./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version b5237d83
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a --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 152d7fbf05854462a33897c88f7cf73fa78514058a292c6dd4eaf2d74f1b44e9
--- 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-b5237d8
[2022-11-21 17:26:58,712 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-21 17:26:58,715 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-21 17:26:58,747 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-21 17:26:58,748 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-21 17:26:58,752 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-21 17:26:58,755 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-21 17:26:58,759 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-21 17:26:58,764 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-21 17:26:58,772 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-21 17:26:58,773 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-21 17:26:58,774 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-21 17:26:58,774 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-21 17:26:58,775 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-21 17:26:58,776 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-21 17:26:58,777 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-21 17:26:58,778 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-21 17:26:58,779 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-21 17:26:58,781 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-21 17:26:58,788 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-21 17:26:58,793 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-21 17:26:58,796 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-21 17:26:58,799 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-21 17:26:58,801 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-21 17:26:58,811 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-21 17:26:58,811 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-21 17:26:58,811 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-21 17:26:58,813 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-21 17:26:58,814 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-21 17:26:58,815 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-21 17:26:58,816 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-21 17:26:58,817 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-21 17:26:58,819 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-21 17:26:58,820 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-21 17:26:58,821 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-21 17:26:58,821 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-21 17:26:58,822 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-21 17:26:58,822 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-21 17:26:58,823 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-21 17:26:58,824 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-21 17:26:58,825 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-21 17:26:58,827 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-21 17:26:58,870 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-21 17:26:58,871 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-21 17:26:58,871 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-21 17:26:58,871 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-21 17:26:58,872 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-21 17:26:58,873 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-21 17:26:58,873 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-21 17:26:58,874 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-21 17:26:58,874 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-21 17:26:58,874 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-21 17:26:58,875 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-21 17:26:58,876 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-21 17:26:58,876 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-21 17:26:58,876 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-21 17:26:58,876 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-21 17:26:58,876 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-21 17:26:58,877 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-21 17:26:58,877 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-21 17:26:58,877 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-21 17:26:58,877 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-21 17:26:58,877 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-21 17:26:58,878 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-21 17:26:58,878 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-21 17:26:58,878 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-21 17:26:58,878 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-21 17:26:58,879 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-21 17:26:58,879 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-21 17:26:58,879 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-21 17:26:58,879 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-21 17:26:58,879 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-21 17:26:58,880 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-21 17:26:58,880 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-21 17:26:58,880 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-21 17:26:58,880 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/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_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a
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 -> 152d7fbf05854462a33897c88f7cf73fa78514058a292c6dd4eaf2d74f1b44e9
[2022-11-21 17:26:59,229 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-21 17:26:59,268 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-21 17:26:59,271 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-21 17:26:59,272 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-21 17:26:59,273 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-21 17:26:59,274 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c
[2022-11-21 17:27:02,380 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-21 17:27:02,955 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-21 17:27:02,956 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/sv-benchmarks/c/eca-rers2012/Problem12_label13.c
[2022-11-21 17:27:02,986 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/data/aad9ed294/368cc7594a244044a34ff083f77dbcaa/FLAGa1a20d767
[2022-11-21 17:27:03,006 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/data/aad9ed294/368cc7594a244044a34ff083f77dbcaa
[2022-11-21 17:27:03,008 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-21 17:27:03,010 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-21 17:27:03,011 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-21 17:27:03,012 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-21 17:27:03,030 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-21 17:27:03,030 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:03" (1/1) ...
[2022-11-21 17:27:03,032 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59825025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:03, skipping insertion in model container
[2022-11-21 17:27:03,032 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:03" (1/1) ...
[2022-11-21 17:27:03,041 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-21 17:27:03,199 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-21 17:27:03,470 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_fe372bfd-d517-4a95-91d4-2fec441d4546/sv-benchmarks/c/eca-rers2012/Problem12_label13.c[3765,3778]
[2022-11-21 17:27:04,503 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-21 17:27:04,517 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-21 17:27:04,550 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_fe372bfd-d517-4a95-91d4-2fec441d4546/sv-benchmarks/c/eca-rers2012/Problem12_label13.c[3765,3778]
[2022-11-21 17:27:05,257 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-21 17:27:05,281 INFO  L208         MainTranslator]: Completed translation
[2022-11-21 17:27:05,282 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05 WrapperNode
[2022-11-21 17:27:05,282 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-21 17:27:05,283 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-21 17:27:05,284 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-21 17:27:05,284 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-21 17:27:05,292 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,360 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,741 INFO  L138                Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757
[2022-11-21 17:27:05,741 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-21 17:27:05,742 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-21 17:27:05,742 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-21 17:27:05,742 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-21 17:27:05,752 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,752 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,862 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,862 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:05,998 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:06,033 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:06,051 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:06,067 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:06,115 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-21 17:27:06,117 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-21 17:27:06,118 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-21 17:27:06,119 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-21 17:27:06,120 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (1/1) ...
[2022-11-21 17:27:06,126 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-21 17:27:06,139 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:27:06,157 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-21 17:27:06,191 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-21 17:27:06,208 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-21 17:27:06,208 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-21 17:27:06,208 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-21 17:27:06,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-21 17:27:06,323 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-21 17:27:06,325 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-21 17:27:11,729 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-21 17:27:11,744 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-21 17:27:11,744 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-21 17:27:11,748 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:11 BoogieIcfgContainer
[2022-11-21 17:27:11,748 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-21 17:27:11,750 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-21 17:27:11,750 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-21 17:27:11,753 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-21 17:27:11,754 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:27:03" (1/3) ...
[2022-11-21 17:27:11,755 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46afeb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:11, skipping insertion in model container
[2022-11-21 17:27:11,755 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:05" (2/3) ...
[2022-11-21 17:27:11,755 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46afeb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:11, skipping insertion in model container
[2022-11-21 17:27:11,755 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:11" (3/3) ...
