./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label16.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8 --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 30ac9d757139c5cdf5a1759217b39f7196737cde87b76f64f4de5bbea69cd710
--- 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-2329fc7
[2022-12-13 18:01:08,070 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 18:01:08,071 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 18:01:08,090 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 18:01:08,091 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 18:01:08,092 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 18:01:08,093 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 18:01:08,095 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 18:01:08,096 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 18:01:08,097 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 18:01:08,098 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 18:01:08,099 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 18:01:08,099 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 18:01:08,101 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 18:01:08,102 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 18:01:08,103 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 18:01:08,103 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 18:01:08,104 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 18:01:08,106 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 18:01:08,108 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 18:01:08,109 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 18:01:08,110 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 18:01:08,111 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 18:01:08,112 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 18:01:08,116 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 18:01:08,116 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 18:01:08,116 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 18:01:08,117 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 18:01:08,117 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 18:01:08,118 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 18:01:08,119 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 18:01:08,119 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 18:01:08,120 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 18:01:08,126 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 18:01:08,127 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 18:01:08,127 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 18:01:08,128 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 18:01:08,128 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 18:01:08,128 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 18:01:08,129 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 18:01:08,129 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 18:01:08,130 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 18:01:08,153 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 18:01:08,154 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 18:01:08,154 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 18:01:08,154 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 18:01:08,154 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 18:01:08,154 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 18:01:08,155 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 18:01:08,155 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 18:01:08,155 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 18:01:08,155 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 18:01:08,155 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 18:01:08,155 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 18:01:08,155 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 18:01:08,156 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 18:01:08,156 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 18:01:08,157 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 18:01:08,157 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 18:01:08,160 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 18:01:08,160 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 18:01:08,160 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 18:01:08,160 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 18:01:08,161 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/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_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8
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 -> 30ac9d757139c5cdf5a1759217b39f7196737cde87b76f64f4de5bbea69cd710
[2022-12-13 18:01:08,339 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 18:01:08,359 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 18:01:08,361 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 18:01:08,362 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 18:01:08,362 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 18:01:08,363 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem05_label16.c
[2022-12-13 18:01:10,950 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 18:01:11,382 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 18:01:11,383 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/sv-benchmarks/c/eca-rers2012/Problem05_label16.c
[2022-12-13 18:01:11,411 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/data/5d4325d23/d6bba4a3f9c344868b044aee130659ad/FLAG46fe22b84
[2022-12-13 18:01:11,421 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/data/5d4325d23/d6bba4a3f9c344868b044aee130659ad
[2022-12-13 18:01:11,423 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 18:01:11,424 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 18:01:11,425 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 18:01:11,425 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 18:01:11,428 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 18:01:11,429 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:01:11" (1/1) ...
[2022-12-13 18:01:11,429 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f607a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:11, skipping insertion in model container
[2022-12-13 18:01:11,430 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:01:11" (1/1) ...
[2022-12-13 18:01:11,436 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 18:01:11,582 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 18:01:12,927 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_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/sv-benchmarks/c/eca-rers2012/Problem05_label16.c[381743,381756]
[2022-12-13 18:01:12,942 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 18:01:12,950 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 18:01:13,749 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_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/sv-benchmarks/c/eca-rers2012/Problem05_label16.c[381743,381756]
[2022-12-13 18:01:13,751 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 18:01:13,781 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 18:01:13,781 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13 WrapperNode
[2022-12-13 18:01:13,781 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 18:01:13,782 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 18:01:13,782 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 18:01:13,782 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 18:01:13,787 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:13,847 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,146 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-12-13 18:01:14,146 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 18:01:14,147 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 18:01:14,147 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 18:01:14,147 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 18:01:14,156 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,157 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,206 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,206 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,377 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,425 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,447 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,462 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,508 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 18:01:14,509 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 18:01:14,509 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 18:01:14,509 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 18:01:14,510 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (1/1) ...
[2022-12-13 18:01:14,516 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 18:01:14,526 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:01:14,537 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 18:01:14,539 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 18:01:14,572 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 18:01:14,572 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 18:01:14,572 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 18:01:14,573 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 18:01:14,644 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 18:01:14,646 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 18:01:20,020 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 18:01:20,035 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 18:01:20,035 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 18:01:20,038 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:01:20 BoogieIcfgContainer
[2022-12-13 18:01:20,039 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 18:01:20,040 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 18:01:20,040 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 18:01:20,042 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 18:01:20,043 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:01:11" (1/3) ...
[2022-12-13 18:01:20,043 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf0602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:01:20, skipping insertion in model container
[2022-12-13 18:01:20,043 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:01:13" (2/3) ...
[2022-12-13 18:01:20,043 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf0602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:01:20, skipping insertion in model container
[2022-12-13 18:01:20,043 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:01:20" (3/3) ...
[2022-12-13 18:01:20,045 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label16.c
[2022-12-13 18:01:20,058 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 18:01:20,058 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 18:01:20,120 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 18:01:20,125 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;@5c381f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 18:01:20,125 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 18:01:20,132 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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)
[2022-12-13 18:01:20,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1689
[2022-12-13 18:01:20,205 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:01:20,207 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:01:20,207 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:01:20,211 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:01:20,211 INFO  L85        PathProgramCache]: Analyzing trace with hash 509814754, now seen corresponding path program 1 times
[2022-12-13 18:01:20,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:01:20,218 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143276466]
[2022-12-13 18:01:20,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:01:20,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:01:20,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:01:24,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 18:01:24,357 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:01:24,357 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143276466]
[2022-12-13 18:01:24,358 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143276466] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:01:24,358 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:01:24,358 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:01:24,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068903059]
[2022-12-13 18:01:24,360 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:01:24,365 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 18:01:24,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:01:24,390 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 18:01:24,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 18:01:24,398 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 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)
[2022-12-13 18:01:35,830 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:01:35,831 INFO  L93              Difference]: Finished difference Result 9561 states and 18419 transitions.
[2022-12-13 18:01:35,832 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-12-13 18:01:35,833 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 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 1688
[2022-12-13 18:01:35,836 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:01:35,863 INFO  L225             Difference]: With dead ends: 9561
[2022-12-13 18:01:35,863 INFO  L226             Difference]: Without dead ends: 7306
[2022-12-13 18:01:35,871 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
[2022-12-13 18:01:35,874 INFO  L413           NwaCegarLoop]: 1220 mSDtfsCounter, 3997 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 11174 mSolverCounterSat, 4896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3997 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 16070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4896 IncrementalHoareTripleChecker+Valid, 11174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2022-12-13 18:01:35,874 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3997 Valid, 1720 Invalid, 16070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4896 Valid, 11174 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2022-12-13 18:01:35,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7306 states.
[2022-12-13 18:01:36,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7306 to 5619.
[2022-12-13 18:01:36,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5619 states, 5618 states have (on average 1.523495906016376) internal successors, (8559), 5618 states have internal predecessors, (8559), 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)
[2022-12-13 18:01:36,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 8559 transitions.
[2022-12-13 18:01:36,041 INFO  L78                 Accepts]: Start accepts. Automaton has 5619 states and 8559 transitions. Word has length 1688
[2022-12-13 18:01:36,044 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:01:36,044 INFO  L495      AbstractCegarLoop]: Abstraction has 5619 states and 8559 transitions.
[2022-12-13 18:01:36,045 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 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)
[2022-12-13 18:01:36,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 5619 states and 8559 transitions.
[2022-12-13 18:01:36,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1803
[2022-12-13 18:01:36,168 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:01:36,169 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:01:36,169 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 18:01:36,169 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:01:36,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:01:36,170 INFO  L85        PathProgramCache]: Analyzing trace with hash -1135868148, now seen corresponding path program 1 times
[2022-12-13 18:01:36,170 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:01:36,170 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209494751]
[2022-12-13 18:01:36,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:01:36,171 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:01:36,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:01:37,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 18:01:37,483 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:01:37,483 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209494751]
[2022-12-13 18:01:37,483 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209494751] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:01:37,484 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:01:37,484 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:01:37,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810728306]
[2022-12-13 18:01:37,484 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:01:37,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:01:37,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:01:37,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:01:37,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:01:37,490 INFO  L87              Difference]: Start difference. First operand 5619 states and 8559 transitions. Second operand  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 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)
[2022-12-13 18:01:42,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:01:42,414 INFO  L93              Difference]: Finished difference Result 14776 states and 23474 transitions.
[2022-12-13 18:01:42,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:01:42,415 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 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 1802
[2022-12-13 18:01:42,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:01:42,432 INFO  L225             Difference]: With dead ends: 14776
[2022-12-13 18:01:42,432 INFO  L226             Difference]: Without dead ends: 9159
[2022-12-13 18:01:42,437 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
[2022-12-13 18:01:42,438 INFO  L413           NwaCegarLoop]: 1004 mSDtfsCounter, 2112 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5309 mSolverCounterSat, 2634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 7943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2634 IncrementalHoareTripleChecker+Valid, 5309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2022-12-13 18:01:42,438 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 1172 Invalid, 7943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2634 Valid, 5309 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2022-12-13 18:01:42,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9159 states.
[2022-12-13 18:01:42,535 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9159 to 9074.
[2022-12-13 18:01:42,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9074 states, 9073 states have (on average 1.5619971343546788) internal successors, (14172), 9073 states have internal predecessors, (14172), 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)
[2022-12-13 18:01:42,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9074 states to 9074 states and 14172 transitions.
[2022-12-13 18:01:42,558 INFO  L78                 Accepts]: Start accepts. Automaton has 9074 states and 14172 transitions. Word has length 1802
[2022-12-13 18:01:42,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:01:42,558 INFO  L495      AbstractCegarLoop]: Abstraction has 9074 states and 14172 transitions.
[2022-12-13 18:01:42,559 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 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)
[2022-12-13 18:01:42,559 INFO  L276                IsEmpty]: Start isEmpty. Operand 9074 states and 14172 transitions.
[2022-12-13 18:01:42,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1805
[2022-12-13 18:01:42,601 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:01:42,602 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:01:42,602 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 18:01:42,602 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:01:42,603 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:01:42,603 INFO  L85        PathProgramCache]: Analyzing trace with hash -697701049, now seen corresponding path program 1 times
[2022-12-13 18:01:42,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:01:42,603 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792545037]
[2022-12-13 18:01:42,604 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:01:42,604 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:01:42,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:01:44,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 18:01:44,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:01:44,826 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792545037]
[2022-12-13 18:01:44,826 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792545037] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:01:44,827 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:01:44,827 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:01:44,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303378640]
[2022-12-13 18:01:44,827 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:01:44,829 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 18:01:44,829 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:01:44,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 18:01:44,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 18:01:44,831 INFO  L87              Difference]: Start difference. First operand 9074 states and 14172 transitions. Second operand  has 4 states, 4 states have (on average 451.0) internal successors, (1804), 3 states have internal predecessors, (1804), 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)
[2022-12-13 18:01:51,248 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:01:51,248 INFO  L93              Difference]: Finished difference Result 31808 states and 51841 transitions.
[2022-12-13 18:01:51,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 18:01:51,249 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 451.0) internal successors, (1804), 3 states have internal predecessors, (1804), 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 1804
[2022-12-13 18:01:51,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:01:51,288 INFO  L225             Difference]: With dead ends: 31808
[2022-12-13 18:01:51,288 INFO  L226             Difference]: Without dead ends: 22736
[2022-12-13 18:01:51,294 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
[2022-12-13 18:01:51,295 INFO  L413           NwaCegarLoop]: 1548 mSDtfsCounter, 4327 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 9282 mSolverCounterSat, 3863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 13145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3863 IncrementalHoareTripleChecker+Valid, 9282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2022-12-13 18:01:51,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4327 Valid, 1885 Invalid, 13145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3863 Valid, 9282 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2022-12-13 18:01:51,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22736 states.
[2022-12-13 18:01:51,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22736 to 22682.
[2022-12-13 18:01:51,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22682 states, 22681 states have (on average 1.402319121731846) internal successors, (31806), 22681 states have internal predecessors, (31806), 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)
[2022-12-13 18:01:51,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22682 states to 22682 states and 31806 transitions.
[2022-12-13 18:01:51,530 INFO  L78                 Accepts]: Start accepts. Automaton has 22682 states and 31806 transitions. Word has length 1804
[2022-12-13 18:01:51,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:01:51,531 INFO  L495      AbstractCegarLoop]: Abstraction has 22682 states and 31806 transitions.
[2022-12-13 18:01:51,531 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 451.0) internal successors, (1804), 3 states have internal predecessors, (1804), 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)
[2022-12-13 18:01:51,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 22682 states and 31806 transitions.
[2022-12-13 18:01:51,570 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1806
[2022-12-13 18:01:51,570 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:01:51,571 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:01:51,571 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 18:01:51,571 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:01:51,571 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:01:51,572 INFO  L85        PathProgramCache]: Analyzing trace with hash -1958767290, now seen corresponding path program 1 times
[2022-12-13 18:01:51,572 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:01:51,572 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694408254]
[2022-12-13 18:01:51,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:01:51,572 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:01:51,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:01:52,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 18:01:52,869 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:01:52,869 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694408254]
[2022-12-13 18:01:52,869 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694408254] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:01:52,869 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:01:52,869 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:01:52,870 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618556216]
[2022-12-13 18:01:52,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:01:52,871 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:01:52,871 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:01:52,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:01:52,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:01:52,872 INFO  L87              Difference]: Start difference. First operand 22682 states and 31806 transitions. Second operand  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 3 states have internal predecessors, (1805), 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)
[2022-12-13 18:01:57,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:01:57,968 INFO  L93              Difference]: Finished difference Result 62362 states and 88307 transitions.
[2022-12-13 18:01:57,968 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:01:57,969 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 3 states have internal predecessors, (1805), 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 1805
[2022-12-13 18:01:57,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:01:58,007 INFO  L225             Difference]: With dead ends: 62362
[2022-12-13 18:01:58,008 INFO  L226             Difference]: Without dead ends: 39682
[2022-12-13 18:01:58,023 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
[2022-12-13 18:01:58,024 INFO  L413           NwaCegarLoop]: 3884 mSDtfsCounter, 1786 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 5746 mSolverCounterSat, 1477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 7223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 5746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-12-13 18:01:58,024 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 4150 Invalid, 7223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1477 Valid, 5746 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-12-13 18:01:58,049 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39682 states.
[2022-12-13 18:01:58,318 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39682 to 39663.
[2022-12-13 18:01:58,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39663 states, 39662 states have (on average 1.279436236195855) internal successors, (50745), 39662 states have internal predecessors, (50745), 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)
[2022-12-13 18:01:58,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39663 states to 39663 states and 50745 transitions.
[2022-12-13 18:01:58,391 INFO  L78                 Accepts]: Start accepts. Automaton has 39663 states and 50745 transitions. Word has length 1805
[2022-12-13 18:01:58,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:01:58,392 INFO  L495      AbstractCegarLoop]: Abstraction has 39663 states and 50745 transitions.
[2022-12-13 18:01:58,392 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 3 states have internal predecessors, (1805), 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)
[2022-12-13 18:01:58,392 INFO  L276                IsEmpty]: Start isEmpty. Operand 39663 states and 50745 transitions.
[2022-12-13 18:01:58,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1815
[2022-12-13 18:01:58,440 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:01:58,441 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:01:58,441 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 18:01:58,441 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:01:58,442 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:01:58,442 INFO  L85        PathProgramCache]: Analyzing trace with hash 1620424039, now seen corresponding path program 1 times
[2022-12-13 18:01:58,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:01:58,442 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570685259]
[2022-12-13 18:01:58,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:01:58,442 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:01:58,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:01:59,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 141 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-12-13 18:01:59,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:01:59,731 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570685259]
[2022-12-13 18:01:59,732 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570685259] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:01:59,732 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:01:59,732 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 18:01:59,732 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783708362]
[2022-12-13 18:01:59,732 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:01:59,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:01:59,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:01:59,734 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:01:59,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:01:59,735 INFO  L87              Difference]: Start difference. First operand 39663 states and 50745 transitions. Second operand  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 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)
[2022-12-13 18:02:04,430 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:04,431 INFO  L93              Difference]: Finished difference Result 98010 states and 124178 transitions.
[2022-12-13 18:02:04,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:04,431 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 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 1814
[2022-12-13 18:02:04,431 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:04,485 INFO  L225             Difference]: With dead ends: 98010
[2022-12-13 18:02:04,485 INFO  L226             Difference]: Without dead ends: 58349
[2022-12-13 18:02:04,507 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
[2022-12-13 18:02:04,508 INFO  L413           NwaCegarLoop]: 2052 mSDtfsCounter, 1766 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 5826 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 6701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 5826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:04,508 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 2356 Invalid, 6701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 5826 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2022-12-13 18:02:04,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58349 states.
[2022-12-13 18:02:04,936 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58349 to 56644.
[2022-12-13 18:02:04,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56644 states, 56643 states have (on average 1.2345744399131402) internal successors, (69930), 56643 states have internal predecessors, (69930), 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)
[2022-12-13 18:02:05,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56644 states to 56644 states and 69930 transitions.
[2022-12-13 18:02:05,040 INFO  L78                 Accepts]: Start accepts. Automaton has 56644 states and 69930 transitions. Word has length 1814
[2022-12-13 18:02:05,040 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:05,040 INFO  L495      AbstractCegarLoop]: Abstraction has 56644 states and 69930 transitions.
[2022-12-13 18:02:05,041 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 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)
[2022-12-13 18:02:05,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 56644 states and 69930 transitions.
[2022-12-13 18:02:05,109 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1828
[2022-12-13 18:02:05,110 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:05,110 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:05,110 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 18:02:05,111 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:05,111 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:05,111 INFO  L85        PathProgramCache]: Analyzing trace with hash 495542659, now seen corresponding path program 1 times
[2022-12-13 18:02:05,111 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:05,112 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717612104]
[2022-12-13 18:02:05,112 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:05,112 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:05,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:06,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2022-12-13 18:02:06,238 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:06,238 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717612104]
[2022-12-13 18:02:06,239 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717612104] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:06,239 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:06,239 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 18:02:06,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846245610]
[2022-12-13 18:02:06,239 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:06,240 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:06,240 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:06,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:06,241 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:06,241 INFO  L87              Difference]: Start difference. First operand 56644 states and 69930 transitions. Second operand  has 3 states, 3 states have (on average 600.0) internal successors, (1800), 2 states have internal predecessors, (1800), 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)
[2022-12-13 18:02:11,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:11,567 INFO  L93              Difference]: Finished difference Result 164219 states and 202641 transitions.
[2022-12-13 18:02:11,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:11,568 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 600.0) internal successors, (1800), 2 states have internal predecessors, (1800), 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 1827
[2022-12-13 18:02:11,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:11,670 INFO  L225             Difference]: With dead ends: 164219
[2022-12-13 18:02:11,670 INFO  L226             Difference]: Without dead ends: 107577
[2022-12-13 18:02:11,696 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
[2022-12-13 18:02:11,697 INFO  L413           NwaCegarLoop]: 1551 mSDtfsCounter, 2432 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4781 mSolverCounterSat, 2055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 6836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2055 IncrementalHoareTripleChecker+Valid, 4781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:11,697 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 1738 Invalid, 6836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2055 Valid, 4781 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-12-13 18:02:11,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107577 states.
[2022-12-13 18:02:12,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107577 to 107576.
[2022-12-13 18:02:12,661 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107576 states, 107575 states have (on average 1.1669532884034395) internal successors, (125535), 107575 states have internal predecessors, (125535), 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)
[2022-12-13 18:02:12,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107576 states to 107576 states and 125535 transitions.
[2022-12-13 18:02:12,859 INFO  L78                 Accepts]: Start accepts. Automaton has 107576 states and 125535 transitions. Word has length 1827
[2022-12-13 18:02:12,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:12,860 INFO  L495      AbstractCegarLoop]: Abstraction has 107576 states and 125535 transitions.
[2022-12-13 18:02:12,860 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 600.0) internal successors, (1800), 2 states have internal predecessors, (1800), 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)
[2022-12-13 18:02:12,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 107576 states and 125535 transitions.
[2022-12-13 18:02:12,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1845
[2022-12-13 18:02:12,937 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:12,938 INFO  L195           NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:12,938 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 18:02:12,938 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:12,939 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:12,939 INFO  L85        PathProgramCache]: Analyzing trace with hash 1354900041, now seen corresponding path program 1 times
[2022-12-13 18:02:12,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:12,939 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112179495]
[2022-12-13 18:02:12,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:12,940 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:13,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:14,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-12-13 18:02:14,084 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:14,084 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112179495]
[2022-12-13 18:02:14,084 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112179495] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:14,084 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:14,085 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:02:14,085 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101180653]
[2022-12-13 18:02:14,085 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:14,086 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:14,086 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:14,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:14,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:14,088 INFO  L87              Difference]: Start difference. First operand 107576 states and 125535 transitions. Second operand  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 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)
[2022-12-13 18:02:18,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:18,896 INFO  L93              Difference]: Finished difference Result 216852 states and 252781 transitions.
[2022-12-13 18:02:18,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:18,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 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 1844
[2022-12-13 18:02:18,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:19,000 INFO  L225             Difference]: With dead ends: 216852
[2022-12-13 18:02:19,000 INFO  L226             Difference]: Without dead ends: 107580
[2022-12-13 18:02:19,025 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
[2022-12-13 18:02:19,025 INFO  L413           NwaCegarLoop]: 2873 mSDtfsCounter, 2531 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 1559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 6408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1559 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:19,026 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 2982 Invalid, 6408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1559 Valid, 4849 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-12-13 18:02:19,089 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107580 states.
[2022-12-13 18:02:19,797 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107580 to 104179.
[2022-12-13 18:02:19,859 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 104179 states, 104178 states have (on average 1.1148131083338133) internal successors, (116139), 104178 states have internal predecessors, (116139), 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)
[2022-12-13 18:02:20,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104179 states to 104179 states and 116139 transitions.
[2022-12-13 18:02:20,065 INFO  L78                 Accepts]: Start accepts. Automaton has 104179 states and 116139 transitions. Word has length 1844
[2022-12-13 18:02:20,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:20,065 INFO  L495      AbstractCegarLoop]: Abstraction has 104179 states and 116139 transitions.
[2022-12-13 18:02:20,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 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)
[2022-12-13 18:02:20,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 104179 states and 116139 transitions.
[2022-12-13 18:02:20,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1851
[2022-12-13 18:02:20,192 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:20,193 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:20,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 18:02:20,193 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:20,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:20,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 971254800, now seen corresponding path program 1 times
[2022-12-13 18:02:20,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:20,194 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340433604]
[2022-12-13 18:02:20,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:20,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:20,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:21,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 229 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-12-13 18:02:21,564 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:21,564 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340433604]
[2022-12-13 18:02:21,564 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340433604] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:21,564 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:21,565 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:02:21,565 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532243591]
[2022-12-13 18:02:21,565 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:21,566 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:21,566 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:21,567 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:21,567 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:21,567 INFO  L87              Difference]: Start difference. First operand 104179 states and 116139 transitions. Second operand  has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 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)
[2022-12-13 18:02:26,551 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:26,551 INFO  L93              Difference]: Finished difference Result 257614 states and 290442 transitions.
[2022-12-13 18:02:26,551 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:26,552 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 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 1850
[2022-12-13 18:02:26,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:26,697 INFO  L225             Difference]: With dead ends: 257614
[2022-12-13 18:02:26,697 INFO  L226             Difference]: Without dead ends: 155135
[2022-12-13 18:02:26,734 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
[2022-12-13 18:02:26,735 INFO  L413           NwaCegarLoop]: 1957 mSDtfsCounter, 1835 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 5534 mSolverCounterSat, 1518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 7052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1518 IncrementalHoareTripleChecker+Valid, 5534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:26,735 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 2208 Invalid, 7052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1518 Valid, 5534 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-12-13 18:02:26,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155135 states.
[2022-12-13 18:02:28,067 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155135 to 146633.
[2022-12-13 18:02:28,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 146633 states, 146632 states have (on average 1.0960772546238202) internal successors, (160720), 146632 states have internal predecessors, (160720), 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)
[2022-12-13 18:02:28,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146633 states to 146633 states and 160720 transitions.
[2022-12-13 18:02:28,370 INFO  L78                 Accepts]: Start accepts. Automaton has 146633 states and 160720 transitions. Word has length 1850
[2022-12-13 18:02:28,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:28,371 INFO  L495      AbstractCegarLoop]: Abstraction has 146633 states and 160720 transitions.
[2022-12-13 18:02:28,371 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 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)
[2022-12-13 18:02:28,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 146633 states and 160720 transitions.
[2022-12-13 18:02:28,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1904
[2022-12-13 18:02:28,627 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:28,627 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:28,628 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-13 18:02:28,628 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:28,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:28,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -959408177, now seen corresponding path program 1 times
[2022-12-13 18:02:28,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:28,629 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511282989]
[2022-12-13 18:02:28,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:28,629 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:28,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:29,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 355 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2022-12-13 18:02:29,641 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:29,641 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511282989]
[2022-12-13 18:02:29,641 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511282989] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:29,642 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:29,642 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 18:02:29,642 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139010653]
[2022-12-13 18:02:29,642 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:29,644 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:29,644 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:29,646 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:29,646 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:29,646 INFO  L87              Difference]: Start difference. First operand 146633 states and 160720 transitions. Second operand  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 2 states have internal predecessors, (1801), 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)
[2022-12-13 18:02:34,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:34,481 INFO  L93              Difference]: Finished difference Result 340801 states and 372313 transitions.
[2022-12-13 18:02:34,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:34,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 2 states have internal predecessors, (1801), 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 1903
[2022-12-13 18:02:34,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:34,692 INFO  L225             Difference]: With dead ends: 340801
[2022-12-13 18:02:34,693 INFO  L226             Difference]: Without dead ends: 180527
[2022-12-13 18:02:34,775 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
[2022-12-13 18:02:34,776 INFO  L413           NwaCegarLoop]: 1035 mSDtfsCounter, 3076 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 5954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:34,776 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3076 Valid, 1113 Invalid, 5954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 4768 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 18:02:34,934 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180527 states.
[2022-12-13 18:02:36,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180527 to 172036.
[2022-12-13 18:02:36,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 172036 states, 172035 states have (on average 1.065329729415526) internal successors, (183274), 172035 states have internal predecessors, (183274), 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)
[2022-12-13 18:02:36,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 172036 states to 172036 states and 183274 transitions.
[2022-12-13 18:02:36,529 INFO  L78                 Accepts]: Start accepts. Automaton has 172036 states and 183274 transitions. Word has length 1903
[2022-12-13 18:02:36,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:36,530 INFO  L495      AbstractCegarLoop]: Abstraction has 172036 states and 183274 transitions.
[2022-12-13 18:02:36,530 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 2 states have internal predecessors, (1801), 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)
[2022-12-13 18:02:36,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 172036 states and 183274 transitions.
[2022-12-13 18:02:36,780 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1922
[2022-12-13 18:02:36,780 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:36,781 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-13 18:02:36,781 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-12-13 18:02:36,781 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:36,782 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:36,782 INFO  L85        PathProgramCache]: Analyzing trace with hash -252010440, now seen corresponding path program 1 times
[2022-12-13 18:02:36,783 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:36,783 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948003003]
[2022-12-13 18:02:36,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:36,783 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:36,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:39,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 425 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2022-12-13 18:02:39,232 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:39,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948003003]
[2022-12-13 18:02:39,232 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948003003] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:39,232 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:39,233 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:02:39,233 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645100027]
[2022-12-13 18:02:39,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:39,236 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:39,236 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:39,239 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:39,239 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:39,239 INFO  L87              Difference]: Start difference. First operand 172036 states and 183274 transitions. Second operand  has 3 states, 3 states have (on average 623.3333333333334) internal successors, (1870), 3 states have internal predecessors, (1870), 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)
[2022-12-13 18:02:45,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:45,093 INFO  L93              Difference]: Finished difference Result 381493 states and 406921 transitions.
[2022-12-13 18:02:45,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:45,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 623.3333333333334) internal successors, (1870), 3 states have internal predecessors, (1870), 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 1921
[2022-12-13 18:02:45,094 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:45,350 INFO  L225             Difference]: With dead ends: 381493
[2022-12-13 18:02:45,350 INFO  L226             Difference]: Without dead ends: 209458
[2022-12-13 18:02:45,446 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
[2022-12-13 18:02:45,446 INFO  L413           NwaCegarLoop]: 3856 mSDtfsCounter, 1764 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6112 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 4061 SdHoareTripleChecker+Invalid, 6901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 6112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:45,447 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 4061 Invalid, 6901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 6112 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-12-13 18:02:45,623 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 209458 states.
[2022-12-13 18:02:47,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 209458 to 207696.
[2022-12-13 18:02:47,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 207696 states, 207695 states have (on average 1.0585377596957077) internal successors, (219853), 207695 states have internal predecessors, (219853), 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)
[2022-12-13 18:02:47,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 207696 states to 207696 states and 219853 transitions.
[2022-12-13 18:02:47,570 INFO  L78                 Accepts]: Start accepts. Automaton has 207696 states and 219853 transitions. Word has length 1921
[2022-12-13 18:02:47,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:47,571 INFO  L495      AbstractCegarLoop]: Abstraction has 207696 states and 219853 transitions.
[2022-12-13 18:02:47,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 623.3333333333334) internal successors, (1870), 3 states have internal predecessors, (1870), 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)
[2022-12-13 18:02:47,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 207696 states and 219853 transitions.
[2022-12-13 18:02:47,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2075
[2022-12-13 18:02:47,705 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:47,706 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:47,706 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-12-13 18:02:47,706 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:47,706 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:47,707 INFO  L85        PathProgramCache]: Analyzing trace with hash 1181080249, now seen corresponding path program 1 times
[2022-12-13 18:02:47,707 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:47,707 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096146560]
[2022-12-13 18:02:47,707 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:47,707 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:48,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:02:50,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 583 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 18:02:50,795 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:02:50,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096146560]
[2022-12-13 18:02:50,795 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096146560] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:02:50,795 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:02:50,796 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:02:50,796 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033259655]
[2022-12-13 18:02:50,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:02:50,797 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:02:50,797 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:02:50,798 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:02:50,798 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:02:50,798 INFO  L87              Difference]: Start difference. First operand 207696 states and 219853 transitions. Second operand  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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)
[2022-12-13 18:02:56,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:02:56,329 INFO  L93              Difference]: Finished difference Result 423887 states and 448533 transitions.
[2022-12-13 18:02:56,329 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:02:56,330 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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 2074
[2022-12-13 18:02:56,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:02:56,671 INFO  L225             Difference]: With dead ends: 423887
[2022-12-13 18:02:56,671 INFO  L226             Difference]: Without dead ends: 217891
[2022-12-13 18:02:56,702 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
[2022-12-13 18:02:56,703 INFO  L413           NwaCegarLoop]: 3691 mSDtfsCounter, 1701 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 5289 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 5414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 5289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2022-12-13 18:02:56,703 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 3906 Invalid, 5414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 5289 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time]
[2022-12-13 18:02:56,816 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 217891 states.
[2022-12-13 18:02:58,377 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 217891 to 217884.
[2022-12-13 18:02:58,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 217884 states, 217883 states have (on average 1.0564110095785353) internal successors, (230174), 217883 states have internal predecessors, (230174), 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)
[2022-12-13 18:02:58,757 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 217884 states to 217884 states and 230174 transitions.
[2022-12-13 18:02:58,757 INFO  L78                 Accepts]: Start accepts. Automaton has 217884 states and 230174 transitions. Word has length 2074
[2022-12-13 18:02:58,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:02:58,757 INFO  L495      AbstractCegarLoop]: Abstraction has 217884 states and 230174 transitions.
[2022-12-13 18:02:58,758 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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)
[2022-12-13 18:02:58,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 217884 states and 230174 transitions.
[2022-12-13 18:02:58,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2086
[2022-12-13 18:02:58,891 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:02:58,892 INFO  L195           NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:02:58,892 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-12-13 18:02:58,892 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:02:58,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:02:58,893 INFO  L85        PathProgramCache]: Analyzing trace with hash 1967005748, now seen corresponding path program 1 times
[2022-12-13 18:02:58,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:02:58,893 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407863959]
[2022-12-13 18:02:58,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:02:58,893 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:02:59,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:03:00,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 627 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 18:03:00,397 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:03:00,397 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407863959]
[2022-12-13 18:03:00,397 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407863959] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:03:00,397 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:03:00,398 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:03:00,398 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996884348]
[2022-12-13 18:03:00,398 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:03:00,400 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:03:00,401 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:03:00,403 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:03:00,403 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:03:00,403 INFO  L87              Difference]: Start difference. First operand 217884 states and 230174 transitions. Second operand  has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 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)
[2022-12-13 18:03:05,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:03:05,454 INFO  L93              Difference]: Finished difference Result 508772 states and 539815 transitions.
[2022-12-13 18:03:05,455 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:03:05,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 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 2085
[2022-12-13 18:03:05,456 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:03:05,774 INFO  L225             Difference]: With dead ends: 508772
[2022-12-13 18:03:05,774 INFO  L226             Difference]: Without dead ends: 292588
[2022-12-13 18:03:05,860 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
[2022-12-13 18:03:05,860 INFO  L413           NwaCegarLoop]: 3633 mSDtfsCounter, 1860 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 6450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-12-13 18:03:05,861 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 3947 Invalid, 6450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-12-13 18:03:06,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 292588 states.
[2022-12-13 18:03:08,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 292588 to 287492.
[2022-12-13 18:03:08,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 287492 states, 287491 states have (on average 1.0498241684087501) internal successors, (301815), 287491 states have internal predecessors, (301815), 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)
[2022-12-13 18:03:08,919 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 287492 states to 287492 states and 301815 transitions.
[2022-12-13 18:03:08,919 INFO  L78                 Accepts]: Start accepts. Automaton has 287492 states and 301815 transitions. Word has length 2085
[2022-12-13 18:03:08,919 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:03:08,919 INFO  L495      AbstractCegarLoop]: Abstraction has 287492 states and 301815 transitions.
[2022-12-13 18:03:08,920 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 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)
[2022-12-13 18:03:08,920 INFO  L276                IsEmpty]: Start isEmpty. Operand 287492 states and 301815 transitions.
[2022-12-13 18:03:09,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2101
[2022-12-13 18:03:09,074 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:03:09,075 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:03:09,075 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-12-13 18:03:09,075 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:03:09,075 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:03:09,075 INFO  L85        PathProgramCache]: Analyzing trace with hash -49228086, now seen corresponding path program 1 times
[2022-12-13 18:03:09,075 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:03:09,076 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92756520]
[2022-12-13 18:03:09,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:03:09,076 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:03:09,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:03:13,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 687 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 18:03:13,889 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:03:13,889 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92756520]
[2022-12-13 18:03:13,889 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92756520] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:03:13,889 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:03:13,890 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:03:13,890 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904329818]
[2022-12-13 18:03:13,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:03:13,892 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:03:13,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:03:13,895 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:03:13,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:03:13,895 INFO  L87              Difference]: Start difference. First operand 287492 states and 301815 transitions. Second operand  has 3 states, 3 states have (on average 652.6666666666666) internal successors, (1958), 3 states have internal predecessors, (1958), 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)
[2022-12-13 18:03:20,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:03:20,313 INFO  L93              Difference]: Finished difference Result 617493 states and 649487 transitions.
[2022-12-13 18:03:20,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:03:20,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 652.6666666666666) internal successors, (1958), 3 states have internal predecessors, (1958), 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 2100
[2022-12-13 18:03:20,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:03:20,657 INFO  L225             Difference]: With dead ends: 617493
[2022-12-13 18:03:20,657 INFO  L226             Difference]: Without dead ends: 331701
[2022-12-13 18:03:20,728 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:03:20,729 INFO  L413           NwaCegarLoop]: 3361 mSDtfsCounter, 1772 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4976 mSolverCounterSat, 1722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 6698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1722 IncrementalHoareTripleChecker+Valid, 4976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2022-12-13 18:03:20,729 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 3563 Invalid, 6698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1722 Valid, 4976 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2022-12-13 18:03:20,986 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 331701 states.
[2022-12-13 18:03:23,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 331701 to 326553.
[2022-12-13 18:03:23,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326553 states, 326552 states have (on average 1.047327837526642) internal successors, (342007), 326552 states have internal predecessors, (342007), 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)
[2022-12-13 18:03:24,104 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326553 states to 326553 states and 342007 transitions.
[2022-12-13 18:03:24,105 INFO  L78                 Accepts]: Start accepts. Automaton has 326553 states and 342007 transitions. Word has length 2100
[2022-12-13 18:03:24,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:03:24,105 INFO  L495      AbstractCegarLoop]: Abstraction has 326553 states and 342007 transitions.
[2022-12-13 18:03:24,106 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 652.6666666666666) internal successors, (1958), 3 states have internal predecessors, (1958), 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)
[2022-12-13 18:03:24,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 326553 states and 342007 transitions.
[2022-12-13 18:03:24,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2343
[2022-12-13 18:03:24,466 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:03:24,467 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:03:24,467 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-12-13 18:03:24,467 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:03:24,467 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:03:24,468 INFO  L85        PathProgramCache]: Analyzing trace with hash -2062399621, now seen corresponding path program 1 times
[2022-12-13 18:03:24,468 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:03:24,468 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554876259]
[2022-12-13 18:03:24,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:03:24,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:03:24,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:03:26,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 1540 backedges. 1081 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked.
[2022-12-13 18:03:26,524 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:03:26,524 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554876259]
[2022-12-13 18:03:26,524 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554876259] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:03:26,524 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:03:26,524 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:03:26,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009072605]
[2022-12-13 18:03:26,525 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:03:26,526 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:03:26,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:03:26,528 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:03:26,528 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:03:26,528 INFO  L87              Difference]: Start difference. First operand 326553 states and 342007 transitions. Second operand  has 3 states, 3 states have (on average 656.3333333333334) internal successors, (1969), 3 states have internal predecessors, (1969), 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)
[2022-12-13 18:03:32,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:03:32,291 INFO  L93              Difference]: Finished difference Result 741405 states and 778147 transitions.
[2022-12-13 18:03:32,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:03:32,292 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 656.3333333333334) internal successors, (1969), 3 states have internal predecessors, (1969), 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 2342
[2022-12-13 18:03:32,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:03:32,961 INFO  L225             Difference]: With dead ends: 741405
[2022-12-13 18:03:32,961 INFO  L226             Difference]: Without dead ends: 414842
[2022-12-13 18:03:33,054 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
[2022-12-13 18:03:33,055 INFO  L413           NwaCegarLoop]: 3575 mSDtfsCounter, 1766 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5495 mSolverCounterSat, 1342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 6837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1342 IncrementalHoareTripleChecker+Valid, 5495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-12-13 18:03:33,055 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 3795 Invalid, 6837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1342 Valid, 5495 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-12-13 18:03:33,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 414842 states.
[2022-12-13 18:03:36,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 414842 to 408035.
[2022-12-13 18:03:36,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 408035 states, 408034 states have (on average 1.0381904449139043) internal successors, (423617), 408034 states have internal predecessors, (423617), 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)
[2022-12-13 18:03:37,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 408035 states to 408035 states and 423617 transitions.
[2022-12-13 18:03:37,288 INFO  L78                 Accepts]: Start accepts. Automaton has 408035 states and 423617 transitions. Word has length 2342
[2022-12-13 18:03:37,288 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:03:37,288 INFO  L495      AbstractCegarLoop]: Abstraction has 408035 states and 423617 transitions.
[2022-12-13 18:03:37,289 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 656.3333333333334) internal successors, (1969), 3 states have internal predecessors, (1969), 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)
[2022-12-13 18:03:37,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 408035 states and 423617 transitions.
[2022-12-13 18:03:37,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2659
[2022-12-13 18:03:37,682 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:03:37,683 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:03:37,683 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-12-13 18:03:37,683 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:03:37,683 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:03:37,683 INFO  L85        PathProgramCache]: Analyzing trace with hash -2098240460, now seen corresponding path program 1 times
[2022-12-13 18:03:37,683 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:03:37,684 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129870989]
[2022-12-13 18:03:37,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:03:37,684 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:03:37,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:03:40,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 1565 backedges. 1386 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 18:03:40,538 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:03:40,538 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129870989]
[2022-12-13 18:03:40,538 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129870989] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:03:40,538 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:03:40,538 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:03:40,538 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726601395]
[2022-12-13 18:03:40,538 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:03:40,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 18:03:40,539 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:03:40,540 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 18:03:40,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 18:03:40,541 INFO  L87              Difference]: Start difference. First operand 408035 states and 423617 transitions. Second operand  has 4 states, 4 states have (on average 629.0) internal successors, (2516), 3 states have internal predecessors, (2516), 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)
[2022-12-13 18:03:49,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:03:49,544 INFO  L93              Difference]: Finished difference Result 831351 states and 863845 transitions.
[2022-12-13 18:03:49,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 18:03:49,545 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 629.0) internal successors, (2516), 3 states have internal predecessors, (2516), 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 2658
[2022-12-13 18:03:49,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:03:50,074 INFO  L225             Difference]: With dead ends: 831351
[2022-12-13 18:03:50,074 INFO  L226             Difference]: Without dead ends: 423312
[2022-12-13 18:03:50,389 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
[2022-12-13 18:03:50,390 INFO  L413           NwaCegarLoop]: 881 mSDtfsCounter, 4674 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8724 mSolverCounterSat, 2124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 10848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2124 IncrementalHoareTripleChecker+Valid, 8724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2022-12-13 18:03:50,390 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 1106 Invalid, 10848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2124 Valid, 8724 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2022-12-13 18:03:50,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 423312 states.
[2022-12-13 18:03:53,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 423312 to 413122.
[2022-12-13 18:03:54,011 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 413122 states, 413121 states have (on average 1.0197569235163548) internal successors, (421283), 413121 states have internal predecessors, (421283), 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)
[2022-12-13 18:03:54,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413122 states to 413122 states and 421283 transitions.
[2022-12-13 18:03:54,643 INFO  L78                 Accepts]: Start accepts. Automaton has 413122 states and 421283 transitions. Word has length 2658
[2022-12-13 18:03:54,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:03:54,644 INFO  L495      AbstractCegarLoop]: Abstraction has 413122 states and 421283 transitions.
[2022-12-13 18:03:54,644 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 629.0) internal successors, (2516), 3 states have internal predecessors, (2516), 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)
[2022-12-13 18:03:54,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 413122 states and 421283 transitions.
[2022-12-13 18:03:55,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2831
[2022-12-13 18:03:55,063 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:03:55,064 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:03:55,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-12-13 18:03:55,064 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:03:55,064 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:03:55,065 INFO  L85        PathProgramCache]: Analyzing trace with hash 204804956, now seen corresponding path program 1 times
[2022-12-13 18:03:55,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:03:55,065 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750684590]
[2022-12-13 18:03:55,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:03:55,065 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:03:55,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:03:56,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 3405 backedges. 1874 proven. 0 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked.
[2022-12-13 18:03:56,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:03:56,847 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750684590]
[2022-12-13 18:03:56,847 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750684590] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:03:56,847 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:03:56,847 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 18:03:56,847 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356118528]
[2022-12-13 18:03:56,848 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:03:56,849 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:03:56,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:03:56,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:03:56,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:03:56,851 INFO  L87              Difference]: Start difference. First operand 413122 states and 421283 transitions. Second operand  has 3 states, 3 states have (on average 674.6666666666666) internal successors, (2024), 2 states have internal predecessors, (2024), 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)
[2022-12-13 18:04:00,513 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:04:00,513 INFO  L93              Difference]: Finished difference Result 822816 states and 839122 transitions.
[2022-12-13 18:04:00,514 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:04:00,514 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 674.6666666666666) internal successors, (2024), 2 states have internal predecessors, (2024), 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 2830
[2022-12-13 18:04:00,515 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:04:01,079 INFO  L225             Difference]: With dead ends: 822816
[2022-12-13 18:04:01,079 INFO  L226             Difference]: Without dead ends: 411389
[2022-12-13 18:04:01,244 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
[2022-12-13 18:04:01,245 INFO  L413           NwaCegarLoop]: 434 mSDtfsCounter, 2672 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2022-12-13 18:04:01,245 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 434 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2022-12-13 18:04:01,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 411389 states.
[2022-12-13 18:04:04,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 411389 to 411389.
[2022-12-13 18:04:04,864 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411389 states, 411388 states have (on average 1.0196432564877926) internal successors, (419469), 411388 states have internal predecessors, (419469), 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)
[2022-12-13 18:04:05,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411389 states to 411389 states and 419469 transitions.
[2022-12-13 18:04:05,433 INFO  L78                 Accepts]: Start accepts. Automaton has 411389 states and 419469 transitions. Word has length 2830
[2022-12-13 18:04:05,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:04:05,434 INFO  L495      AbstractCegarLoop]: Abstraction has 411389 states and 419469 transitions.
[2022-12-13 18:04:05,435 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 674.6666666666666) internal successors, (2024), 2 states have internal predecessors, (2024), 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)
[2022-12-13 18:04:05,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 411389 states and 419469 transitions.
[2022-12-13 18:04:05,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2875
[2022-12-13 18:04:05,860 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:04:05,861 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:04:05,861 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-12-13 18:04:05,861 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:04:05,862 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:04:05,862 INFO  L85        PathProgramCache]: Analyzing trace with hash -426560716, now seen corresponding path program 1 times
[2022-12-13 18:04:05,862 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:04:05,862 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559559876]
[2022-12-13 18:04:05,863 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:04:05,863 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:04:06,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:04:11,874 INFO  L134       CoverageAnalysis]: Checked inductivity of 2900 backedges. 2220 proven. 4 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked.
[2022-12-13 18:04:11,874 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:04:11,874 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559559876]
[2022-12-13 18:04:11,875 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559559876] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:04:11,875 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941270857]
[2022-12-13 18:04:11,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:04:11,876 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:04:11,876 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:04:11,877 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:04:11,878 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 18:04:12,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:04:12,602 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3235 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:04:12,632 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:04:12,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 2900 backedges. 1452 proven. 0 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked.
[2022-12-13 18:04:12,742 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:04:12,743 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941270857] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:04:12,743 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:04:12,743 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:04:12,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957233581]
[2022-12-13 18:04:12,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:04:12,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:04:12,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:04:12,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:04:12,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:04:12,747 INFO  L87              Difference]: Start difference. First operand 411389 states and 419469 transitions. Second operand  has 3 states, 3 states have (on average 743.3333333333334) internal successors, (2230), 3 states have internal predecessors, (2230), 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)
[2022-12-13 18:04:18,147 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:04:18,147 INFO  L93              Difference]: Finished difference Result 817677 states and 833790 transitions.
[2022-12-13 18:04:18,147 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:04:18,148 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 743.3333333333334) internal successors, (2230), 3 states have internal predecessors, (2230), 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 2874
[2022-12-13 18:04:18,149 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:04:18,676 INFO  L225             Difference]: With dead ends: 817677
[2022-12-13 18:04:18,676 INFO  L226             Difference]: Without dead ends: 407986
[2022-12-13 18:04:18,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2879 GetRequests, 2873 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:04:18,852 INFO  L413           NwaCegarLoop]: 2583 mSDtfsCounter, 1962 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 4453 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 5008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 4453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 18:04:18,852 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 2834 Invalid, 5008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 4453 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 18:04:19,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 407986 states.
[2022-12-13 18:04:22,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 407986 to 394398.
[2022-12-13 18:04:22,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 394398 states, 394397 states have (on average 1.0143231312611405) internal successors, (400046), 394397 states have internal predecessors, (400046), 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)
[2022-12-13 18:04:23,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 394398 states to 394398 states and 400046 transitions.
[2022-12-13 18:04:23,117 INFO  L78                 Accepts]: Start accepts. Automaton has 394398 states and 400046 transitions. Word has length 2874
[2022-12-13 18:04:23,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:04:23,118 INFO  L495      AbstractCegarLoop]: Abstraction has 394398 states and 400046 transitions.
[2022-12-13 18:04:23,119 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 743.3333333333334) internal successors, (2230), 3 states have internal predecessors, (2230), 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)
[2022-12-13 18:04:23,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 394398 states and 400046 transitions.
[2022-12-13 18:04:23,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3195
[2022-12-13 18:04:23,563 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:04:23,564 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:04:23,571 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 18:04:23,765 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2022-12-13 18:04:23,766 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:04:23,767 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:04:23,769 INFO  L85        PathProgramCache]: Analyzing trace with hash 135448326, now seen corresponding path program 1 times
[2022-12-13 18:04:23,769 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:04:23,769 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711614214]
[2022-12-13 18:04:23,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:04:23,771 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:04:24,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:04:33,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 2139 backedges. 1556 proven. 17 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked.
[2022-12-13 18:04:33,557 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:04:33,557 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711614214]
[2022-12-13 18:04:33,558 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711614214] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:04:33,558 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886920840]
[2022-12-13 18:04:33,558 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:04:33,558 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:04:33,559 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:04:33,559 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:04:33,560 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-12-13 18:04:34,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:04:34,380 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3545 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:04:34,403 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:04:34,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 2139 backedges. 1957 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked.
[2022-12-13 18:04:34,640 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:04:34,640 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886920840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:04:34,640 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:04:34,641 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-12-13 18:04:34,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425861596]
[2022-12-13 18:04:34,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:04:34,643 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:04:34,643 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:04:34,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:04:34,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:04:34,646 INFO  L87              Difference]: Start difference. First operand 394398 states and 400046 transitions. Second operand  has 3 states, 3 states have (on average 1012.6666666666666) internal successors, (3038), 3 states have internal predecessors, (3038), 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)
[2022-12-13 18:04:40,246 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:04:40,246 INFO  L93              Difference]: Finished difference Result 872059 states and 884894 transitions.
[2022-12-13 18:04:40,247 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:04:40,248 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1012.6666666666666) internal successors, (3038), 3 states have internal predecessors, (3038), 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 3194
[2022-12-13 18:04:40,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:04:40,919 INFO  L225             Difference]: With dead ends: 872059
[2022-12-13 18:04:40,919 INFO  L226             Difference]: Without dead ends: 477655
[2022-12-13 18:04:40,997 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3198 GetRequests, 3193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:04:40,998 INFO  L413           NwaCegarLoop]: 2941 mSDtfsCounter, 1568 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 18:04:40,998 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 3125 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 18:04:41,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 477655 states.
[2022-12-13 18:04:44,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 477655 to 467406.
[2022-12-13 18:04:44,975 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 467406 states, 467405 states have (on average 1.0128796225971053) internal successors, (473425), 467405 states have internal predecessors, (473425), 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)
[2022-12-13 18:04:45,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 467406 states to 467406 states and 473425 transitions.
[2022-12-13 18:04:45,726 INFO  L78                 Accepts]: Start accepts. Automaton has 467406 states and 473425 transitions. Word has length 3194
[2022-12-13 18:04:45,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:04:45,727 INFO  L495      AbstractCegarLoop]: Abstraction has 467406 states and 473425 transitions.
[2022-12-13 18:04:45,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1012.6666666666666) internal successors, (3038), 3 states have internal predecessors, (3038), 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)
[2022-12-13 18:04:45,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 467406 states and 473425 transitions.
[2022-12-13 18:04:46,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3203
[2022-12-13 18:04:46,115 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:04:46,116 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:04:46,123 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-12-13 18:04:46,316 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2022-12-13 18:04:46,317 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:04:46,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:04:46,318 INFO  L85        PathProgramCache]: Analyzing trace with hash -1285787010, now seen corresponding path program 1 times
[2022-12-13 18:04:46,318 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:04:46,318 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084026132]
[2022-12-13 18:04:46,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:04:46,318 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:04:46,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:04:53,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 4337 backedges. 3568 proven. 0 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked.
[2022-12-13 18:04:53,858 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:04:53,858 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084026132]
[2022-12-13 18:04:53,858 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084026132] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:04:53,859 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:04:53,859 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-12-13 18:04:53,860 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865324913]
[2022-12-13 18:04:53,860 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:04:53,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-12-13 18:04:53,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:04:53,866 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-12-13 18:04:53,866 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:04:53,866 INFO  L87              Difference]: Start difference. First operand 467406 states and 473425 transitions. Second operand  has 8 states, 8 states have (on average 329.5) internal successors, (2636), 7 states have internal predecessors, (2636), 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)
[2022-12-13 18:05:15,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:05:15,075 INFO  L93              Difference]: Finished difference Result 1165688 states and 1180401 transitions.
[2022-12-13 18:05:15,075 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2022-12-13 18:05:15,075 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 329.5) internal successors, (2636), 7 states have internal predecessors, (2636), 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 3202
[2022-12-13 18:05:15,076 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:05:15,836 INFO  L225             Difference]: With dead ends: 1165688
[2022-12-13 18:05:15,836 INFO  L226             Difference]: Without dead ends: 699982
[2022-12-13 18:05:15,955 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420
[2022-12-13 18:05:15,955 INFO  L413           NwaCegarLoop]: 841 mSDtfsCounter, 15768 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 34221 mSolverCounterSat, 1789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15768 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 36010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1789 IncrementalHoareTripleChecker+Valid, 34221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time
[2022-12-13 18:05:15,955 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15768 Valid, 2877 Invalid, 36010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1789 Valid, 34221 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time]
[2022-12-13 18:05:16,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 699982 states.
[2022-12-13 18:05:21,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 699982 to 467400.
[2022-12-13 18:05:21,528 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 467400 states, 467399 states have (on average 1.0128562534365713) internal successors, (473408), 467399 states have internal predecessors, (473408), 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)
[2022-12-13 18:05:21,960 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 467400 states to 467400 states and 473408 transitions.
[2022-12-13 18:05:21,960 INFO  L78                 Accepts]: Start accepts. Automaton has 467400 states and 473408 transitions. Word has length 3202
[2022-12-13 18:05:21,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:05:21,961 INFO  L495      AbstractCegarLoop]: Abstraction has 467400 states and 473408 transitions.
[2022-12-13 18:05:21,961 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 329.5) internal successors, (2636), 7 states have internal predecessors, (2636), 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)
[2022-12-13 18:05:21,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 467400 states and 473408 transitions.
[2022-12-13 18:05:22,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3248
[2022-12-13 18:05:22,452 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:05:22,453 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:05:22,453 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-12-13 18:05:22,453 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:05:22,453 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:05:22,454 INFO  L85        PathProgramCache]: Analyzing trace with hash 1149142113, now seen corresponding path program 1 times
[2022-12-13 18:05:22,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:05:22,454 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788158936]
[2022-12-13 18:05:22,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:05:22,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:05:22,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:05:30,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 4372 backedges. 2983 proven. 4 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked.
[2022-12-13 18:05:30,279 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:05:30,279 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788158936]
[2022-12-13 18:05:30,279 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788158936] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:05:30,279 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312746794]
[2022-12-13 18:05:30,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:05:30,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:05:30,280 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:05:30,281 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:05:30,281 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-12-13 18:05:31,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:05:31,051 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3704 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:05:31,069 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:05:31,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 4372 backedges. 1590 proven. 0 refuted. 0 times theorem prover too weak. 2782 trivial. 0 not checked.
[2022-12-13 18:05:31,172 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:05:31,173 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312746794] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:05:31,173 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:05:31,173 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:05:31,173 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464812847]
[2022-12-13 18:05:31,173 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:05:31,175 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:05:31,175 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:05:31,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:05:31,176 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:05:31,177 INFO  L87              Difference]: Start difference. First operand 467400 states and 473408 transitions. Second operand  has 3 states, 3 states have (on average 730.6666666666666) internal successors, (2192), 3 states have internal predecessors, (2192), 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)
[2022-12-13 18:05:36,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:05:36,559 INFO  L93              Difference]: Finished difference Result 943347 states and 955408 transitions.
[2022-12-13 18:05:36,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:05:36,560 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 730.6666666666666) internal successors, (2192), 3 states have internal predecessors, (2192), 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 3247
[2022-12-13 18:05:36,561 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:05:37,124 INFO  L225             Difference]: With dead ends: 943347
[2022-12-13 18:05:37,124 INFO  L226             Difference]: Without dead ends: 477647
[2022-12-13 18:05:37,264 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3252 GetRequests, 3246 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:05:37,265 INFO  L413           NwaCegarLoop]: 569 mSDtfsCounter, 2077 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2022-12-13 18:05:37,265 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 616 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 4404 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2022-12-13 18:05:37,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 477647 states.
[2022-12-13 18:05:41,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 477647 to 465702.
[2022-12-13 18:05:41,346 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 465702 states, 465701 states have (on average 1.0126476000695726) internal successors, (471591), 465701 states have internal predecessors, (471591), 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)
[2022-12-13 18:05:42,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 465702 states to 465702 states and 471591 transitions.
[2022-12-13 18:05:42,007 INFO  L78                 Accepts]: Start accepts. Automaton has 465702 states and 471591 transitions. Word has length 3247
[2022-12-13 18:05:42,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:05:42,008 INFO  L495      AbstractCegarLoop]: Abstraction has 465702 states and 471591 transitions.
[2022-12-13 18:05:42,009 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 730.6666666666666) internal successors, (2192), 3 states have internal predecessors, (2192), 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)
[2022-12-13 18:05:42,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 465702 states and 471591 transitions.
[2022-12-13 18:05:42,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3423
[2022-12-13 18:05:42,525 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:05:42,526 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:05:42,532 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-12-13 18:05:42,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:05:42,728 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:05:42,729 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:05:42,731 INFO  L85        PathProgramCache]: Analyzing trace with hash 1754348758, now seen corresponding path program 1 times
[2022-12-13 18:05:42,731 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:05:42,731 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154468210]
[2022-12-13 18:05:42,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:05:42,733 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:05:43,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:05:50,758 INFO  L134       CoverageAnalysis]: Checked inductivity of 5364 backedges. 3409 proven. 4 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked.
[2022-12-13 18:05:50,758 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:05:50,759 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154468210]
[2022-12-13 18:05:50,759 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154468210] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:05:50,759 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695130895]
[2022-12-13 18:05:50,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:05:50,759 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:05:50,759 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:05:50,760 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:05:50,761 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-12-13 18:05:51,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:05:51,548 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3838 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:05:51,569 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:05:51,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 5364 backedges. 2780 proven. 0 refuted. 0 times theorem prover too weak. 2584 trivial. 0 not checked.
[2022-12-13 18:05:51,800 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:05:51,800 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [695130895] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:05:51,800 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:05:51,801 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:05:51,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622708881]
[2022-12-13 18:05:51,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:05:51,802 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:05:51,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:05:51,803 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:05:51,804 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:05:51,804 INFO  L87              Difference]: Start difference. First operand 465702 states and 471591 transitions. Second operand  has 3 states, 3 states have (on average 798.3333333333334) internal successors, (2395), 3 states have internal predecessors, (2395), 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)
[2022-12-13 18:05:57,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:05:57,693 INFO  L93              Difference]: Finished difference Result 929710 states and 941486 transitions.
[2022-12-13 18:05:57,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:05:57,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 798.3333333333334) internal successors, (2395), 3 states have internal predecessors, (2395), 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 3422
[2022-12-13 18:05:57,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:05:58,285 INFO  L225             Difference]: With dead ends: 929710
[2022-12-13 18:05:58,285 INFO  L226             Difference]: Without dead ends: 465708
[2022-12-13 18:05:58,470 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3427 GetRequests, 3421 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:05:58,470 INFO  L413           NwaCegarLoop]: 2730 mSDtfsCounter, 1756 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 4799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 18:05:58,471 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2899 Invalid, 4799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 4289 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 18:05:58,871 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 465708 states.
[2022-12-13 18:06:02,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 465708 to 453814.
[2022-12-13 18:06:02,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 453814 states, 453813 states have (on average 1.0113460830782723) internal successors, (458962), 453813 states have internal predecessors, (458962), 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)
[2022-12-13 18:06:03,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 453814 states to 453814 states and 458962 transitions.
[2022-12-13 18:06:03,344 INFO  L78                 Accepts]: Start accepts. Automaton has 453814 states and 458962 transitions. Word has length 3422
[2022-12-13 18:06:03,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:06:03,345 INFO  L495      AbstractCegarLoop]: Abstraction has 453814 states and 458962 transitions.
[2022-12-13 18:06:03,346 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 798.3333333333334) internal successors, (2395), 3 states have internal predecessors, (2395), 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)
[2022-12-13 18:06:03,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 453814 states and 458962 transitions.
[2022-12-13 18:06:03,647 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3532
[2022-12-13 18:06:03,647 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:06:03,648 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:06:03,654 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-12-13 18:06:03,849 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:06:03,850 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:06:03,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:06:03,853 INFO  L85        PathProgramCache]: Analyzing trace with hash 1809400256, now seen corresponding path program 1 times
[2022-12-13 18:06:03,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:06:03,854 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703756204]
[2022-12-13 18:06:03,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:06:03,855 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:06:04,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:06:12,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 5755 backedges. 3545 proven. 4 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked.
[2022-12-13 18:06:12,019 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:06:12,019 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703756204]
[2022-12-13 18:06:12,020 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703756204] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:06:12,020 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791023942]
[2022-12-13 18:06:12,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:06:12,020 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:06:12,020 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:06:12,021 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:06:12,022 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-12-13 18:06:13,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:06:13,020 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:06:13,039 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:06:14,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 5755 backedges. 1836 proven. 0 refuted. 0 times theorem prover too weak. 3919 trivial. 0 not checked.
[2022-12-13 18:06:14,239 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:06:14,239 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [791023942] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:06:14,239 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:06:14,239 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:06:14,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260817659]
[2022-12-13 18:06:14,239 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:06:14,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:06:14,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:06:14,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:06:14,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:06:14,242 INFO  L87              Difference]: Start difference. First operand 453814 states and 458962 transitions. Second operand  has 3 states, 3 states have (on average 730.0) internal successors, (2190), 3 states have internal predecessors, (2190), 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)
[2022-12-13 18:06:19,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:06:19,923 INFO  L93              Difference]: Finished difference Result 936575 states and 947070 transitions.
[2022-12-13 18:06:19,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:06:19,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 730.0) internal successors, (2190), 3 states have internal predecessors, (2190), 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 3531
[2022-12-13 18:06:19,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:06:20,558 INFO  L225             Difference]: With dead ends: 936575
[2022-12-13 18:06:20,558 INFO  L226             Difference]: Without dead ends: 482747
[2022-12-13 18:06:21,002 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3536 GetRequests, 3530 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:06:21,003 INFO  L413           NwaCegarLoop]: 1090 mSDtfsCounter, 195 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4731 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 5284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 4731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 18:06:21,003 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1250 Invalid, 5284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 4731 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 18:06:21,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 482747 states.
[2022-12-13 18:06:25,031 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 482747 to 462292.
[2022-12-13 18:06:25,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 462292 states, 462291 states have (on average 1.0104155174987184) internal successors, (467106), 462291 states have internal predecessors, (467106), 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)
[2022-12-13 18:06:25,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 462292 states to 462292 states and 467106 transitions.
[2022-12-13 18:06:25,854 INFO  L78                 Accepts]: Start accepts. Automaton has 462292 states and 467106 transitions. Word has length 3531
[2022-12-13 18:06:25,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:06:25,855 INFO  L495      AbstractCegarLoop]: Abstraction has 462292 states and 467106 transitions.
[2022-12-13 18:06:25,855 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 730.0) internal successors, (2190), 3 states have internal predecessors, (2190), 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)
[2022-12-13 18:06:25,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 462292 states and 467106 transitions.
[2022-12-13 18:06:26,358 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3574
[2022-12-13 18:06:26,358 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:06:26,361 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:06:26,367 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-12-13 18:06:26,561 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2022-12-13 18:06:26,563 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:06:26,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:06:26,570 INFO  L85        PathProgramCache]: Analyzing trace with hash -1376128660, now seen corresponding path program 1 times
[2022-12-13 18:06:26,571 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:06:26,571 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522103077]
[2022-12-13 18:06:26,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:06:26,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:06:27,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:06:35,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 6105 backedges. 3698 proven. 4 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked.
[2022-12-13 18:06:35,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:06:35,243 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522103077]
[2022-12-13 18:06:35,243 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522103077] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:06:35,244 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606100401]
[2022-12-13 18:06:35,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:06:35,244 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:06:35,244 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:06:35,245 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:06:35,246 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-12-13 18:06:36,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:06:36,155 INFO  L263         TraceCheckSpWp]: Trace formula consists of 4027 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:06:36,172 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:06:36,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 6105 backedges. 4075 proven. 0 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked.
[2022-12-13 18:06:36,421 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:06:36,421 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606100401] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:06:36,421 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:06:36,422 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:06:36,422 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520033369]
[2022-12-13 18:06:36,422 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:06:36,423 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:06:36,423 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:06:36,425 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:06:36,425 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:06:36,425 INFO  L87              Difference]: Start difference. First operand 462292 states and 467106 transitions. Second operand  has 3 states, 3 states have (on average 811.6666666666666) internal successors, (2435), 3 states have internal predecessors, (2435), 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)
[2022-12-13 18:06:42,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:06:42,245 INFO  L93              Difference]: Finished difference Result 902473 states and 911771 transitions.
[2022-12-13 18:06:42,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:06:42,246 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 811.6666666666666) internal successors, (2435), 3 states have internal predecessors, (2435), 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 3573
[2022-12-13 18:06:42,247 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:06:42,885 INFO  L225             Difference]: With dead ends: 902473
[2022-12-13 18:06:42,885 INFO  L226             Difference]: Without dead ends: 433354
[2022-12-13 18:06:43,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3578 GetRequests, 3572 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:06:43,018 INFO  L413           NwaCegarLoop]: 2526 mSDtfsCounter, 1689 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4293 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 5045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 4293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 18:06:43,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 2639 Invalid, 5045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 4293 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 18:06:43,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 433354 states.
[2022-12-13 18:06:46,624 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 433354 to 424846.
[2022-12-13 18:06:46,786 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 424846 states, 424845 states have (on average 1.0068660334945687) internal successors, (427762), 424845 states have internal predecessors, (427762), 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)
[2022-12-13 18:06:47,500 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 424846 states to 424846 states and 427762 transitions.
[2022-12-13 18:06:47,500 INFO  L78                 Accepts]: Start accepts. Automaton has 424846 states and 427762 transitions. Word has length 3573
[2022-12-13 18:06:47,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:06:47,501 INFO  L495      AbstractCegarLoop]: Abstraction has 424846 states and 427762 transitions.
[2022-12-13 18:06:47,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 811.6666666666666) internal successors, (2435), 3 states have internal predecessors, (2435), 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)
[2022-12-13 18:06:47,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 424846 states and 427762 transitions.
[2022-12-13 18:06:47,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4418
[2022-12-13 18:06:47,844 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:06:47,845 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:06:47,853 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2022-12-13 18:06:48,046 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2022-12-13 18:06:48,046 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:06:48,046 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:06:48,047 INFO  L85        PathProgramCache]: Analyzing trace with hash -942143691, now seen corresponding path program 1 times
[2022-12-13 18:06:48,047 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:06:48,047 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292450483]
[2022-12-13 18:06:48,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:06:48,048 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:06:48,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:06:55,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 5620 backedges. 3363 proven. 0 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked.
[2022-12-13 18:06:55,954 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:06:55,954 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292450483]
[2022-12-13 18:06:55,955 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292450483] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:06:55,955 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:06:55,956 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:06:55,956 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209843236]
[2022-12-13 18:06:55,956 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:06:55,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:06:55,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:06:55,963 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:06:55,963 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:06:55,963 INFO  L87              Difference]: Start difference. First operand 424846 states and 427762 transitions. Second operand  has 3 states, 3 states have (on average 939.0) internal successors, (2817), 3 states have internal predecessors, (2817), 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)
[2022-12-13 18:07:01,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:07:01,500 INFO  L93              Difference]: Finished difference Result 846271 states and 852055 transitions.
[2022-12-13 18:07:01,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:07:01,501 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 939.0) internal successors, (2817), 3 states have internal predecessors, (2817), 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 4417
[2022-12-13 18:07:01,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:07:01,999 INFO  L225             Difference]: With dead ends: 846271
[2022-12-13 18:07:01,999 INFO  L226             Difference]: Without dead ends: 421426
[2022-12-13 18:07:02,328 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
[2022-12-13 18:07:02,329 INFO  L413           NwaCegarLoop]: 2608 mSDtfsCounter, 1655 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4305 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 4639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 4305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 18:07:02,329 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2737 Invalid, 4639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 4305 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 18:07:02,606 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 421426 states.
[2022-12-13 18:07:05,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 421426 to 401035.
[2022-12-13 18:07:06,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 401035 states, 401034 states have (on average 1.0059571008941885) internal successors, (403423), 401034 states have internal predecessors, (403423), 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)
[2022-12-13 18:07:06,709 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 401035 states to 401035 states and 403423 transitions.
[2022-12-13 18:07:06,710 INFO  L78                 Accepts]: Start accepts. Automaton has 401035 states and 403423 transitions. Word has length 4417
[2022-12-13 18:07:06,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:07:06,710 INFO  L495      AbstractCegarLoop]: Abstraction has 401035 states and 403423 transitions.
[2022-12-13 18:07:06,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 939.0) internal successors, (2817), 3 states have internal predecessors, (2817), 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)
[2022-12-13 18:07:06,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 401035 states and 403423 transitions.
[2022-12-13 18:07:07,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4684
[2022-12-13 18:07:07,301 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:07:07,303 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:07:07,303 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-12-13 18:07:07,303 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:07:07,303 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:07:07,304 INFO  L85        PathProgramCache]: Analyzing trace with hash 1498845289, now seen corresponding path program 1 times
[2022-12-13 18:07:07,304 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:07:07,304 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521828152]
[2022-12-13 18:07:07,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:07:07,304 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:07:07,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:07:19,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 7769 backedges. 3879 proven. 4 refuted. 0 times theorem prover too weak. 3886 trivial. 0 not checked.
[2022-12-13 18:07:19,470 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:07:19,470 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521828152]
[2022-12-13 18:07:19,470 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521828152] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:07:19,470 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382756288]
[2022-12-13 18:07:19,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:07:19,471 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:07:19,471 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:07:19,471 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:07:19,472 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-12-13 18:07:20,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:07:20,832 INFO  L263         TraceCheckSpWp]: Trace formula consists of 5136 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:07:20,860 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:07:21,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 7769 backedges. 5277 proven. 0 refuted. 0 times theorem prover too weak. 2492 trivial. 0 not checked.
[2022-12-13 18:07:21,490 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:07:21,490 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [382756288] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:07:21,490 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:07:21,493 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:07:21,493 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994485240]
[2022-12-13 18:07:21,493 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:07:21,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:07:21,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:07:21,501 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:07:21,501 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:07:21,501 INFO  L87              Difference]: Start difference. First operand 401035 states and 403423 transitions. Second operand  has 3 states, 3 states have (on average 1148.6666666666667) internal successors, (3446), 3 states have internal predecessors, (3446), 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)
[2022-12-13 18:07:26,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:07:26,847 INFO  L93              Difference]: Finished difference Result 829216 states and 834209 transitions.
[2022-12-13 18:07:26,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:07:26,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1148.6666666666667) internal successors, (3446), 3 states have internal predecessors, (3446), 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 4683
[2022-12-13 18:07:26,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:07:27,399 INFO  L225             Difference]: With dead ends: 829216
[2022-12-13 18:07:27,399 INFO  L226             Difference]: Without dead ends: 429880
[2022-12-13 18:07:27,580 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4688 GetRequests, 4682 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:07:27,581 INFO  L413           NwaCegarLoop]: 2529 mSDtfsCounter, 993 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4190 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2022-12-13 18:07:27,581 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2659 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4190 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2022-12-13 18:07:28,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 429880 states.
[2022-12-13 18:07:31,386 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 429880 to 417982.
[2022-12-13 18:07:31,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 417982 states, 417981 states have (on average 1.005588770781447) internal successors, (420317), 417981 states have internal predecessors, (420317), 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)
[2022-12-13 18:07:32,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 417982 states to 417982 states and 420317 transitions.
[2022-12-13 18:07:32,012 INFO  L78                 Accepts]: Start accepts. Automaton has 417982 states and 420317 transitions. Word has length 4683
[2022-12-13 18:07:32,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:07:32,015 INFO  L495      AbstractCegarLoop]: Abstraction has 417982 states and 420317 transitions.
[2022-12-13 18:07:32,015 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1148.6666666666667) internal successors, (3446), 3 states have internal predecessors, (3446), 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)
[2022-12-13 18:07:32,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 417982 states and 420317 transitions.
[2022-12-13 18:07:32,616 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4865
[2022-12-13 18:07:32,616 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:07:32,617 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:07:32,626 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2022-12-13 18:07:32,818 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2022-12-13 18:07:32,820 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:07:32,820 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:07:32,822 INFO  L85        PathProgramCache]: Analyzing trace with hash 1608457231, now seen corresponding path program 1 times
[2022-12-13 18:07:32,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:07:32,822 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394301387]
[2022-12-13 18:07:32,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:07:32,824 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:07:33,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:07:50,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 7148 backedges. 4210 proven. 467 refuted. 0 times theorem prover too weak. 2471 trivial. 0 not checked.
[2022-12-13 18:07:50,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:07:50,310 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394301387]
[2022-12-13 18:07:50,310 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394301387] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:07:50,310 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850121538]
[2022-12-13 18:07:50,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:07:50,310 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:07:50,310 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:07:50,311 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:07:50,312 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-12-13 18:07:51,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:07:51,716 INFO  L263         TraceCheckSpWp]: Trace formula consists of 5210 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:07:51,741 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:07:51,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 7148 backedges. 4532 proven. 0 refuted. 0 times theorem prover too weak. 2616 trivial. 0 not checked.
[2022-12-13 18:07:51,863 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:07:51,863 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [850121538] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:07:51,863 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:07:51,864 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-12-13 18:07:51,864 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10181299]
[2022-12-13 18:07:51,864 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:07:51,865 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:07:51,865 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:07:51,867 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:07:51,867 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:07:51,867 INFO  L87              Difference]: Start difference. First operand 417982 states and 420317 transitions. Second operand  has 3 states, 3 states have (on average 968.3333333333334) internal successors, (2905), 3 states have internal predecessors, (2905), 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)
[2022-12-13 18:07:56,805 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:07:56,805 INFO  L93              Difference]: Finished difference Result 832568 states and 837215 transitions.
[2022-12-13 18:07:56,806 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:07:56,806 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 968.3333333333334) internal successors, (2905), 3 states have internal predecessors, (2905), 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 4864
[2022-12-13 18:07:56,807 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:07:57,313 INFO  L225             Difference]: With dead ends: 832568
[2022-12-13 18:07:57,314 INFO  L226             Difference]: Without dead ends: 416286
[2022-12-13 18:07:57,480 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4868 GetRequests, 4863 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:07:57,480 INFO  L413           NwaCegarLoop]: 2431 mSDtfsCounter, 1709 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4133 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 4479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 4133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-12-13 18:07:57,480 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 2551 Invalid, 4479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 4133 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-12-13 18:07:57,834 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 416286 states.
[2022-12-13 18:08:00,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 416286 to 409491.
[2022-12-13 18:08:01,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 409491 states, 409490 states have (on average 1.0041051063518034) internal successors, (411171), 409490 states have internal predecessors, (411171), 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)
[2022-12-13 18:08:01,682 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 409491 states to 409491 states and 411171 transitions.
[2022-12-13 18:08:01,682 INFO  L78                 Accepts]: Start accepts. Automaton has 409491 states and 411171 transitions. Word has length 4864
[2022-12-13 18:08:01,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:08:01,683 INFO  L495      AbstractCegarLoop]: Abstraction has 409491 states and 411171 transitions.
[2022-12-13 18:08:01,684 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 968.3333333333334) internal successors, (2905), 3 states have internal predecessors, (2905), 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)
[2022-12-13 18:08:01,684 INFO  L276                IsEmpty]: Start isEmpty. Operand 409491 states and 411171 transitions.
[2022-12-13 18:08:02,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5609
[2022-12-13 18:08:02,090 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:08:02,091 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:08:02,099 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2022-12-13 18:08:02,292 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2022-12-13 18:08:02,292 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:08:02,293 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:08:02,293 INFO  L85        PathProgramCache]: Analyzing trace with hash -162626679, now seen corresponding path program 1 times
[2022-12-13 18:08:02,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:08:02,293 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418194780]
[2022-12-13 18:08:02,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:08:02,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:08:03,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:08:18,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 11579 backedges. 4931 proven. 4 refuted. 0 times theorem prover too weak. 6644 trivial. 0 not checked.
[2022-12-13 18:08:18,872 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:08:18,873 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418194780]
[2022-12-13 18:08:18,873 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418194780] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:08:18,873 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25632449]
[2022-12-13 18:08:18,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:08:18,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:08:18,873 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:08:18,874 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:08:18,875 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-12-13 18:08:20,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:08:20,236 INFO  L263         TraceCheckSpWp]: Trace formula consists of 6118 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:08:20,266 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:08:20,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 11579 backedges. 7655 proven. 0 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked.
[2022-12-13 18:08:20,512 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:08:20,512 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [25632449] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:08:20,512 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:08:20,513 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:08:20,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265338483]
[2022-12-13 18:08:20,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:08:20,515 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:08:20,515 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:08:20,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:08:20,516 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:08:20,517 INFO  L87              Difference]: Start difference. First operand 409491 states and 411171 transitions. Second operand  has 3 states, 3 states have (on average 998.6666666666666) internal successors, (2996), 3 states have internal predecessors, (2996), 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)
[2022-12-13 18:08:25,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:08:25,996 INFO  L93              Difference]: Finished difference Result 854669 states and 858165 transitions.
[2022-12-13 18:08:25,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:08:25,997 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 998.6666666666666) internal successors, (2996), 3 states have internal predecessors, (2996), 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 5608
[2022-12-13 18:08:25,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:08:26,510 INFO  L225             Difference]: With dead ends: 854669
[2022-12-13 18:08:26,510 INFO  L226             Difference]: Without dead ends: 446878
[2022-12-13 18:08:26,683 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5613 GetRequests, 5607 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:08:26,684 INFO  L413           NwaCegarLoop]: 377 mSDtfsCounter, 1624 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 4759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2022-12-13 18:08:26,684 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 408 Invalid, 4759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2022-12-13 18:08:27,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 446878 states.
[2022-12-13 18:08:30,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 446878 to 414584.
[2022-12-13 18:08:30,758 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 414584 states, 414583 states have (on average 1.004032968066708) internal successors, (416255), 414583 states have internal predecessors, (416255), 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)
[2022-12-13 18:08:31,183 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 414584 states to 414584 states and 416255 transitions.
[2022-12-13 18:08:31,183 INFO  L78                 Accepts]: Start accepts. Automaton has 414584 states and 416255 transitions. Word has length 5608
[2022-12-13 18:08:31,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:08:31,185 INFO  L495      AbstractCegarLoop]: Abstraction has 414584 states and 416255 transitions.
[2022-12-13 18:08:31,185 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 998.6666666666666) internal successors, (2996), 3 states have internal predecessors, (2996), 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)
[2022-12-13 18:08:31,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 414584 states and 416255 transitions.
[2022-12-13 18:08:31,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5678
[2022-12-13 18:08:31,798 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:08:31,799 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:08:31,807 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2022-12-13 18:08:32,000 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2022-12-13 18:08:32,003 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:08:32,004 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:08:32,006 INFO  L85        PathProgramCache]: Analyzing trace with hash -1832287017, now seen corresponding path program 1 times
[2022-12-13 18:08:32,006 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:08:32,006 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598458564]
[2022-12-13 18:08:32,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:08:32,008 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:08:32,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:08:43,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 10932 backedges. 7379 proven. 0 refuted. 0 times theorem prover too weak. 3553 trivial. 0 not checked.
[2022-12-13 18:08:43,763 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:08:43,764 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598458564]
[2022-12-13 18:08:43,764 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598458564] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:08:43,764 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 18:08:43,765 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 18:08:43,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150447350]
[2022-12-13 18:08:43,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:08:43,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:08:43,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:08:43,771 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:08:43,771 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 18:08:43,771 INFO  L87              Difference]: Start difference. First operand 414584 states and 416255 transitions. Second operand  has 3 states, 3 states have (on average 1039.6666666666667) internal successors, (3119), 3 states have internal predecessors, (3119), 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)
[2022-12-13 18:08:49,452 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:08:49,452 INFO  L93              Difference]: Finished difference Result 841057 states and 844443 transitions.
[2022-12-13 18:08:49,453 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:08:49,453 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1039.6666666666667) internal successors, (3119), 3 states have internal predecessors, (3119), 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 5677
[2022-12-13 18:08:49,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:08:49,968 INFO  L225             Difference]: With dead ends: 841057
[2022-12-13 18:08:49,968 INFO  L226             Difference]: Without dead ends: 428173
[2022-12-13 18:08:50,156 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
[2022-12-13 18:08:50,156 INFO  L413           NwaCegarLoop]: 2555 mSDtfsCounter, 1408 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4208 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 18:08:50,157 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2678 Invalid, 4267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4208 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 18:08:50,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 428173 states.
[2022-12-13 18:08:53,931 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 428173 to 412876.
[2022-12-13 18:08:54,041 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 412876 states, 412875 states have (on average 1.003964880411747) internal successors, (414512), 412875 states have internal predecessors, (414512), 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)
[2022-12-13 18:08:54,459 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 412876 states to 412876 states and 414512 transitions.
[2022-12-13 18:08:54,459 INFO  L78                 Accepts]: Start accepts. Automaton has 412876 states and 414512 transitions. Word has length 5677
[2022-12-13 18:08:54,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:08:54,460 INFO  L495      AbstractCegarLoop]: Abstraction has 412876 states and 414512 transitions.
[2022-12-13 18:08:54,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1039.6666666666667) internal successors, (3119), 3 states have internal predecessors, (3119), 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)
[2022-12-13 18:08:54,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 412876 states and 414512 transitions.
[2022-12-13 18:08:55,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6575
[2022-12-13 18:08:55,212 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:08:55,213 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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[2022-12-13 18:08:55,213 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-12-13 18:08:55,214 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:08:55,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:08:55,214 INFO  L85        PathProgramCache]: Analyzing trace with hash 554327964, now seen corresponding path program 1 times
[2022-12-13 18:08:55,214 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:08:55,214 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182740819]
[2022-12-13 18:08:55,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:08:55,215 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:08:55,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:09:17,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 15268 backedges. 5366 proven. 4 refuted. 0 times theorem prover too weak. 9898 trivial. 0 not checked.
[2022-12-13 18:09:17,990 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:09:17,990 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182740819]
[2022-12-13 18:09:17,991 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182740819] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:09:17,991 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23775772]
[2022-12-13 18:09:17,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:09:17,992 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:09:17,992 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:09:17,993 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:09:17,994 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-12-13 18:09:19,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:09:19,908 INFO  L263         TraceCheckSpWp]: Trace formula consists of 7121 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-12-13 18:09:19,943 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:09:21,015 INFO  L134       CoverageAnalysis]: Checked inductivity of 15268 backedges. 7424 proven. 0 refuted. 0 times theorem prover too weak. 7844 trivial. 0 not checked.
[2022-12-13 18:09:21,015 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:09:21,015 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [23775772] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:09:21,016 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:09:21,017 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 18:09:21,017 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332345016]
[2022-12-13 18:09:21,017 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:09:21,018 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:09:21,018 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:09:21,021 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:09:21,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:09:21,021 INFO  L87              Difference]: Start difference. First operand 412876 states and 414512 transitions. Second operand  has 3 states, 3 states have (on average 1106.6666666666667) internal successors, (3320), 3 states have internal predecessors, (3320), 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)
[2022-12-13 18:09:26,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:09:26,689 INFO  L93              Difference]: Finished difference Result 849543 states and 852896 transitions.
[2022-12-13 18:09:26,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:09:26,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1106.6666666666667) internal successors, (3320), 3 states have internal predecessors, (3320), 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 6574
[2022-12-13 18:09:26,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:09:27,143 INFO  L225             Difference]: With dead ends: 849543
[2022-12-13 18:09:27,143 INFO  L226             Difference]: Without dead ends: 438367
[2022-12-13 18:09:27,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6579 GetRequests, 6573 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-12-13 18:09:27,222 INFO  L413           NwaCegarLoop]: 2497 mSDtfsCounter, 1275 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 4426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 18:09:27,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2615 Invalid, 4426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 18:09:27,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 438367 states.
[2022-12-13 18:09:30,885 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 438367 to 412872.
[2022-12-13 18:09:31,038 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 412872 states, 412871 states have (on average 1.0038849907113845) internal successors, (414475), 412871 states have internal predecessors, (414475), 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)
[2022-12-13 18:09:31,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 412872 states to 412872 states and 414475 transitions.
[2022-12-13 18:09:31,642 INFO  L78                 Accepts]: Start accepts. Automaton has 412872 states and 414475 transitions. Word has length 6574
[2022-12-13 18:09:31,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:09:31,643 INFO  L495      AbstractCegarLoop]: Abstraction has 412872 states and 414475 transitions.
[2022-12-13 18:09:31,643 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1106.6666666666667) internal successors, (3320), 3 states have internal predecessors, (3320), 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)
[2022-12-13 18:09:31,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 412872 states and 414475 transitions.
[2022-12-13 18:09:32,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11181
[2022-12-13 18:09:32,684 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:09:32,685 INFO  L195           NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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[2022-12-13 18:09:32,695 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-12-13 18:09:32,886 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2022-12-13 18:09:32,887 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:09:32,888 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:09:32,891 INFO  L85        PathProgramCache]: Analyzing trace with hash 1525454375, now seen corresponding path program 1 times
[2022-12-13 18:09:32,891 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:09:32,891 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971035067]
[2022-12-13 18:09:32,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:09:32,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:09:33,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:10:41,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 40018 backedges. 15063 proven. 1097 refuted. 0 times theorem prover too weak. 23858 trivial. 0 not checked.
[2022-12-13 18:10:41,061 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 18:10:41,061 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971035067]
[2022-12-13 18:10:41,061 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971035067] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 18:10:41,061 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591417835]
[2022-12-13 18:10:41,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:10:41,062 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:10:41,062 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 18:10:41,063 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 18:10:41,064 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-12-13 18:10:43,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 18:10:43,777 INFO  L263         TraceCheckSpWp]: Trace formula consists of 11876 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 18:10:43,842 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 18:10:55,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 40018 backedges. 25717 proven. 0 refuted. 0 times theorem prover too weak. 14301 trivial. 0 not checked.
[2022-12-13 18:10:55,251 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 18:10:55,251 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591417835] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 18:10:55,252 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 18:10:55,253 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-12-13 18:10:55,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813155761]
[2022-12-13 18:10:55,253 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 18:10:55,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 18:10:55,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 18:10:55,257 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 18:10:55,258 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:10:55,258 INFO  L87              Difference]: Start difference. First operand 412872 states and 414475 transitions. Second operand  has 3 states, 3 states have (on average 1550.0) internal successors, (4650), 3 states have internal predecessors, (4650), 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)
[2022-12-13 18:11:00,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 18:11:00,239 INFO  L93              Difference]: Finished difference Result 822339 states and 825532 transitions.
[2022-12-13 18:11:00,240 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 18:11:00,241 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1550.0) internal successors, (4650), 3 states have internal predecessors, (4650), 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 11180
[2022-12-13 18:11:00,246 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 18:11:00,740 INFO  L225             Difference]: With dead ends: 822339
[2022-12-13 18:11:00,740 INFO  L226             Difference]: Without dead ends: 411164
[2022-12-13 18:11:00,915 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11184 GetRequests, 11179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2022-12-13 18:11:00,915 INFO  L413           NwaCegarLoop]: 2418 mSDtfsCounter, 161 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4101 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-12-13 18:11:00,916 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2595 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4101 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-12-13 18:11:01,267 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 411164 states.
[2022-12-13 18:11:04,273 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 411164 to 411164.
[2022-12-13 18:11:04,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411164 states, 411163 states have (on average 1.003713855575526) internal successors, (412690), 411163 states have internal predecessors, (412690), 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)
[2022-12-13 18:11:04,937 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411164 states to 411164 states and 412690 transitions.
[2022-12-13 18:11:04,937 INFO  L78                 Accepts]: Start accepts. Automaton has 411164 states and 412690 transitions. Word has length 11180
[2022-12-13 18:11:04,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 18:11:04,942 INFO  L495      AbstractCegarLoop]: Abstraction has 411164 states and 412690 transitions.
[2022-12-13 18:11:04,943 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1550.0) internal successors, (4650), 3 states have internal predecessors, (4650), 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)
[2022-12-13 18:11:04,943 INFO  L276                IsEmpty]: Start isEmpty. Operand 411164 states and 412690 transitions.
[2022-12-13 18:11:06,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15073
[2022-12-13 18:11:06,396 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 18:11:06,398 INFO  L195           NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 18:11:06,411 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2022-12-13 18:11:06,598 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5197370-30fa-4ae2-94e3-ffd92a7d07ca/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 18:11:06,599 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 18:11:06,600 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 18:11:06,602 INFO  L85        PathProgramCache]: Analyzing trace with hash 490440632, now seen corresponding path program 1 times
[2022-12-13 18:11:06,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 18:11:06,602 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169765608]
[2022-12-13 18:11:06,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 18:11:06,604 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 18:11:08,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat