507 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 125.0) internal successors, (625), 4 states have internal predecessors, (625), 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)
[2022-11-25 16:44:02,507 INFO  L276                IsEmpty]: Start isEmpty. Operand 25166 states and 30561 transitions.
[2022-11-25 16:44:02,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 671
[2022-11-25 16:44:02,520 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:44:02,521 INFO  L195           NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:44:02,521 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-25 16:44:02,521 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:44:02,521 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:44:02,522 INFO  L85        PathProgramCache]: Analyzing trace with hash -365392812, now seen corresponding path program 1 times
[2022-11-25 16:44:02,522 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:44:02,522 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359002732]
[2022-11-25 16:44:02,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:02,523 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:44:02,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:04,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked.
[2022-11-25 16:44:04,149 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:44:04,149 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359002732]
[2022-11-25 16:44:04,149 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359002732] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:44:04,149 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:44:04,149 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 16:44:04,150 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472372819]
[2022-11-25 16:44:04,150 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:44:04,151 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:44:04,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:44:04,152 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:44:04,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:44:04,153 INFO  L87              Difference]: Start difference. First operand 25166 states and 30561 transitions. Second operand  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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)
[2022-11-25 16:44:12,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:44:12,374 INFO  L93              Difference]: Finished difference Result 47620 states and 60784 transitions.
[2022-11-25 16:44:12,375 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:44:12,375 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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 670
[2022-11-25 16:44:12,376 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:44:12,414 INFO  L225             Difference]: With dead ends: 47620
[2022-11-25 16:44:12,414 INFO  L226             Difference]: Without dead ends: 30653
[2022-11-25 16:44:12,430 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:44:12,431 INFO  L413           NwaCegarLoop]: 688 mSDtfsCounter, 1825 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-11-25 16:44:12,431 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1825 Valid, 772 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-11-25 16:44:12,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30653 states.
[2022-11-25 16:44:12,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30653 to 29281.
[2022-11-25 16:44:12,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29281 states, 29280 states have (on average 1.2540983606557377) internal successors, (36720), 29280 states have internal predecessors, (36720), 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)
[2022-11-25 16:44:12,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 36720 transitions.
[2022-11-25 16:44:12,870 INFO  L78                 Accepts]: Start accepts. Automaton has 29281 states and 36720 transitions. Word has length 670
[2022-11-25 16:44:12,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:44:12,871 INFO  L495      AbstractCegarLoop]: Abstraction has 29281 states and 36720 transitions.
[2022-11-25 16:44:12,872 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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)
[2022-11-25 16:44:12,872 INFO  L276                IsEmpty]: Start isEmpty. Operand 29281 states and 36720 transitions.
[2022-11-25 16:44:12,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 886
[2022-11-25 16:44:12,884 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:44:12,886 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:44:12,886 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-25 16:44:12,886 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:44:12,887 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:44:12,887 INFO  L85        PathProgramCache]: Analyzing trace with hash 917917806, now seen corresponding path program 1 times
[2022-11-25 16:44:12,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:44:12,888 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607389769]
[2022-11-25 16:44:12,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:12,888 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:44:13,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:13,835 INFO  L134       CoverageAnalysis]: Checked inductivity of 699 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked.
[2022-11-25 16:44:13,835 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:44:13,836 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607389769]
[2022-11-25 16:44:13,836 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607389769] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:44:13,836 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:44:13,836 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-25 16:44:13,837 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587033357]
[2022-11-25 16:44:13,837 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:44:13,838 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-25 16:44:13,838 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:44:13,839 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-25 16:44:13,839 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 16:44:13,839 INFO  L87              Difference]: Start difference. First operand 29281 states and 36720 transitions. Second operand  has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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)
[2022-11-25 16:44:29,562 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:44:29,562 INFO  L93              Difference]: Finished difference Result 103746 states and 131352 transitions.
[2022-11-25 16:44:29,563 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-25 16:44:29,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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 885
[2022-11-25 16:44:29,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:44:29,678 INFO  L225             Difference]: With dead ends: 103746
[2022-11-25 16:44:29,678 INFO  L226             Difference]: Without dead ends: 75832
[2022-11-25 16:44:29,709 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-25 16:44:29,709 INFO  L413           NwaCegarLoop]: 780 mSDtfsCounter, 3345 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 8847 mSolverCounterSat, 2984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 11831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2984 IncrementalHoareTripleChecker+Valid, 8847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time
[2022-11-25 16:44:29,710 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 1050 Invalid, 11831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2984 Valid, 8847 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time]
[2022-11-25 16:44:29,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75832 states.
[2022-11-25 16:44:30,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75832 to 74393.
[2022-11-25 16:44:30,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 74393 states, 74392 states have (on average 1.1997929884933864) internal successors, (89255), 74392 states have internal predecessors, (89255), 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)
[2022-11-25 16:44:30,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74393 states to 74393 states and 89255 transitions.
[2022-11-25 16:44:30,954 INFO  L78                 Accepts]: Start accepts. Automaton has 74393 states and 89255 transitions. Word has length 885
[2022-11-25 16:44:30,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:44:30,956 INFO  L495      AbstractCegarLoop]: Abstraction has 74393 states and 89255 transitions.
[2022-11-25 16:44:30,956 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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)
[2022-11-25 16:44:30,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 74393 states and 89255 transitions.
[2022-11-25 16:44:30,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 895
[2022-11-25 16:44:30,969 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:44:30,970 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:44:30,970 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-25 16:44:30,970 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:44:30,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:44:30,971 INFO  L85        PathProgramCache]: Analyzing trace with hash 1087929842, now seen corresponding path program 1 times
[2022-11-25 16:44:30,971 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:44:30,971 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616300804]
[2022-11-25 16:44:30,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:30,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:44:31,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:34,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 719 backedges. 374 proven. 313 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2022-11-25 16:44:34,755 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:44:34,755 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616300804]
[2022-11-25 16:44:34,756 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616300804] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 16:44:34,756 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109612959]
[2022-11-25 16:44:34,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:34,756 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:44:34,757 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:44:34,760 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 16:44:34,776 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-25 16:44:35,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:35,140 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 16:44:35,154 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 16:44:35,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 719 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked.
[2022-11-25 16:44:35,322 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 16:44:35,322 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109612959] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:44:35,322 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 16:44:35,323 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8
[2022-11-25 16:44:35,323 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720676941]
[2022-11-25 16:44:35,323 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:44:35,325 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:44:35,325 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:44:35,326 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:44:35,326 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-11-25 16:44:35,327 INFO  L87              Difference]: Start difference. First operand 74393 states and 89255 transitions. Second operand  has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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)
[2022-11-25 16:44:43,493 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:44:43,494 INFO  L93              Difference]: Finished difference Result 152879 states and 186659 transitions.
[2022-11-25 16:44:43,494 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:44:43,495 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 894
[2022-11-25 16:44:43,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:44:43,616 INFO  L225             Difference]: With dead ends: 152879
[2022-11-25 16:44:43,616 INFO  L226             Difference]: Without dead ends: 92145
[2022-11-25 16:44:43,639 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-11-25 16:44:43,641 INFO  L413           NwaCegarLoop]: 688 mSDtfsCounter, 1663 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4657 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 4657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2022-11-25 16:44:43,642 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 764 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 4657 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2022-11-25 16:44:43,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92145 states.
[2022-11-25 16:44:44,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92145 to 90775.
[2022-11-25 16:44:44,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90775 states, 90774 states have (on average 1.1880824905810035) internal successors, (107847), 90774 states have internal predecessors, (107847), 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)
[2022-11-25 16:44:44,773 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90775 states to 90775 states and 107847 transitions.
[2022-11-25 16:44:44,773 INFO  L78                 Accepts]: Start accepts. Automaton has 90775 states and 107847 transitions. Word has length 894
[2022-11-25 16:44:44,774 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:44:44,774 INFO  L495      AbstractCegarLoop]: Abstraction has 90775 states and 107847 transitions.
[2022-11-25 16:44:44,774 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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)
[2022-11-25 16:44:44,774 INFO  L276                IsEmpty]: Start isEmpty. Operand 90775 states and 107847 transitions.
[2022-11-25 16:44:44,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 895
[2022-11-25 16:44:44,786 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:44:44,786 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:44:44,796 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-25 16:44:44,993 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:44:44,994 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:44:44,994 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:44:44,994 INFO  L85        PathProgramCache]: Analyzing trace with hash -1231144089, now seen corresponding path program 1 times
[2022-11-25 16:44:44,995 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:44:44,995 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954413486]
[2022-11-25 16:44:44,995 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:44,995 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:44:45,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:47,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 717 backedges. 257 proven. 366 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2022-11-25 16:44:47,856 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:44:47,857 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954413486]
[2022-11-25 16:44:47,857 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954413486] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 16:44:47,857 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209866696]
[2022-11-25 16:44:47,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:44:47,857 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:44:47,858 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:44:47,860 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 16:44:47,892 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-25 16:44:48,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:44:48,218 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 16:44:48,227 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 16:44:48,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 717 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2022-11-25 16:44:48,365 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 16:44:48,365 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209866696] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:44:48,365 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 16:44:48,366 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2022-11-25 16:44:48,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139033123]
[2022-11-25 16:44:48,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:44:48,368 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:44:48,368 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:44:48,369 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:44:48,369 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:44:48,370 INFO  L87              Difference]: Start difference. First operand 90775 states and 107847 transitions. Second operand  has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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)
[2022-11-25 16:44:57,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:44:57,698 INFO  L93              Difference]: Finished difference Result 219886 states and 262083 transitions.
[2022-11-25 16:44:57,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:44:57,699 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 894
[2022-11-25 16:44:57,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:44:57,848 INFO  L225             Difference]: With dead ends: 219886
[2022-11-25 16:44:57,848 INFO  L226             Difference]: Without dead ends: 130478
[2022-11-25 16:44:57,885 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:44:57,886 INFO  L413           NwaCegarLoop]: 1300 mSDtfsCounter, 1560 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-11-25 16:44:57,886 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 1428 Invalid, 5963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-11-25 16:44:58,001 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 130478 states.
[2022-11-25 16:44:59,489 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 130478 to 129006.
[2022-11-25 16:44:59,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 129006 states, 129005 states have (on average 1.1510561606139298) internal successors, (148492), 129005 states have internal predecessors, (148492), 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)
[2022-11-25 16:45:00,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 129006 states to 129006 states and 148492 transitions.
[2022-11-25 16:45:00,021 INFO  L78                 Accepts]: Start accepts. Automaton has 129006 states and 148492 transitions. Word has length 894
[2022-11-25 16:45:00,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:45:00,022 INFO  L495      AbstractCegarLoop]: Abstraction has 129006 states and 148492 transitions.
[2022-11-25 16:45:00,022 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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)
[2022-11-25 16:45:00,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 129006 states and 148492 transitions.
[2022-11-25 16:45:00,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1011
[2022-11-25 16:45:00,038 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:45:00,038 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:45:00,046 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-11-25 16:45:00,244 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-11-25 16:45:00,245 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:45:00,245 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:45:00,246 INFO  L85        PathProgramCache]: Analyzing trace with hash -2017450166, now seen corresponding path program 1 times
[2022-11-25 16:45:00,246 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:45:00,246 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783275012]
[2022-11-25 16:45:00,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:00,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:45:00,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:01,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 1171 backedges. 614 proven. 129 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2022-11-25 16:45:01,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:45:01,616 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783275012]
[2022-11-25 16:45:01,617 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783275012] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 16:45:01,617 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614446602]
[2022-11-25 16:45:01,617 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:01,617 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:45:01,618 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:45:01,620 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 16:45:01,623 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-25 16:45:02,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:02,026 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-25 16:45:02,037 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 16:45:02,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 1171 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2022-11-25 16:45:02,672 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 16:45:02,672 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614446602] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:45:02,672 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 16:45:02,673 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2022-11-25 16:45:02,673 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560154241]
[2022-11-25 16:45:02,673 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:45:02,674 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:45:02,674 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:45:02,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:45:02,675 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-11-25 16:45:02,676 INFO  L87              Difference]: Start difference. First operand 129006 states and 148492 transitions. Second operand  has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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)
[2022-11-25 16:45:12,621 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:45:12,622 INFO  L93              Difference]: Finished difference Result 337165 states and 393118 transitions.
[2022-11-25 16:45:12,622 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:45:12,622 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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 1010
[2022-11-25 16:45:12,623 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:45:12,914 INFO  L225             Difference]: With dead ends: 337165
[2022-11-25 16:45:12,914 INFO  L226             Difference]: Without dead ends: 225912
[2022-11-25 16:45:13,225 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-11-25 16:45:13,240 INFO  L413           NwaCegarLoop]: 687 mSDtfsCounter, 2378 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 5505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2022-11-25 16:45:13,240 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 795 Invalid, 5505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2022-11-25 16:45:13,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 225912 states.
[2022-11-25 16:45:15,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 225912 to 199975.
[2022-11-25 16:45:15,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199975 states, 199974 states have (on average 1.1530548971366277) internal successors, (230581), 199974 states have internal predecessors, (230581), 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)
[2022-11-25 16:45:15,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199975 states to 199975 states and 230581 transitions.
[2022-11-25 16:45:15,906 INFO  L78                 Accepts]: Start accepts. Automaton has 199975 states and 230581 transitions. Word has length 1010
[2022-11-25 16:45:15,907 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:45:15,907 INFO  L495      AbstractCegarLoop]: Abstraction has 199975 states and 230581 transitions.
[2022-11-25 16:45:15,908 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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)
[2022-11-25 16:45:15,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 199975 states and 230581 transitions.
[2022-11-25 16:45:15,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1050
[2022-11-25 16:45:15,929 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:45:15,930 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:45:15,935 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-11-25 16:45:16,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:45:16,132 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:45:16,132 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:45:16,133 INFO  L85        PathProgramCache]: Analyzing trace with hash -1153340295, now seen corresponding path program 1 times
[2022-11-25 16:45:16,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:45:16,133 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083710935]
[2022-11-25 16:45:16,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:16,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:45:16,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:18,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 1281 backedges. 831 proven. 66 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked.
[2022-11-25 16:45:18,965 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:45:18,965 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083710935]
[2022-11-25 16:45:18,965 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083710935] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 16:45:18,965 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26003312]
[2022-11-25 16:45:18,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:18,966 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:45:18,966 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 16:45:18,967 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 16:45:18,969 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-11-25 16:45:19,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:19,362 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-25 16:45:19,372 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 16:45:19,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 1281 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2022-11-25 16:45:19,584 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 16:45:19,585 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [26003312] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:45:19,585 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-25 16:45:19,585 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2022-11-25 16:45:19,586 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375385294]
[2022-11-25 16:45:19,586 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:45:19,587 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:45:19,587 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:45:19,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:45:19,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:45:19,589 INFO  L87              Difference]: Start difference. First operand 199975 states and 230581 transitions. Second operand  has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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)
[2022-11-25 16:45:28,966 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:45:28,966 INFO  L93              Difference]: Finished difference Result 398664 states and 459936 transitions.
[2022-11-25 16:45:28,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:45:28,967 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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 1049
[2022-11-25 16:45:28,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:45:29,206 INFO  L225             Difference]: With dead ends: 398664
[2022-11-25 16:45:29,206 INFO  L226             Difference]: Without dead ends: 201421
[2022-11-25 16:45:29,648 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-25 16:45:29,649 INFO  L413           NwaCegarLoop]: 1679 mSDtfsCounter, 1382 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2022-11-25 16:45:29,650 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1841 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2022-11-25 16:45:29,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 201421 states.
[2022-11-25 16:45:31,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 201421 to 201343.
[2022-11-25 16:45:31,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 201343 states, 201342 states have (on average 1.138306960296411) internal successors, (229189), 201342 states have internal predecessors, (229189), 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)
[2022-11-25 16:45:32,224 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 201343 states to 201343 states and 229189 transitions.
[2022-11-25 16:45:32,224 INFO  L78                 Accepts]: Start accepts. Automaton has 201343 states and 229189 transitions. Word has length 1049
[2022-11-25 16:45:32,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:45:32,225 INFO  L495      AbstractCegarLoop]: Abstraction has 201343 states and 229189 transitions.
[2022-11-25 16:45:32,225 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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)
[2022-11-25 16:45:32,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 201343 states and 229189 transitions.
[2022-11-25 16:45:32,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1062
[2022-11-25 16:45:32,237 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:45:32,238 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:45:32,244 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-11-25 16:45:32,438 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa09e24-12a1-4e70-94e1-1a7f7319e8e3/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 16:45:32,439 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:45:32,439 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:45:32,439 INFO  L85        PathProgramCache]: Analyzing trace with hash 134440148, now seen corresponding path program 1 times
[2022-11-25 16:45:32,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:45:32,439 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772680487]
[2022-11-25 16:45:32,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:32,440 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:45:33,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:33,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 1305 backedges. 877 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2022-11-25 16:45:33,489 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:45:33,489 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772680487]
[2022-11-25 16:45:33,489 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772680487] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:45:33,489 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:45:33,490 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 16:45:33,490 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494927787]
[2022-11-25 16:45:33,490 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:45:33,491 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:45:33,491 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:45:33,492 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:45:33,493 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:45:33,493 INFO  L87              Difference]: Start difference. First operand 201343 states and 229189 transitions. Second operand  has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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)
[2022-11-25 16:45:42,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 16:45:42,128 INFO  L93              Difference]: Finished difference Result 408144 states and 463983 transitions.
[2022-11-25 16:45:42,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 16:45:42,128 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 1061
[2022-11-25 16:45:42,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 16:45:42,366 INFO  L225             Difference]: With dead ends: 408144
[2022-11-25 16:45:42,366 INFO  L226             Difference]: Without dead ends: 204071
[2022-11-25 16:45:42,432 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:45:42,433 INFO  L413           NwaCegarLoop]: 2867 mSDtfsCounter, 1471 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2022-11-25 16:45:42,433 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 3046 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1255 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2022-11-25 16:45:42,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204071 states.
[2022-11-25 16:45:45,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204071 to 199971.
[2022-11-25 16:45:45,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199971 states, 199970 states have (on average 1.1108316247437116) internal successors, (222133), 199970 states have internal predecessors, (222133), 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)
[2022-11-25 16:45:45,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199971 states to 199971 states and 222133 transitions.
[2022-11-25 16:45:45,481 INFO  L78                 Accepts]: Start accepts. Automaton has 199971 states and 222133 transitions. Word has length 1061
[2022-11-25 16:45:45,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 16:45:45,482 INFO  L495      AbstractCegarLoop]: Abstraction has 199971 states and 222133 transitions.
[2022-11-25 16:45:45,482 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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)
[2022-11-25 16:45:45,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 199971 states and 222133 transitions.
[2022-11-25 16:45:45,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1093
[2022-11-25 16:45:45,495 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 16:45:45,495 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 16:45:45,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-11-25 16:45:45,496 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 16:45:45,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 16:45:45,497 INFO  L85        PathProgramCache]: Analyzing trace with hash 1053549490, now seen corresponding path program 1 times
[2022-11-25 16:45:45,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 16:45:45,497 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516005770]
[2022-11-25 16:45:45,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 16:45:45,497 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 16:45:45,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 16:45:47,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 1381 backedges. 1009 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2022-11-25 16:45:47,848 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 16:45:47,848 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516005770]
[2022-11-25 16:45:47,848 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516005770] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 16:45:47,848 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 16:45:47,848 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-25 16:45:47,848 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395196739]
[2022-11-25 16:45:47,849 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 16:45:47,850 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 16:45:47,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 16:45:47,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 16:45:47,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 16:45:47,852 INFO  L87              Difference]: Start difference. First operand 199971 states and 222133 transitions. Second operand  has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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)