./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label39.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbec2d2e2fd0210dd0d492bde93304a548ca50a887cc3bd79d5d5e949af06790
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 20:39:19,219 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 20:39:19,221 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 20:39:19,242 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 20:39:19,243 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 20:39:19,244 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 20:39:19,245 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 20:39:19,247 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 20:39:19,248 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 20:39:19,249 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 20:39:19,250 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 20:39:19,251 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 20:39:19,252 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 20:39:19,253 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 20:39:19,254 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 20:39:19,255 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 20:39:19,256 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 20:39:19,257 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 20:39:19,258 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 20:39:19,261 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 20:39:19,262 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 20:39:19,263 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 20:39:19,265 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 20:39:19,265 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 20:39:19,268 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 20:39:19,268 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 20:39:19,269 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 20:39:19,270 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 20:39:19,270 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 20:39:19,271 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 20:39:19,271 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 20:39:19,272 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 20:39:19,272 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 20:39:19,273 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 20:39:19,274 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 20:39:19,274 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 20:39:19,275 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 20:39:19,275 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 20:39:19,275 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 20:39:19,276 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 20:39:19,277 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 20:39:19,277 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 20:39:19,295 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 20:39:19,296 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 20:39:19,296 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 20:39:19,296 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 20:39:19,296 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 20:39:19,297 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 20:39:19,297 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 20:39:19,297 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 20:39:19,297 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 20:39:19,298 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 20:39:19,298 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 20:39:19,299 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 20:39:19,299 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 20:39:19,300 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 20:39:19,300 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 20:39:19,301 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 20:39:19,301 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 20:39:19,301 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbec2d2e2fd0210dd0d492bde93304a548ca50a887cc3bd79d5d5e949af06790
[2021-12-06 20:39:19,490 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 20:39:19,505 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 20:39:19,507 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 20:39:19,508 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 20:39:19,508 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 20:39:19,509 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label39.c
[2021-12-06 20:39:19,553 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/data/1bbcfab57/c9eaa3def53f4607af91c1b94e260a57/FLAG2875fe9d5
[2021-12-06 20:39:20,915 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 20:39:20,916 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/sv-benchmarks/c/eca-rers2012/Problem07_label39.c
[2021-12-06 20:39:21,064 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/data/1bbcfab57/c9eaa3def53f4607af91c1b94e260a57/FLAG2875fe9d5
[2021-12-06 20:39:21,078 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/data/1bbcfab57/c9eaa3def53f4607af91c1b94e260a57
[2021-12-06 20:39:21,079 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 20:39:21,080 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 20:39:21,081 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 20:39:21,081 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 20:39:21,084 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 20:39:21,085 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:39:21" (1/1) ...
[2021-12-06 20:39:21,086 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d4d37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:21, skipping insertion in model container
[2021-12-06 20:39:21,086 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:39:21" (1/1) ...
[2021-12-06 20:39:21,090 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 20:39:21,657 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 20:39:31,506 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/sv-benchmarks/c/eca-rers2012/Problem07_label39.c[2767623,2767636]
[2021-12-06 20:39:31,572 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 20:39:31,578 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 20:39:37,646 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/sv-benchmarks/c/eca-rers2012/Problem07_label39.c[2767623,2767636]
[2021-12-06 20:39:37,661 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 20:39:38,450 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 20:39:38,450 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38 WrapperNode
[2021-12-06 20:39:38,451 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 20:39:38,451 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 20:39:38,451 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 20:39:38,451 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 20:39:38,456 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:38,782 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:40,175 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 20:39:40,176 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 20:39:40,177 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 20:39:40,177 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 20:39:40,177 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 20:39:40,187 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:40,187 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:40,395 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:40,395 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:41,024 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:41,155 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:41,285 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:41,602 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 20:39:41,604 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 20:39:41,604 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 20:39:41,604 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 20:39:41,605 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (1/1) ...
[2021-12-06 20:39:41,611 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 20:39:41,621 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 20:39:41,631 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 20:39:41,633 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3499c184-0d01-43b0-bf82-11470734a5a4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 20:39:41,661 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 20:39:41,661 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 20:39:41,661 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 20:39:41,661 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 20:39:41,762 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 20:39:41,764 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 20:40:05,241 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 20:40:05,287 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 20:40:05,287 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 20:40:05,296 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:40:05 BoogieIcfgContainer
[2021-12-06 20:40:05,296 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 20:40:05,298 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 20:40:05,298 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 20:40:05,300 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 20:40:05,300 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:39:21" (1/3) ...
[2021-12-06 20:40:05,301 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69547240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:40:05, skipping insertion in model container
[2021-12-06 20:40:05,301 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:39:38" (2/3) ...
[2021-12-06 20:40:05,301 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69547240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:40:05, skipping insertion in model container
[2021-12-06 20:40:05,301 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:40:05" (3/3) ...
[2021-12-06 20:40:05,302 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label39.c
[2021-12-06 20:40:05,306 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 20:40:05,306 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 20:40:05,366 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 20:40:05,373 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 20:40:05,374 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 20:40:05,511 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:40:06,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2021-12-06 20:40:06,145 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:40:06,151 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 20:40:06,154 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:40:06,163 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:40:06,169 INFO  L85        PathProgramCache]: Analyzing trace with hash -505384175, now seen corresponding path program 1 times
[2021-12-06 20:40:06,175 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:40:06,176 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142536906]
[2021-12-06 20:40:06,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:40:06,179 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:40:07,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:40:28,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:40:28,602 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:40:28,602 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142536906]
[2021-12-06 20:40:28,603 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142536906] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:40:28,603 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:40:28,606 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:40:28,607 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560598186]
[2021-12-06 20:40:28,608 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:40:28,626 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:40:28,626 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:40:28,649 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:40:28,649 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:40:28,681 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:40:52,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:40:52,029 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 20:40:52,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:40:52,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 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 10091
[2021-12-06 20:40:52,050 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:40:52,154 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 20:40:52,154 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 20:40:52,170 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:40:52,173 INFO  L933         BasicCegarLoop]: 4840 mSDtfsCounter, 3143 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29575 mSolverCounterSat, 11263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3143 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 40838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11263 IncrementalHoareTripleChecker+Valid, 29575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time
[2021-12-06 20:40:52,174 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3143 Valid, 4893 Invalid, 40838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11263 Valid, 29575 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time]
[2021-12-06 20:40:52,211 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 20:40:52,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 20:40:52,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7562674778001275) internal successors, (35798), 20383 states have internal predecessors, (35798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:40:52,650 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 35798 transitions.
[2021-12-06 20:40:52,651 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 35798 transitions. Word has length 10091
[2021-12-06 20:40:52,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:40:52,663 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 35798 transitions.
[2021-12-06 20:40:52,665 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:40:52,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 35798 transitions.
[2021-12-06 20:40:53,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10098
[2021-12-06 20:40:53,259 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:40:53,264 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:40:53,265 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 20:40:53,265 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:40:53,266 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:40:53,271 INFO  L85        PathProgramCache]: Analyzing trace with hash -1383415378, now seen corresponding path program 1 times
[2021-12-06 20:40:53,271 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:40:53,271 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686991776]
[2021-12-06 20:40:53,274 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:40:53,274 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:40:54,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:41:05,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:41:05,163 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:41:05,163 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686991776]
[2021-12-06 20:41:05,163 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686991776] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:41:05,163 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:41:05,165 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:41:05,165 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441254729]
[2021-12-06 20:41:05,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:41:05,179 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:41:05,179 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:41:05,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:41:05,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:41:05,183 INFO  L87              Difference]: Start difference. First operand 20384 states and 35798 transitions. Second operand  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:41:28,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:41:28,096 INFO  L93              Difference]: Finished difference Result 61146 states and 107389 transitions.
[2021-12-06 20:41:28,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:41:28,098 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 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 10097
[2021-12-06 20:41:28,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:41:28,166 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 20:41:28,166 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 20:41:28,184 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:41:28,185 INFO  L933         BasicCegarLoop]: 4819 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time
[2021-12-06 20:41:28,185 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 4868 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time]
[2021-12-06 20:41:28,232 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 20:41:28,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 20:41:28,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.578514829624905) internal successors, (64345), 40763 states have internal predecessors, (64345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:41:28,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 64345 transitions.
[2021-12-06 20:41:28,803 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 64345 transitions. Word has length 10097
[2021-12-06 20:41:28,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:41:28,805 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 64345 transitions.
[2021-12-06 20:41:28,806 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:41:28,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 64345 transitions.
[2021-12-06 20:41:29,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10126
[2021-12-06 20:41:29,401 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:41:29,406 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 20:41:29,406 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 20:41:29,406 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:41:29,407 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:41:29,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 897044674, now seen corresponding path program 1 times
[2021-12-06 20:41:29,410 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:41:29,410 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530340024]
[2021-12-06 20:41:29,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:41:29,411 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:41:30,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:41:40,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-12-06 20:41:40,060 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:41:40,060 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530340024]
[2021-12-06 20:41:40,060 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530340024] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:41:40,060 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:41:40,061 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:41:40,062 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603529586]
[2021-12-06 20:41:40,062 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:41:40,069 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:41:40,070 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:41:40,070 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:41:40,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:41:40,072 INFO  L87              Difference]: Start difference. First operand 40764 states and 64345 transitions. Second operand  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:04,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:42:04,679 INFO  L93              Difference]: Finished difference Result 122286 states and 193030 transitions.
[2021-12-06 20:42:04,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:42:04,681 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 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 10125
[2021-12-06 20:42:04,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:42:04,753 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 20:42:04,753 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 20:42:04,785 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:42:04,786 INFO  L933         BasicCegarLoop]: 9509 mSDtfsCounter, 10242 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32553 mSolverCounterSat, 9364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10242 SdHoareTripleChecker+Valid, 9559 SdHoareTripleChecker+Invalid, 41917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9364 IncrementalHoareTripleChecker+Valid, 32553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-06 20:42:04,786 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10242 Valid, 9559 Invalid, 41917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9364 Valid, 32553 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-06 20:42:04,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 20:42:05,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 20:42:05,510 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.3585981870147075) internal successors, (110757), 81523 states have internal predecessors, (110757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:05,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 110757 transitions.
[2021-12-06 20:42:05,614 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 110757 transitions. Word has length 10125
[2021-12-06 20:42:05,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:42:05,615 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 110757 transitions.
[2021-12-06 20:42:05,617 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:05,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 110757 transitions.
[2021-12-06 20:42:06,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2021-12-06 20:42:06,340 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:42:06,345 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:42:06,345 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 20:42:06,345 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:42:06,346 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:42:06,348 INFO  L85        PathProgramCache]: Analyzing trace with hash -230498663, now seen corresponding path program 1 times
[2021-12-06 20:42:06,348 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:42:06,349 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025969352]
[2021-12-06 20:42:06,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:42:06,349 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:42:07,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:42:17,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:42:17,001 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:42:17,001 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025969352]
[2021-12-06 20:42:17,002 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025969352] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:42:17,002 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:42:17,003 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:42:17,003 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896213035]
[2021-12-06 20:42:17,003 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:42:17,009 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:42:17,010 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:42:17,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:42:17,010 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:42:17,012 INFO  L87              Difference]: Start difference. First operand 81524 states and 110757 transitions. Second operand  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:41,310 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:42:41,310 INFO  L93              Difference]: Finished difference Result 244566 states and 332266 transitions.
[2021-12-06 20:42:41,311 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:42:41,312 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10128
[2021-12-06 20:42:41,312 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:42:41,546 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 20:42:41,546 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 20:42:41,577 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:42:41,578 INFO  L933         BasicCegarLoop]: 7745 mSDtfsCounter, 12088 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27826 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12088 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 40856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 20:42:41,578 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12088 Valid, 7794 Invalid, 40856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27826 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 20:42:41,670 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 20:42:42,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 20:42:42,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.2584716915169618) internal successors, (205185), 163043 states have internal predecessors, (205185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:43,187 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 205185 transitions.
[2021-12-06 20:42:43,187 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 205185 transitions. Word has length 10128
[2021-12-06 20:42:43,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:42:43,189 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 205185 transitions.
[2021-12-06 20:42:43,190 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:42:43,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 205185 transitions.
[2021-12-06 20:42:44,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10161
[2021-12-06 20:42:44,135 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:42:44,140 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:42:44,140 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 20:42:44,140 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:42:44,140 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:42:44,143 INFO  L85        PathProgramCache]: Analyzing trace with hash 2016830697, now seen corresponding path program 1 times
[2021-12-06 20:42:44,143 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:42:44,143 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083078548]
[2021-12-06 20:42:44,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:42:44,144 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:42:44,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:42:55,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:42:55,007 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:42:55,008 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083078548]
[2021-12-06 20:42:55,008 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083078548] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:42:55,008 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:42:55,009 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:42:55,009 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769929123]
[2021-12-06 20:42:55,009 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:42:55,016 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:42:55,016 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:42:55,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:42:55,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:42:55,018 INFO  L87              Difference]: Start difference. First operand 163044 states and 205185 transitions. Second operand  has 3 states, 3 states have (on average 3386.6666666666665) internal successors, (10160), 2 states have internal predecessors, (10160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:43:19,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:43:19,900 INFO  L93              Difference]: Finished difference Result 489126 states and 615550 transitions.
[2021-12-06 20:43:19,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:43:19,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3386.6666666666665) internal successors, (10160), 2 states have internal predecessors, (10160), 0 states have call successors, (0), 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 10160
[2021-12-06 20:43:19,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:43:20,257 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 20:43:20,257 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 20:43:20,431 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:43:20,432 INFO  L933         BasicCegarLoop]: 6788 mSDtfsCounter, 12407 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29266 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12407 SdHoareTripleChecker+Valid, 6837 SdHoareTripleChecker+Invalid, 41021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 20:43:20,432 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12407 Valid, 6837 Invalid, 41021 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29266 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 20:43:20,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 20:43:23,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 20:43:23,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.1961525133171615) internal successors, (390045), 326083 states have internal predecessors, (390045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:43:23,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 390045 transitions.
[2021-12-06 20:43:23,854 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 390045 transitions. Word has length 10160
[2021-12-06 20:43:23,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:43:23,856 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 390045 transitions.
[2021-12-06 20:43:23,857 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3386.6666666666665) internal successors, (10160), 2 states have internal predecessors, (10160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:43:23,857 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 390045 transitions.
[2021-12-06 20:43:24,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10279
[2021-12-06 20:43:24,862 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:43:24,866 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 20:43:24,866 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 20:43:24,866 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:43:24,866 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:43:24,869 INFO  L85        PathProgramCache]: Analyzing trace with hash 1334364720, now seen corresponding path program 1 times
[2021-12-06 20:43:24,869 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:43:24,870 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881641424]
[2021-12-06 20:43:24,870 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:43:24,870 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:43:25,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:43:38,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:43:38,234 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:43:38,234 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881641424]
[2021-12-06 20:43:38,234 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881641424] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:43:38,234 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:43:38,236 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:43:38,236 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920121107]
[2021-12-06 20:43:38,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:43:38,242 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:43:38,242 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:43:38,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:43:38,243 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:43:38,245 INFO  L87              Difference]: Start difference. First operand 326084 states and 390045 transitions. Second operand  has 3 states, 3 states have (on average 3426.0) internal successors, (10278), 2 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:04,311 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:44:04,311 INFO  L93              Difference]: Finished difference Result 978246 states and 1170130 transitions.
[2021-12-06 20:44:04,312 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:44:04,313 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3426.0) internal successors, (10278), 2 states have internal predecessors, (10278), 0 states have call successors, (0), 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 10278
[2021-12-06 20:44:04,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:44:05,019 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 20:44:05,020 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 20:44:05,152 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:44:05,152 INFO  L933         BasicCegarLoop]: 9000 mSDtfsCounter, 10749 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31677 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10749 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 42178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 20:44:05,153 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10749 Valid, 9049 Invalid, 42178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31677 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 20:44:05,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 20:44:10,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 20:44:11,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.14939823326377) internal successors, (749595), 652163 states have internal predecessors, (749595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:12,181 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 749595 transitions.
[2021-12-06 20:44:12,181 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 749595 transitions. Word has length 10278
[2021-12-06 20:44:12,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:44:12,182 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 749595 transitions.
[2021-12-06 20:44:12,183 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3426.0) internal successors, (10278), 2 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:12,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 749595 transitions.
[2021-12-06 20:44:13,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10648
[2021-12-06 20:44:13,607 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:44:13,610 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:44:13,610 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 20:44:13,610 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:44:13,611 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:44:13,612 INFO  L85        PathProgramCache]: Analyzing trace with hash 1421314072, now seen corresponding path program 1 times
[2021-12-06 20:44:13,612 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:44:13,612 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492924959]
[2021-12-06 20:44:13,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:44:13,613 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:44:14,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:44:26,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 636 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2021-12-06 20:44:26,691 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:44:26,692 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492924959]
[2021-12-06 20:44:26,692 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492924959] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:44:26,692 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:44:26,693 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:44:26,693 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234096097]
[2021-12-06 20:44:26,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:44:26,699 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:44:26,700 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:44:26,700 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:44:26,700 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:44:26,702 INFO  L87              Difference]: Start difference. First operand 652164 states and 749595 transitions. Second operand  has 3 states, 3 states have (on average 3521.3333333333335) internal successors, (10564), 2 states have internal predecessors, (10564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:55,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:44:55,192 INFO  L93              Difference]: Finished difference Result 1956486 states and 2248780 transitions.
[2021-12-06 20:44:55,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:44:55,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3521.3333333333335) internal successors, (10564), 2 states have internal predecessors, (10564), 0 states have call successors, (0), 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 10647
[2021-12-06 20:44:55,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:44:56,819 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-06 20:44:56,819 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-06 20:44:57,039 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:44:57,040 INFO  L933         BasicCegarLoop]: 6002 mSDtfsCounter, 12123 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29861 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12123 SdHoareTripleChecker+Valid, 6051 SdHoareTripleChecker+Invalid, 40895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 20:44:57,041 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12123 Valid, 6051 Invalid, 40895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29861 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 20:44:58,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-06 20:45:08,453 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-06 20:45:08,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.1113282522810684) internal successors, (1449531), 1304323 states have internal predecessors, (1449531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:45:11,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1449531 transitions.
[2021-12-06 20:45:11,130 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1449531 transitions. Word has length 10647
[2021-12-06 20:45:11,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:45:11,131 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1449531 transitions.
[2021-12-06 20:45:11,132 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3521.3333333333335) internal successors, (10564), 2 states have internal predecessors, (10564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:45:11,132 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1449531 transitions.
[2021-12-06 20:45:13,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11137
[2021-12-06 20:45:13,283 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:45:13,285 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 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, 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[2021-12-06 20:45:13,285 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 20:45:13,286 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:45:13,286 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:45:13,287 INFO  L85        PathProgramCache]: Analyzing trace with hash -165074673, now seen corresponding path program 1 times
[2021-12-06 20:45:13,287 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:45:13,287 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355954151]
[2021-12-06 20:45:13,288 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:45:13,288 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:45:14,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:45:27,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 1355 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked.
[2021-12-06 20:45:27,509 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:45:27,509 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355954151]
[2021-12-06 20:45:27,509 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355954151] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:45:27,509 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:45:27,511 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:45:27,511 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359711360]
[2021-12-06 20:45:27,511 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:45:27,515 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:45:27,515 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:45:27,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:45:27,516 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:45:27,517 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1449531 transitions. Second operand  has 3 states, 3 states have (on average 3620.6666666666665) internal successors, (10862), 2 states have internal predecessors, (10862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:46:01,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:46:01,581 INFO  L93              Difference]: Finished difference Result 3882396 states and 4314730 transitions.
[2021-12-06 20:46:01,581 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:46:01,583 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3620.6666666666665) internal successors, (10862), 2 states have internal predecessors, (10862), 0 states have call successors, (0), 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 11136
[2021-12-06 20:46:01,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:46:05,073 INFO  L225             Difference]: With dead ends: 3882396
[2021-12-06 20:46:05,073 INFO  L226             Difference]: Without dead ends: 2578074
[2021-12-06 20:46:05,746 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:46:05,746 INFO  L933         BasicCegarLoop]: 5909 mSDtfsCounter, 9683 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31792 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9683 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 43356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time
[2021-12-06 20:46:05,747 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9683 Valid, 5958 Invalid, 43356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31792 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time]
[2021-12-06 20:46:08,234 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2578074 states.