[2022-11-21 17:27:11,757 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem12_label13.c
[2022-11-21 17:27:11,777 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-21 17:27:11,777 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-21 17:27:11,848 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-21 17:27:11,855 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;@102f6156, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-21 17:27:11,855 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-21 17:27:11,864 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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)
[2022-11-21 17:27:11,871 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-11-21 17:27:11,872 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:11,873 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]
[2022-11-21 17:27:11,873 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:11,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:11,879 INFO  L85        PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times
[2022-11-21 17:27:11,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:11,890 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367047198]
[2022-11-21 17:27:11,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:11,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:12,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:12,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:27:12,230 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:12,231 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367047198]
[2022-11-21 17:27:12,231 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367047198] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:12,232 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:12,232 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:27:12,234 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146430475]
[2022-11-21 17:27:12,235 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:12,240 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:12,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:12,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:12,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:27:12,289 INFO  L87              Difference]: Start difference. First operand  has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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)
[2022-11-21 17:27:17,478 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:17,478 INFO  L93              Difference]: Finished difference Result 2388 states and 4629 transitions.
[2022-11-21 17:27:17,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:17,490 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28
[2022-11-21 17:27:17,491 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:17,525 INFO  L225             Difference]: With dead ends: 2388
[2022-11-21 17:27:17,531 INFO  L226             Difference]: Without dead ends: 1506
[2022-11-21 17:27:17,537 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
[2022-11-21 17:27:17,545 INFO  L413           NwaCegarLoop]: 92 mSDtfsCounter, 831 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:17,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-11-21 17:27:17,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1506 states.
[2022-11-21 17:27:17,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506.
[2022-11-21 17:27:17,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 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)
[2022-11-21 17:27:17,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions.
[2022-11-21 17:27:17,658 INFO  L78                 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 28
[2022-11-21 17:27:17,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:17,658 INFO  L495      AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions.
[2022-11-21 17:27:17,659 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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)
[2022-11-21 17:27:17,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions.
[2022-11-21 17:27:17,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-11-21 17:27:17,662 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:17,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:27:17,663 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-21 17:27:17,663 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:17,664 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:17,664 INFO  L85        PathProgramCache]: Analyzing trace with hash 574416204, now seen corresponding path program 1 times
[2022-11-21 17:27:17,664 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:17,664 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899747001]
[2022-11-21 17:27:17,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:17,665 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:17,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:17,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:27:17,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:17,910 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899747001]
[2022-11-21 17:27:17,910 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899747001] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:17,910 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:17,911 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:27:17,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536397776]
[2022-11-21 17:27:17,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:17,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:17,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:17,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:17,916 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:27:17,916 INFO  L87              Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand  has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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)
[2022-11-21 17:27:22,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:22,447 INFO  L93              Difference]: Finished difference Result 4514 states and 8438 transitions.
[2022-11-21 17:27:22,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:22,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 101
[2022-11-21 17:27:22,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:22,460 INFO  L225             Difference]: With dead ends: 4514
[2022-11-21 17:27:22,461 INFO  L226             Difference]: Without dead ends: 3010
[2022-11-21 17:27:22,463 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
[2022-11-21 17:27:22,465 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:22,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-11-21 17:27:22,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3010 states.
[2022-11-21 17:27:22,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008.
[2022-11-21 17:27:22,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 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)
[2022-11-21 17:27:22,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions.
[2022-11-21 17:27:22,551 INFO  L78                 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 101
[2022-11-21 17:27:22,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:22,552 INFO  L495      AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions.
[2022-11-21 17:27:22,552 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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)
[2022-11-21 17:27:22,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions.
[2022-11-21 17:27:22,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2022-11-21 17:27:22,554 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:22,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:27:22,555 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-21 17:27:22,555 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:22,556 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:22,556 INFO  L85        PathProgramCache]: Analyzing trace with hash 1742777415, now seen corresponding path program 1 times
[2022-11-21 17:27:22,556 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:22,556 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128869405]
[2022-11-21 17:27:22,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:22,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:22,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:22,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:27:22,907 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:22,908 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128869405]
[2022-11-21 17:27:22,908 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128869405] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:22,910 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:22,910 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:27:22,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125903616]
[2022-11-21 17:27:22,911 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:22,911 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-21 17:27:22,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:22,912 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-21 17:27:22,913 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-21 17:27:22,913 INFO  L87              Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand  has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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)
[2022-11-21 17:27:29,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:29,923 INFO  L93              Difference]: Finished difference Result 8267 states and 13429 transitions.
[2022-11-21 17:27:29,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-21 17:27:29,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 114
[2022-11-21 17:27:29,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:29,943 INFO  L225             Difference]: With dead ends: 8267
[2022-11-21 17:27:29,943 INFO  L226             Difference]: Without dead ends: 5261
[2022-11-21 17:27:29,947 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
[2022-11-21 17:27:29,948 INFO  L413           NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:29,949 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2022-11-21 17:27:29,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5261 states.
[2022-11-21 17:27:30,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261.
[2022-11-21 17:27:30,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 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)
[2022-11-21 17:27:30,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions.
[2022-11-21 17:27:30,061 INFO  L78                 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 114
[2022-11-21 17:27:30,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:30,062 INFO  L495      AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions.
[2022-11-21 17:27:30,062 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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)
[2022-11-21 17:27:30,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions.
[2022-11-21 17:27:30,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2022-11-21 17:27:30,077 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:30,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:27:30,077 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-21 17:27:30,078 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:30,078 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:30,082 INFO  L85        PathProgramCache]: Analyzing trace with hash 1340876962, now seen corresponding path program 1 times
[2022-11-21 17:27:30,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:30,083 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458691387]
[2022-11-21 17:27:30,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:30,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:30,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:30,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-11-21 17:27:30,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:30,623 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458691387]
[2022-11-21 17:27:30,623 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458691387] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:27:30,623 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178578758]
[2022-11-21 17:27:30,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:30,624 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:27:30,624 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:27:30,631 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:27:30,660 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-21 17:27:30,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:30,750 INFO  L263         TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-21 17:27:30,758 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:27:31,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2022-11-21 17:27:31,099 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-21 17:27:31,100 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178578758] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:31,100 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-21 17:27:31,100 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2022-11-21 17:27:31,101 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798129432]
[2022-11-21 17:27:31,101 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:31,102 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:31,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:31,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:31,108 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-21 17:27:31,108 INFO  L87              Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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)
[2022-11-21 17:27:35,323 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:35,323 INFO  L93              Difference]: Finished difference Result 14275 states and 22313 transitions.
[2022-11-21 17:27:35,323 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:35,324 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 169
[2022-11-21 17:27:35,328 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:35,361 INFO  L225             Difference]: With dead ends: 14275
[2022-11-21 17:27:35,362 INFO  L226             Difference]: Without dead ends: 9767
[2022-11-21 17:27:35,368 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-21 17:27:35,376 INFO  L413           NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:35,378 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2022-11-21 17:27:35,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9767 states.
[2022-11-21 17:27:35,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767.
[2022-11-21 17:27:35,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 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)
[2022-11-21 17:27:35,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions.
[2022-11-21 17:27:35,588 INFO  L78                 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 169
[2022-11-21 17:27:35,590 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:35,590 INFO  L495      AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions.
[2022-11-21 17:27:35,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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)
[2022-11-21 17:27:35,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions.
[2022-11-21 17:27:35,593 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2022-11-21 17:27:35,593 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:35,594 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-21 17:27:35,613 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-21 17:27:35,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:27:35,801 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:35,802 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:35,802 INFO  L85        PathProgramCache]: Analyzing trace with hash 355454358, now seen corresponding path program 1 times
[2022-11-21 17:27:35,802 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:35,802 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116641971]
[2022-11-21 17:27:35,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:35,803 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:35,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:36,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:27:36,297 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:36,298 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116641971]
[2022-11-21 17:27:36,298 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116641971] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:36,298 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:36,298 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:27:36,299 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024786343]
[2022-11-21 17:27:36,299 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:36,300 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-21 17:27:36,300 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:36,300 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-21 17:27:36,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-21 17:27:36,303 INFO  L87              Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand  has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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)
[2022-11-21 17:27:40,917 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:40,917 INFO  L93              Difference]: Finished difference Result 23326 states and 32178 transitions.
[2022-11-21 17:27:40,923 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-21 17:27:40,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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 185
[2022-11-21 17:27:40,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:40,965 INFO  L225             Difference]: With dead ends: 23326
[2022-11-21 17:27:40,966 INFO  L226             Difference]: Without dead ends: 14275
[2022-11-21 17:27:40,977 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
[2022-11-21 17:27:40,978 INFO  L413           NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:40,978 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2022-11-21 17:27:40,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14275 states.
[2022-11-21 17:27:41,288 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14273.
[2022-11-21 17:27:41,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14273 states, 14272 states have (on average 1.2780269058295963) internal successors, (18240), 14272 states have internal predecessors, (18240), 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)
[2022-11-21 17:27:41,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18240 transitions.
[2022-11-21 17:27:41,351 INFO  L78                 Accepts]: Start accepts. Automaton has 14273 states and 18240 transitions. Word has length 185
[2022-11-21 17:27:41,352 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:41,352 INFO  L495      AbstractCegarLoop]: Abstraction has 14273 states and 18240 transitions.
[2022-11-21 17:27:41,353 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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)
[2022-11-21 17:27:41,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 14273 states and 18240 transitions.
[2022-11-21 17:27:41,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 260
[2022-11-21 17:27:41,357 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:41,358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-21 17:27:41,358 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-21 17:27:41,358 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:41,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:41,360 INFO  L85        PathProgramCache]: Analyzing trace with hash 875379101, now seen corresponding path program 1 times
[2022-11-21 17:27:41,360 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:41,360 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408423795]
[2022-11-21 17:27:41,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:41,361 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:41,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:41,652 INFO  L134       CoverageAnalysis]: Checked inductivity of 136 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2022-11-21 17:27:41,652 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:41,653 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408423795]
[2022-11-21 17:27:41,653 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408423795] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:41,653 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:41,653 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:27:41,653 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983518131]
[2022-11-21 17:27:41,653 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:41,655 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:41,655 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:41,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:41,655 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:27:41,656 INFO  L87              Difference]: Start difference. First operand 14273 states and 18240 transitions. Second operand  has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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)
[2022-11-21 17:27:45,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:45,699 INFO  L93              Difference]: Finished difference Result 34552 states and 45269 transitions.
[2022-11-21 17:27:45,699 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:45,700 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 259
[2022-11-21 17:27:45,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:45,739 INFO  L225             Difference]: With dead ends: 34552
[2022-11-21 17:27:45,739 INFO  L226             Difference]: Without dead ends: 21032
[2022-11-21 17:27:45,750 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
[2022-11-21 17:27:45,751 INFO  L413           NwaCegarLoop]: 1301 mSDtfsCounter, 773 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:45,751 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1309 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-11-21 17:27:45,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21032 states.
[2022-11-21 17:27:45,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 20281.
[2022-11-21 17:27:46,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20281 states, 20280 states have (on average 1.2444773175542407) internal successors, (25238), 20280 states have internal predecessors, (25238), 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)
[2022-11-21 17:27:46,041 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20281 states to 20281 states and 25238 transitions.
[2022-11-21 17:27:46,041 INFO  L78                 Accepts]: Start accepts. Automaton has 20281 states and 25238 transitions. Word has length 259
[2022-11-21 17:27:46,042 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:46,042 INFO  L495      AbstractCegarLoop]: Abstraction has 20281 states and 25238 transitions.
[2022-11-21 17:27:46,042 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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)
[2022-11-21 17:27:46,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 20281 states and 25238 transitions.
[2022-11-21 17:27:46,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 269
[2022-11-21 17:27:46,047 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:46,047 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-21 17:27:46,047 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-21 17:27:46,047 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:46,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:46,048 INFO  L85        PathProgramCache]: Analyzing trace with hash 2101162795, now seen corresponding path program 1 times
[2022-11-21 17:27:46,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:46,048 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126473844]
[2022-11-21 17:27:46,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:46,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:46,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:46,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2022-11-21 17:27:46,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:46,329 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126473844]
[2022-11-21 17:27:46,329 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126473844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:46,330 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:46,330 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:27:46,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288229826]
[2022-11-21 17:27:46,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:46,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:46,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:46,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:46,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:27:46,332 INFO  L87              Difference]: Start difference. First operand 20281 states and 25238 transitions. Second operand  has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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)
[2022-11-21 17:27:50,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:50,361 INFO  L93              Difference]: Finished difference Result 56331 states and 70972 transitions.
[2022-11-21 17:27:50,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:50,361 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 268
[2022-11-21 17:27:50,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:50,428 INFO  L225             Difference]: With dead ends: 56331
[2022-11-21 17:27:50,428 INFO  L226             Difference]: Without dead ends: 36803
[2022-11-21 17:27:50,448 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
[2022-11-21 17:27:50,449 INFO  L413           NwaCegarLoop]: 1290 mSDtfsCounter, 736 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:50,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1298 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-11-21 17:27:50,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36803 states.
[2022-11-21 17:27:50,859 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36052.
[2022-11-21 17:27:50,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36052 states, 36051 states have (on average 1.175390419128457) internal successors, (42374), 36051 states have internal predecessors, (42374), 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)
[2022-11-21 17:27:51,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 42374 transitions.
[2022-11-21 17:27:51,155 INFO  L78                 Accepts]: Start accepts. Automaton has 36052 states and 42374 transitions. Word has length 268
[2022-11-21 17:27:51,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:51,156 INFO  L495      AbstractCegarLoop]: Abstraction has 36052 states and 42374 transitions.
[2022-11-21 17:27:51,156 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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)
[2022-11-21 17:27:51,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 36052 states and 42374 transitions.
[2022-11-21 17:27:51,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 318
[2022-11-21 17:27:51,174 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:51,174 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-11-21 17:27:51,174 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-21 17:27:51,175 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:51,175 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:51,179 INFO  L85        PathProgramCache]: Analyzing trace with hash -700037012, now seen corresponding path program 1 times
[2022-11-21 17:27:51,179 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:51,180 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233696444]
[2022-11-21 17:27:51,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:51,180 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:51,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:51,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2022-11-21 17:27:51,675 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:51,675 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233696444]
[2022-11-21 17:27:51,675 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233696444] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:51,675 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:27:51,676 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:27:51,676 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155471570]
[2022-11-21 17:27:51,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:51,676 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:51,677 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:51,677 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:51,677 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:27:51,678 INFO  L87              Difference]: Start difference. First operand 36052 states and 42374 transitions. Second operand  has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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)
[2022-11-21 17:27:55,632 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:27:55,632 INFO  L93              Difference]: Finished difference Result 87122 states and 104494 transitions.
[2022-11-21 17:27:55,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:27:55,633 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 317
[2022-11-21 17:27:55,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:27:55,718 INFO  L225             Difference]: With dead ends: 87122
[2022-11-21 17:27:55,718 INFO  L226             Difference]: Without dead ends: 51823
[2022-11-21 17:27:55,741 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
[2022-11-21 17:27:55,741 INFO  L413           NwaCegarLoop]: 428 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-11-21 17:27:55,742 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 434 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-11-21 17:27:55,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51823 states.
[2022-11-21 17:27:56,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 46566.
[2022-11-21 17:27:56,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46566 states, 46565 states have (on average 1.1605712444969398) internal successors, (54042), 46565 states have internal predecessors, (54042), 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)
[2022-11-21 17:27:56,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 54042 transitions.
[2022-11-21 17:27:56,619 INFO  L78                 Accepts]: Start accepts. Automaton has 46566 states and 54042 transitions. Word has length 317
[2022-11-21 17:27:56,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:27:56,620 INFO  L495      AbstractCegarLoop]: Abstraction has 46566 states and 54042 transitions.
[2022-11-21 17:27:56,620 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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)
[2022-11-21 17:27:56,620 INFO  L276                IsEmpty]: Start isEmpty. Operand 46566 states and 54042 transitions.
[2022-11-21 17:27:56,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 379
[2022-11-21 17:27:56,630 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:27:56,630 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:27:56,630 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-21 17:27:56,631 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:27:56,631 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:27:56,631 INFO  L85        PathProgramCache]: Analyzing trace with hash 1439165288, now seen corresponding path program 1 times
[2022-11-21 17:27:56,631 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:27:56,632 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124071617]
[2022-11-21 17:27:56,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:56,632 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:27:56,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:57,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 365 backedges. 52 proven. 228 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2022-11-21 17:27:57,851 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:27:57,851 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124071617]
[2022-11-21 17:27:57,852 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124071617] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:27:57,852 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619969332]
[2022-11-21 17:27:57,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:27:57,852 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:27:57,853 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:27:57,854 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:27:57,860 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-21 17:27:58,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:27:58,061 INFO  L263         TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-21 17:27:58,146 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:27:58,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 365 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2022-11-21 17:27:58,220 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-21 17:27:58,220 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [619969332] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:27:58,220 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-21 17:27:58,220 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2022-11-21 17:27:58,220 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174036363]
[2022-11-21 17:27:58,221 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:27:58,221 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:27:58,221 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:27:58,222 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:27:58,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-21 17:27:58,223 INFO  L87              Difference]: Start difference. First operand 46566 states and 54042 transitions. Second operand  has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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)
[2022-11-21 17:28:02,010 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:02,011 INFO  L93              Difference]: Finished difference Result 92379 states and 107326 transitions.
[2022-11-21 17:28:02,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:02,012 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 378
[2022-11-21 17:28:02,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:02,064 INFO  L225             Difference]: With dead ends: 92379
[2022-11-21 17:28:02,064 INFO  L226             Difference]: Without dead ends: 46566
[2022-11-21 17:28:02,084 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-21 17:28:02,085 INFO  L413           NwaCegarLoop]: 1180 mSDtfsCounter, 778 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:02,086 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1188 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-11-21 17:28:02,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46566 states.
[2022-11-21 17:28:02,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 42060.
[2022-11-21 17:28:02,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42060 states, 42059 states have (on average 1.1045911695475403) internal successors, (46458), 42059 states have internal predecessors, (46458), 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)
[2022-11-21 17:28:02,738 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42060 states to 42060 states and 46458 transitions.
[2022-11-21 17:28:02,738 INFO  L78                 Accepts]: Start accepts. Automaton has 42060 states and 46458 transitions. Word has length 378
[2022-11-21 17:28:02,739 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:02,739 INFO  L495      AbstractCegarLoop]: Abstraction has 42060 states and 46458 transitions.
[2022-11-21 17:28:02,740 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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)
[2022-11-21 17:28:02,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 42060 states and 46458 transitions.
[2022-11-21 17:28:02,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 417
[2022-11-21 17:28:02,753 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:02,755 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:02,768 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-21 17:28:02,963 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2022-11-21 17:28:02,963 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:02,964 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:02,964 INFO  L85        PathProgramCache]: Analyzing trace with hash 1199580277, now seen corresponding path program 1 times
[2022-11-21 17:28:02,965 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:02,965 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86334791]
[2022-11-21 17:28:02,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:02,965 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:03,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:03,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 414 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2022-11-21 17:28:03,341 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:03,341 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86334791]
[2022-11-21 17:28:03,341 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86334791] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:03,342 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:03,342 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:03,342 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274351943]
[2022-11-21 17:28:03,342 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:03,343 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:03,343 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:03,344 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:03,344 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:03,344 INFO  L87              Difference]: Start difference. First operand 42060 states and 46458 transitions. Second operand  has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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)
[2022-11-21 17:28:07,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:07,725 INFO  L93              Difference]: Finished difference Result 85620 states and 94491 transitions.
[2022-11-21 17:28:07,726 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:07,726 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 416
[2022-11-21 17:28:07,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:07,764 INFO  L225             Difference]: With dead ends: 85620
[2022-11-21 17:28:07,764 INFO  L226             Difference]: Without dead ends: 44313
[2022-11-21 17:28:07,781 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
[2022-11-21 17:28:07,782 INFO  L413           NwaCegarLoop]: 999 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:07,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1006 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-11-21 17:28:07,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44313 states.
[2022-11-21 17:28:08,150 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44313 to 42060.
[2022-11-21 17:28:08,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42060 states, 42059 states have (on average 1.0845003447537982) internal successors, (45613), 42059 states have internal predecessors, (45613), 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)
[2022-11-21 17:28:08,401 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42060 states to 42060 states and 45613 transitions.
[2022-11-21 17:28:08,401 INFO  L78                 Accepts]: Start accepts. Automaton has 42060 states and 45613 transitions. Word has length 416
[2022-11-21 17:28:08,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:08,416 INFO  L495      AbstractCegarLoop]: Abstraction has 42060 states and 45613 transitions.
[2022-11-21 17:28:08,416 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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)
[2022-11-21 17:28:08,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 42060 states and 45613 transitions.
[2022-11-21 17:28:08,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 431
[2022-11-21 17:28:08,446 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:08,446 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:08,446 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-21 17:28:08,447 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:08,447 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:08,447 INFO  L85        PathProgramCache]: Analyzing trace with hash 1965759442, now seen corresponding path program 1 times
[2022-11-21 17:28:08,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:08,449 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958022404]
[2022-11-21 17:28:08,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:08,449 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:08,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:08,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 442 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2022-11-21 17:28:08,997 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:08,998 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958022404]
[2022-11-21 17:28:08,998 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958022404] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:08,998 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:08,998 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:08,998 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402865672]
[2022-11-21 17:28:08,998 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:08,999 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:08,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:09,000 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:09,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:09,001 INFO  L87              Difference]: Start difference. First operand 42060 states and 45613 transitions. Second operand  has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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)
[2022-11-21 17:28:13,440 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:13,440 INFO  L93              Difference]: Finished difference Result 90877 states and 98448 transitions.
[2022-11-21 17:28:13,441 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:13,441 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 430
[2022-11-21 17:28:13,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:13,499 INFO  L225             Difference]: With dead ends: 90877
[2022-11-21 17:28:13,500 INFO  L226             Difference]: Without dead ends: 49570
[2022-11-21 17:28:13,528 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
[2022-11-21 17:28:13,529 INFO  L413           NwaCegarLoop]: 1218 mSDtfsCounter, 655 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:13,530 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1225 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-11-21 17:28:13,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49570 states.
[2022-11-21 17:28:14,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 47317.
[2022-11-21 17:28:14,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47317 states, 47316 states have (on average 1.0783033223433933) internal successors, (51021), 47316 states have internal predecessors, (51021), 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)
[2022-11-21 17:28:14,172 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 51021 transitions.
[2022-11-21 17:28:14,173 INFO  L78                 Accepts]: Start accepts. Automaton has 47317 states and 51021 transitions. Word has length 430
[2022-11-21 17:28:14,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:14,288 INFO  L495      AbstractCegarLoop]: Abstraction has 47317 states and 51021 transitions.
[2022-11-21 17:28:14,288 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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)
[2022-11-21 17:28:14,288 INFO  L276                IsEmpty]: Start isEmpty. Operand 47317 states and 51021 transitions.
[2022-11-21 17:28:14,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 435
[2022-11-21 17:28:14,295 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:14,296 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:14,296 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-21 17:28:14,296 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:14,296 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:14,296 INFO  L85        PathProgramCache]: Analyzing trace with hash -1910124132, now seen corresponding path program 1 times
[2022-11-21 17:28:14,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:14,297 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108582860]
[2022-11-21 17:28:14,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:14,297 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:14,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:15,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 446 backedges. 118 proven. 257 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2022-11-21 17:28:15,171 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:15,171 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108582860]
[2022-11-21 17:28:15,171 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108582860] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:28:15,171 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787887963]
[2022-11-21 17:28:15,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:15,172 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:28:15,172 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:28:15,176 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:28:15,184 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-21 17:28:15,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:15,386 INFO  L263         TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-21 17:28:15,394 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:28:15,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 446 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2022-11-21 17:28:15,644 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-21 17:28:15,644 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [787887963] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:15,644 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-21 17:28:15,645 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2022-11-21 17:28:15,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416088258]
[2022-11-21 17:28:15,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:15,646 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:15,646 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:15,647 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:15,647 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-21 17:28:15,647 INFO  L87              Difference]: Start difference. First operand 47317 states and 51021 transitions. Second operand  has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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)
[2022-11-21 17:28:20,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:20,388 INFO  L93              Difference]: Finished difference Result 126925 states and 137528 transitions.
[2022-11-21 17:28:20,388 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:20,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 434
[2022-11-21 17:28:20,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:20,469 INFO  L225             Difference]: With dead ends: 126925
[2022-11-21 17:28:20,469 INFO  L226             Difference]: Without dead ends: 80361
[2022-11-21 17:28:20,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-21 17:28:20,496 INFO  L413           NwaCegarLoop]: 1314 mSDtfsCounter, 611 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:20,497 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1322 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-11-21 17:28:20,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80361 states.
[2022-11-21 17:28:21,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80361 to 69847.
[2022-11-21 17:28:21,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69847 states, 69846 states have (on average 1.066345961114452) internal successors, (74480), 69846 states have internal predecessors, (74480), 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)
[2022-11-21 17:28:21,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69847 states to 69847 states and 74480 transitions.
[2022-11-21 17:28:21,414 INFO  L78                 Accepts]: Start accepts. Automaton has 69847 states and 74480 transitions. Word has length 434
[2022-11-21 17:28:21,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:21,415 INFO  L495      AbstractCegarLoop]: Abstraction has 69847 states and 74480 transitions.
[2022-11-21 17:28:21,415 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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)
[2022-11-21 17:28:21,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 69847 states and 74480 transitions.
[2022-11-21 17:28:21,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 503
[2022-11-21 17:28:21,426 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:21,427 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, 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-11-21 17:28:21,439 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-21 17:28:21,638 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe372bfd-d517-4a95-91d4-2fec441d4546/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2022-11-21 17:28:21,638 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:21,639 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:21,639 INFO  L85        PathProgramCache]: Analyzing trace with hash -1355703506, now seen corresponding path program 1 times
[2022-11-21 17:28:21,639 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:21,639 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376649317]
[2022-11-21 17:28:21,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:21,639 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:21,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:22,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 739 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked.
[2022-11-21 17:28:22,262 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:22,262 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376649317]
[2022-11-21 17:28:22,262 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376649317] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:22,262 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:22,263 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:22,265 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119463071]
[2022-11-21 17:28:22,265 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:22,266 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:22,266 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:22,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:22,267 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:22,267 INFO  L87              Difference]: Start difference. First operand 69847 states and 74480 transitions. Second operand  has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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)
[2022-11-21 17:28:25,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:25,983 INFO  L93              Difference]: Finished difference Result 161471 states and 172772 transitions.
[2022-11-21 17:28:25,983 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:25,984 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 502
[2022-11-21 17:28:25,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:26,082 INFO  L225             Difference]: With dead ends: 161471
[2022-11-21 17:28:26,083 INFO  L226             Difference]: Without dead ends: 92377
[2022-11-21 17:28:26,111 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
[2022-11-21 17:28:26,112 INFO  L413           NwaCegarLoop]: 1270 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:26,113 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1278 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-11-21 17:28:26,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92377 states.
[2022-11-21 17:28:27,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92377 to 90124.
[2022-11-21 17:28:27,210 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90124 states, 90123 states have (on average 1.0626920985763901) internal successors, (95773), 90123 states have internal predecessors, (95773), 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)
[2022-11-21 17:28:27,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90124 states to 90124 states and 95773 transitions.
[2022-11-21 17:28:27,297 INFO  L78                 Accepts]: Start accepts. Automaton has 90124 states and 95773 transitions. Word has length 502
[2022-11-21 17:28:27,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:27,298 INFO  L495      AbstractCegarLoop]: Abstraction has 90124 states and 95773 transitions.
[2022-11-21 17:28:27,298 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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)
[2022-11-21 17:28:27,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 90124 states and 95773 transitions.
[2022-11-21 17:28:27,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 520
[2022-11-21 17:28:27,307 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:27,309 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:27,309 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-11-21 17:28:27,310 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:27,310 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:27,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 1778876796, now seen corresponding path program 1 times
[2022-11-21 17:28:27,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:27,311 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346763485]
[2022-11-21 17:28:27,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:27,311 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:27,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:27,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 686 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked.
[2022-11-21 17:28:27,941 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:27,941 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346763485]
[2022-11-21 17:28:27,941 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346763485] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:27,941 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:27,942 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:27,942 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390024825]
[2022-11-21 17:28:27,942 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:27,943 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:27,943 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:27,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:27,944 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:27,944 INFO  L87              Difference]: Start difference. First operand 90124 states and 95773 transitions. Second operand  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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)
[2022-11-21 17:28:32,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:32,153 INFO  L93              Difference]: Finished difference Result 195266 states and 207937 transitions.
[2022-11-21 17:28:32,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:32,153 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 519
[2022-11-21 17:28:32,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:32,282 INFO  L225             Difference]: With dead ends: 195266
[2022-11-21 17:28:32,282 INFO  L226             Difference]: Without dead ends: 105895
[2022-11-21 17:28:32,328 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
[2022-11-21 17:28:32,329 INFO  L413           NwaCegarLoop]: 1109 mSDtfsCounter, 846 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:32,329 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1117 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-11-21 17:28:32,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105895 states.
[2022-11-21 17:28:33,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 104393.
[2022-11-21 17:28:33,615 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104393 states, 104392 states have (on average 1.0607230439114108) internal successors, (110731), 104392 states have internal predecessors, (110731), 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)
[2022-11-21 17:28:33,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104393 states to 104393 states and 110731 transitions.
[2022-11-21 17:28:33,729 INFO  L78                 Accepts]: Start accepts. Automaton has 104393 states and 110731 transitions. Word has length 519
[2022-11-21 17:28:33,729 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:33,729 INFO  L495      AbstractCegarLoop]: Abstraction has 104393 states and 110731 transitions.
[2022-11-21 17:28:33,729 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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)
[2022-11-21 17:28:33,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 104393 states and 110731 transitions.
[2022-11-21 17:28:33,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 675
[2022-11-21 17:28:33,745 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:33,745 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, 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, 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, 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, 2, 2, 2, 2, 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]
[2022-11-21 17:28:33,745 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-11-21 17:28:33,745 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:33,746 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:33,746 INFO  L85        PathProgramCache]: Analyzing trace with hash 1593961, now seen corresponding path program 1 times
[2022-11-21 17:28:33,746 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:33,746 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826973956]
[2022-11-21 17:28:33,747 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:33,747 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:34,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:36,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 914 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2022-11-21 17:28:36,668 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:36,668 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826973956]
[2022-11-21 17:28:36,668 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826973956] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:36,668 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:36,669 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-21 17:28:36,669 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823738940]
[2022-11-21 17:28:36,669 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:36,670 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-11-21 17:28:36,670 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:36,670 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-11-21 17:28:36,671 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-11-21 17:28:36,671 INFO  L87              Difference]: Start difference. First operand 104393 states and 110731 transitions. Second operand  has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 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)
[2022-11-21 17:28:44,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:44,692 INFO  L93              Difference]: Finished difference Result 222564 states and 235979 transitions.
[2022-11-21 17:28:44,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-11-21 17:28:44,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 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 674
[2022-11-21 17:28:44,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:44,812 INFO  L225             Difference]: With dead ends: 222564
[2022-11-21 17:28:44,812 INFO  L226             Difference]: Without dead ends: 118924
[2022-11-21 17:28:44,837 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2022-11-21 17:28:44,838 INFO  L413           NwaCegarLoop]: 315 mSDtfsCounter, 3471 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6545 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 7462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 6545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:44,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 540 Invalid, 7462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 6545 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2022-11-21 17:28:44,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118924 states.
[2022-11-21 17:28:46,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118924 to 105895.
[2022-11-21 17:28:46,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 105895 states, 105894 states have (on average 1.0600317298430506) internal successors, (112251), 105894 states have internal predecessors, (112251), 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)
[2022-11-21 17:28:46,565 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 112251 transitions.
[2022-11-21 17:28:46,579 INFO  L78                 Accepts]: Start accepts. Automaton has 105895 states and 112251 transitions. Word has length 674
[2022-11-21 17:28:46,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:46,580 INFO  L495      AbstractCegarLoop]: Abstraction has 105895 states and 112251 transitions.
[2022-11-21 17:28:46,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 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)
[2022-11-21 17:28:46,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 105895 states and 112251 transitions.
[2022-11-21 17:28:46,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 698
[2022-11-21 17:28:46,602 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:46,603 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:46,603 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-11-21 17:28:46,603 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:46,604 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:46,604 INFO  L85        PathProgramCache]: Analyzing trace with hash 876374999, now seen corresponding path program 1 times
[2022-11-21 17:28:46,604 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:46,604 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920796354]
[2022-11-21 17:28:46,604 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:46,605 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:46,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:48,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 984 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked.
[2022-11-21 17:28:48,275 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:48,275 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920796354]
[2022-11-21 17:28:48,275 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920796354] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:48,275 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:48,276 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:48,276 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139768476]
[2022-11-21 17:28:48,276 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:48,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:48,278 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:48,278 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:48,278 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:48,279 INFO  L87              Difference]: Start difference. First operand 105895 states and 112251 transitions. Second operand  has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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)
[2022-11-21 17:28:52,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:28:52,418 INFO  L93              Difference]: Finished difference Result 221551 states and 235025 transitions.
[2022-11-21 17:28:52,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:28:52,419 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 697
[2022-11-21 17:28:52,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:28:52,548 INFO  L225             Difference]: With dead ends: 221551
[2022-11-21 17:28:52,549 INFO  L226             Difference]: Without dead ends: 116409
[2022-11-21 17:28:52,590 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
[2022-11-21 17:28:52,591 INFO  L413           NwaCegarLoop]: 1354 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-11-21 17:28:52,591 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1362 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-11-21 17:28:52,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116409 states.
[2022-11-21 17:28:54,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 115658.
[2022-11-21 17:28:54,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115658 states, 115657 states have (on average 1.0591663280216501) internal successors, (122500), 115657 states have internal predecessors, (122500), 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)
[2022-11-21 17:28:54,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122500 transitions.
[2022-11-21 17:28:54,292 INFO  L78                 Accepts]: Start accepts. Automaton has 115658 states and 122500 transitions. Word has length 697
[2022-11-21 17:28:54,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:28:54,293 INFO  L495      AbstractCegarLoop]: Abstraction has 115658 states and 122500 transitions.
[2022-11-21 17:28:54,293 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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)
[2022-11-21 17:28:54,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 115658 states and 122500 transitions.
[2022-11-21 17:28:54,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 731
[2022-11-21 17:28:54,311 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:28:54,311 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:28:54,311 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-11-21 17:28:54,311 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:28:54,312 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:28:54,312 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568677755, now seen corresponding path program 1 times
[2022-11-21 17:28:54,312 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:28:54,312 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659228978]
[2022-11-21 17:28:54,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:28:54,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:28:54,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:28:55,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 1146 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2022-11-21 17:28:55,280 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:28:55,280 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659228978]
[2022-11-21 17:28:55,281 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659228978] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:28:55,281 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:28:55,281 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:28:55,282 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308405401]
[2022-11-21 17:28:55,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:28:55,283 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:28:55,283 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:28:55,283 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:28:55,284 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:28:55,284 INFO  L87              Difference]: Start difference. First operand 115658 states and 122500 transitions. Second operand  has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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)
[2022-11-21 17:29:00,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:29:00,192 INFO  L93              Difference]: Finished difference Result 280880 states and 298463 transitions.
[2022-11-21 17:29:00,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:29:00,192 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 730
[2022-11-21 17:29:00,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:29:00,387 INFO  L225             Difference]: With dead ends: 280880
[2022-11-21 17:29:00,387 INFO  L226             Difference]: Without dead ends: 165975
[2022-11-21 17:29:00,443 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
[2022-11-21 17:29:00,444 INFO  L413           NwaCegarLoop]: 420 mSDtfsCounter, 732 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-11-21 17:29:00,445 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 426 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-11-21 17:29:00,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165975 states.
[2022-11-21 17:29:02,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165975 to 161469.
[2022-11-21 17:29:02,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 161469 states, 161468 states have (on average 1.056847177149652) internal successors, (170647), 161468 states have internal predecessors, (170647), 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)
[2022-11-21 17:29:02,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 161469 states to 161469 states and 170647 transitions.
[2022-11-21 17:29:02,759 INFO  L78                 Accepts]: Start accepts. Automaton has 161469 states and 170647 transitions. Word has length 730
[2022-11-21 17:29:02,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:29:02,759 INFO  L495      AbstractCegarLoop]: Abstraction has 161469 states and 170647 transitions.
[2022-11-21 17:29:02,760 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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)
[2022-11-21 17:29:02,760 INFO  L276                IsEmpty]: Start isEmpty. Operand 161469 states and 170647 transitions.
[2022-11-21 17:29:02,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 773
[2022-11-21 17:29:02,777 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:29:02,778 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:29:02,778 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-11-21 17:29:02,778 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:29:02,779 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:29:02,779 INFO  L85        PathProgramCache]: Analyzing trace with hash -451339748, now seen corresponding path program 1 times
[2022-11-21 17:29:02,779 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:29:02,779 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247783171]
[2022-11-21 17:29:02,780 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:29:02,780 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:29:03,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:29:03,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 1336 backedges. 1013 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked.
[2022-11-21 17:29:03,934 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:29:03,935 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247783171]
[2022-11-21 17:29:03,935 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247783171] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:29:03,935 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:29:03,935 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-21 17:29:03,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858941920]
[2022-11-21 17:29:03,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:29:03,936 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:29:03,937 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:29:03,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:29:03,937 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:29:03,937 INFO  L87              Difference]: Start difference. First operand 161469 states and 170647 transitions. Second operand  has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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)
[2022-11-21 17:29:08,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:29:08,468 INFO  L93              Difference]: Finished difference Result 324438 states and 342804 transitions.
[2022-11-21 17:29:08,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:29:08,469 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 772
[2022-11-21 17:29:08,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:29:08,674 INFO  L225             Difference]: With dead ends: 324438
[2022-11-21 17:29:08,674 INFO  L226             Difference]: Without dead ends: 163722
[2022-11-21 17:29:08,747 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
[2022-11-21 17:29:08,748 INFO  L413           NwaCegarLoop]: 214 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-11-21 17:29:08,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 220 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-11-21 17:29:08,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163722 states.
[2022-11-21 17:29:10,842 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163722 to 150204.
[2022-11-21 17:29:10,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 150204 states, 150203 states have (on average 1.0477686863777687) internal successors, (157378), 150203 states have internal predecessors, (157378), 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)
[2022-11-21 17:29:11,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 150204 states to 150204 states and 157378 transitions.
[2022-11-21 17:29:11,080 INFO  L78                 Accepts]: Start accepts. Automaton has 150204 states and 157378 transitions. Word has length 772
[2022-11-21 17:29:11,080 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:29:11,080 INFO  L495      AbstractCegarLoop]: Abstraction has 150204 states and 157378 transitions.
[2022-11-21 17:29:11,080 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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)
[2022-11-21 17:29:11,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 150204 states and 157378 transitions.
[2022-11-21 17:29:11,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 810
[2022-11-21 17:29:11,108 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:29:11,109 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:29:11,109 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-11-21 17:29:11,109 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-21 17:29:11,110 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:29:11,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -859800645, now seen corresponding path program 1 times
[2022-11-21 17:29:11,110 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:29:11,110 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470197490]
[2022-11-21 17:29:11,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:29:11,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:29:11,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat