./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label28.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_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/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_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label28.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/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_8f09b443-4a9e-46cc-b36c-9a7834010daa/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 7b94c1efc33cffedcd14788d17eed9a10942455a0788d1c0fa45d24d552dd890
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:33:05,205 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:33:05,207 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:33:05,231 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:33:05,231 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:33:05,232 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:33:05,234 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:33:05,236 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:33:05,237 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:33:05,238 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:33:05,239 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:33:05,240 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:33:05,241 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:33:05,241 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:33:05,243 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:33:05,244 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:33:05,245 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:33:05,246 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:33:05,248 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:33:05,250 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:33:05,251 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:33:05,252 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:33:05,253 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:33:05,254 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:33:05,257 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:33:05,258 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:33:05,258 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:33:05,259 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:33:05,259 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:33:05,260 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:33:05,260 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:33:05,261 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:33:05,262 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:33:05,262 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:33:05,263 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:33:05,264 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:33:05,264 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:33:05,264 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:33:05,265 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:33:05,265 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:33:05,266 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:33:05,267 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:33:05,284 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:33:05,284 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:33:05,285 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:33:05,285 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:33:05,285 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:33:05,285 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:33:05,286 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:33:05,286 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:33:05,286 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:33:05,286 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:33:05,286 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:33:05,286 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:33:05,286 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:33:05,287 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:33:05,288 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:33:05,288 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:33:05,288 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:33:05,289 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:33:05,289 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:33:05,289 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:33:05,289 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:33:05,289 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_8f09b443-4a9e-46cc-b36c-9a7834010daa/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_8f09b443-4a9e-46cc-b36c-9a7834010daa/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 -> 7b94c1efc33cffedcd14788d17eed9a10942455a0788d1c0fa45d24d552dd890
[2021-12-06 19:33:05,461 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:33:05,478 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:33:05,480 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:33:05,481 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:33:05,481 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:33:05,482 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label28.c
[2021-12-06 19:33:05,524 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/data/e3cdff0e6/cf94552f3fb44ea2a7e4e5b5633aa819/FLAG38fe7c73c
[2021-12-06 19:33:06,996 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:33:06,997 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/sv-benchmarks/c/eca-rers2012/Problem07_label28.c
[2021-12-06 19:33:07,137 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/data/e3cdff0e6/cf94552f3fb44ea2a7e4e5b5633aa819/FLAG38fe7c73c
[2021-12-06 19:33:07,329 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/data/e3cdff0e6/cf94552f3fb44ea2a7e4e5b5633aa819
[2021-12-06 19:33:07,332 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:33:07,334 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:33:07,335 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:33:07,335 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:33:07,339 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:33:07,340 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:07" (1/1) ...
[2021-12-06 19:33:07,341 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa94882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:07, skipping insertion in model container
[2021-12-06 19:33:07,341 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:33:07" (1/1) ...
[2021-12-06 19:33:07,347 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:33:08,001 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:33:17,889 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_8f09b443-4a9e-46cc-b36c-9a7834010daa/sv-benchmarks/c/eca-rers2012/Problem07_label28.c[2773758,2773771]
[2021-12-06 19:33:17,949 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:33:17,956 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:33:23,993 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_8f09b443-4a9e-46cc-b36c-9a7834010daa/sv-benchmarks/c/eca-rers2012/Problem07_label28.c[2773758,2773771]
[2021-12-06 19:33:23,998 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:33:24,636 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:33:24,636 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24 WrapperNode
[2021-12-06 19:33:24,637 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:33:24,637 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:33:24,637 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:33:24,637 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:33:24,642 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:24,963 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:26,239 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 19:33:26,240 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:33:26,240 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:33:26,240 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:33:26,240 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:33:26,248 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:26,248 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:26,465 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:26,465 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:27,068 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:27,177 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:27,284 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:27,572 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:33:27,573 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:33:27,573 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:33:27,573 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:33:27,574 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (1/1) ...
[2021-12-06 19:33:27,580 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:33:27,589 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:33:27,600 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:33:27,602 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f09b443-4a9e-46cc-b36c-9a7834010daa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:33:27,632 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:33:27,633 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:33:27,633 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:33:27,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:33:27,725 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:33:27,726 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:33:51,117 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:33:51,158 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:33:51,158 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:33:51,166 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:33:51 BoogieIcfgContainer
[2021-12-06 19:33:51,166 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:33:51,168 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:33:51,168 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:33:51,170 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:33:51,170 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:33:07" (1/3) ...
[2021-12-06 19:33:51,171 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161192e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:33:51, skipping insertion in model container
[2021-12-06 19:33:51,171 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:33:24" (2/3) ...
[2021-12-06 19:33:51,171 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161192e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:33:51, skipping insertion in model container
[2021-12-06 19:33:51,171 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:33:51" (3/3) ...
[2021-12-06 19:33:51,172 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label28.c
[2021-12-06 19:33:51,176 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:33:51,176 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:33:51,239 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:33:51,246 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 19:33:51,246 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:33:51,358 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 19:33:51,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10128
[2021-12-06 19:33:51,783 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:33:51,789 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 19:33:51,791 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:33:51,795 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:33:51,801 INFO  L85        PathProgramCache]: Analyzing trace with hash -2054011423, now seen corresponding path program 1 times
[2021-12-06 19:33:51,807 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:33:51,807 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514723185]
[2021-12-06 19:33:51,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:33:51,811 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:33:53,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:34:14,866 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 19:34:14,867 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:34:14,867 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514723185]
[2021-12-06 19:34:14,868 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514723185] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:34:14,868 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:34:14,870 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:34:14,871 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266224193]
[2021-12-06 19:34:14,871 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:34:14,884 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:34:14,884 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:34:14,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:34:14,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:34:14,927 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 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 0 states have call successors, (0), 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 19:34:39,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:34:39,052 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 19:34:39,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:34:39,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 0 states have call successors, (0), 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 10127
[2021-12-06 19:34:39,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:34:39,226 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 19:34:39,226 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 19:34:39,246 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 19:34:39,250 INFO  L933         BasicCegarLoop]: 7753 mSDtfsCounter, 381 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31165 mSolverCounterSat, 9560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 40725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9560 IncrementalHoareTripleChecker+Valid, 31165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 19:34:39,251 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 7806 Invalid, 40725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9560 Valid, 31165 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 19:34:39,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 19:34:39,762 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 19:34:39,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.6155619879311192) internal successors, (32930), 20383 states have internal predecessors, (32930), 0 states have call successors, (0), 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 19:34:39,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 32930 transitions.
[2021-12-06 19:34:39,860 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 32930 transitions. Word has length 10127
[2021-12-06 19:34:39,876 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:34:39,876 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 32930 transitions.
[2021-12-06 19:34:39,878 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 0 states have call successors, (0), 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 19:34:39,878 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 32930 transitions.
[2021-12-06 19:34:40,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10132
[2021-12-06 19:34:40,474 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:34:40,479 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:34:40,479 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 19:34:40,480 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:34:40,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:34:40,485 INFO  L85        PathProgramCache]: Analyzing trace with hash 967727801, now seen corresponding path program 1 times
[2021-12-06 19:34:40,485 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:34:40,485 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891712706]
[2021-12-06 19:34:40,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:34:40,488 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:34:41,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:34:58,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:34:58,724 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:34:58,724 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891712706]
[2021-12-06 19:34:58,724 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891712706] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:34:58,724 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:34:58,726 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:34:58,726 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554037698]
[2021-12-06 19:34:58,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:34:58,733 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:34:58,733 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:34:58,734 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:34:58,734 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:34:58,737 INFO  L87              Difference]: Start difference. First operand 20384 states and 32930 transitions. Second operand  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:35:23,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:35:23,469 INFO  L93              Difference]: Finished difference Result 61146 states and 98785 transitions.
[2021-12-06 19:35:23,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:35:23,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10131
[2021-12-06 19:35:23,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:35:23,542 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 19:35:23,542 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 19:35:23,561 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:35:23,563 INFO  L933         BasicCegarLoop]: 8838 mSDtfsCounter, 11137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29966 mSolverCounterSat, 11743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11137 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 41709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11743 IncrementalHoareTripleChecker+Valid, 29966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time
[2021-12-06 19:35:23,564 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11137 Valid, 8887 Invalid, 41709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11743 Valid, 29966 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time]
[2021-12-06 19:35:23,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 19:35:24,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 19:35:24,079 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.470328484164561) internal successors, (59935), 40763 states have internal predecessors, (59935), 0 states have call successors, (0), 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 19:35:24,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59935 transitions.
[2021-12-06 19:35:24,139 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59935 transitions. Word has length 10131
[2021-12-06 19:35:24,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:35:24,141 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59935 transitions.
[2021-12-06 19:35:24,142 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.0) internal successors, (10131), 2 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:35:24,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59935 transitions.
[2021-12-06 19:35:24,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10135
[2021-12-06 19:35:24,775 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:35:24,780 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 19:35:24,780 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 19:35:24,781 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:35:24,781 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:35:24,784 INFO  L85        PathProgramCache]: Analyzing trace with hash 538554110, now seen corresponding path program 1 times
[2021-12-06 19:35:24,785 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:35:24,785 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386933404]
[2021-12-06 19:35:24,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:35:24,787 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:35:25,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:35:41,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:35:41,733 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:35:41,733 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386933404]
[2021-12-06 19:35:41,733 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386933404] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:35:41,733 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:35:41,735 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:35:41,735 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038540342]
[2021-12-06 19:35:41,735 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:35:41,741 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:35:41,742 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:35:41,742 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:35:41,742 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:35:41,744 INFO  L87              Difference]: Start difference. First operand 40764 states and 59935 transitions. Second operand  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 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 19:36:05,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:36:05,678 INFO  L93              Difference]: Finished difference Result 122286 states and 179800 transitions.
[2021-12-06 19:36:05,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:36:05,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 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 10134
[2021-12-06 19:36:05,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:36:05,748 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 19:36:05,749 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 19:36:05,778 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 19:36:05,780 INFO  L933         BasicCegarLoop]: 9447 mSDtfsCounter, 10617 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31303 mSolverCounterSat, 10928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10617 SdHoareTripleChecker+Valid, 9497 SdHoareTripleChecker+Invalid, 42231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10928 IncrementalHoareTripleChecker+Valid, 31303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 19:36:05,780 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10617 Valid, 9497 Invalid, 42231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10928 Valid, 31303 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 19:36:05,830 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 19:36:06,486 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 19:36:06,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.359334175631417) internal successors, (110817), 81523 states have internal predecessors, (110817), 0 states have call successors, (0), 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 19:36:06,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 110817 transitions.
[2021-12-06 19:36:06,617 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 110817 transitions. Word has length 10134
[2021-12-06 19:36:06,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:36:06,619 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 110817 transitions.
[2021-12-06 19:36:06,620 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 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 19:36:06,620 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 110817 transitions.
[2021-12-06 19:36:07,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10165
[2021-12-06 19:36:07,311 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:36:07,316 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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[2021-12-06 19:36:07,316 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 19:36:07,316 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:36:07,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:36:07,320 INFO  L85        PathProgramCache]: Analyzing trace with hash 595823977, now seen corresponding path program 1 times
[2021-12-06 19:36:07,320 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:36:07,321 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700402513]
[2021-12-06 19:36:07,321 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:36:07,321 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:36:08,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:36:24,536 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 19:36:24,537 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:36:24,537 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700402513]
[2021-12-06 19:36:24,537 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700402513] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:36:24,537 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:36:24,538 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:36:24,538 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39440674]
[2021-12-06 19:36:24,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:36:24,545 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:36:24,545 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:36:24,545 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:36:24,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:36:24,547 INFO  L87              Difference]: Start difference. First operand 81524 states and 110817 transitions. Second operand  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 0 states have call successors, (0), 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 19:36:49,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:36:49,721 INFO  L93              Difference]: Finished difference Result 244566 states and 332446 transitions.
[2021-12-06 19:36:49,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:36:49,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 0 states have call successors, (0), 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 10164
[2021-12-06 19:36:49,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:36:50,005 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 19:36:50,005 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 19:36:50,037 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 19:36:50,039 INFO  L933         BasicCegarLoop]: 6564 mSDtfsCounter, 13102 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27663 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13102 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 40693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:36:50,039 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13102 Valid, 6613 Invalid, 40693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27663 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time]
[2021-12-06 19:36:50,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 19:36:51,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 19:36:51,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.257993290113651) internal successors, (205107), 163043 states have internal predecessors, (205107), 0 states have call successors, (0), 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 19:36:51,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 205107 transitions.
[2021-12-06 19:36:51,660 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 205107 transitions. Word has length 10164
[2021-12-06 19:36:51,662 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:36:51,662 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 205107 transitions.
[2021-12-06 19:36:51,663 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 0 states have call successors, (0), 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 19:36:51,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 205107 transitions.
[2021-12-06 19:36:52,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10245
[2021-12-06 19:36:52,578 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:36:52,584 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, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:36:52,584 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 19:36:52,584 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:36:52,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:36:52,588 INFO  L85        PathProgramCache]: Analyzing trace with hash -1843028793, now seen corresponding path program 1 times
[2021-12-06 19:36:52,588 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:36:52,588 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016598094]
[2021-12-06 19:36:52,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:36:52,589 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:36:53,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:37:08,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2021-12-06 19:37:08,692 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:37:08,692 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016598094]
[2021-12-06 19:37:08,692 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016598094] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:37:08,692 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:37:08,694 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:37:08,694 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012268327]
[2021-12-06 19:37:08,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:37:08,708 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:37:08,708 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:37:08,709 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:37:08,709 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:37:08,711 INFO  L87              Difference]: Start difference. First operand 163044 states and 205107 transitions. Second operand  has 3 states, 3 states have (on average 3390.6666666666665) internal successors, (10172), 2 states have internal predecessors, (10172), 0 states have call successors, (0), 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 19:37:32,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:37:32,865 INFO  L93              Difference]: Finished difference Result 489126 states and 615316 transitions.
[2021-12-06 19:37:32,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:37:32,867 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3390.6666666666665) internal successors, (10172), 2 states have internal predecessors, (10172), 0 states have call successors, (0), 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 10244
[2021-12-06 19:37:32,867 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:37:33,196 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 19:37:33,197 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 19:37:33,272 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 19:37:33,273 INFO  L933         BasicCegarLoop]: 6020 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29205 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 40875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time
[2021-12-06 19:37:33,273 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12828 Valid, 6069 Invalid, 40875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29205 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time]
[2021-12-06 19:37:33,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 19:37:35,932 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 19:37:36,119 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 19:37:36,743 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 390045 transitions.
[2021-12-06 19:37:36,743 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 390045 transitions. Word has length 10244
[2021-12-06 19:37:36,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:37:36,745 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 390045 transitions.
[2021-12-06 19:37:36,746 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3390.6666666666665) internal successors, (10172), 2 states have internal predecessors, (10172), 0 states have call successors, (0), 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 19:37:36,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 390045 transitions.
[2021-12-06 19:37:37,729 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10315
[2021-12-06 19:37:37,729 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:37:37,733 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 19:37:37,734 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 19:37:37,734 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:37:37,734 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:37:37,738 INFO  L85        PathProgramCache]: Analyzing trace with hash -1452426880, now seen corresponding path program 1 times
[2021-12-06 19:37:37,738 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:37:37,738 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482183649]
[2021-12-06 19:37:37,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:37:37,740 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:37:38,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:37:55,095 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 19:37:55,095 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:37:55,095 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482183649]
[2021-12-06 19:37:55,096 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482183649] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:37:55,096 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:37:55,097 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:37:55,097 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148686878]
[2021-12-06 19:37:55,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:37:55,104 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:37:55,104 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:37:55,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:37:55,104 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:37:55,106 INFO  L87              Difference]: Start difference. First operand 326084 states and 390045 transitions. Second operand  has 3 states, 3 states have (on average 3438.0) internal successors, (10314), 2 states have internal predecessors, (10314), 0 states have call successors, (0), 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 19:38:21,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:38:21,353 INFO  L93              Difference]: Finished difference Result 978246 states and 1170130 transitions.
[2021-12-06 19:38:21,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:38:21,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3438.0) internal successors, (10314), 2 states have internal predecessors, (10314), 0 states have call successors, (0), 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 10314
[2021-12-06 19:38:21,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:38:22,089 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 19:38:22,089 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 19:38:22,231 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 19:38:22,232 INFO  L933         BasicCegarLoop]: 9000 mSDtfsCounter, 10749 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31677 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s 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, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 19:38:22,233 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10749 Valid, 9049 Invalid, 42178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31677 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 19:38:22,760 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 19:38:27,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 19:38:28,091 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 19:38:29,269 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 749595 transitions.
[2021-12-06 19:38:29,269 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 749595 transitions. Word has length 10314
[2021-12-06 19:38:29,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:38:29,270 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 749595 transitions.
[2021-12-06 19:38:29,271 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3438.0) internal successors, (10314), 2 states have internal predecessors, (10314), 0 states have call successors, (0), 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 19:38:29,271 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 749595 transitions.
[2021-12-06 19:38:30,719 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10684
[2021-12-06 19:38:30,719 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:38:30,722 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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[2021-12-06 19:38:30,722 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 19:38:30,722 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:38:30,723 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:38:30,724 INFO  L85        PathProgramCache]: Analyzing trace with hash -421944472, now seen corresponding path program 1 times
[2021-12-06 19:38:30,724 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:38:30,724 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760982855]
[2021-12-06 19:38:30,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:38:30,725 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:38:31,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:38:48,459 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 19:38:48,459 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:38:48,459 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760982855]
[2021-12-06 19:38:48,459 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760982855] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:38:48,459 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:38:48,461 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:38:48,461 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801774714]
[2021-12-06 19:38:48,461 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:38:48,466 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:38:48,466 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:38:48,466 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:38:48,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:38:48,468 INFO  L87              Difference]: Start difference. First operand 652164 states and 749595 transitions. Second operand  has 3 states, 3 states have (on average 3533.3333333333335) internal successors, (10600), 2 states have internal predecessors, (10600), 0 states have call successors, (0), 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 19:39:16,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:39:16,057 INFO  L93              Difference]: Finished difference Result 1956486 states and 2248780 transitions.
[2021-12-06 19:39:16,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:39:16,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3533.3333333333335) internal successors, (10600), 2 states have internal predecessors, (10600), 0 states have call successors, (0), 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 10683
[2021-12-06 19:39:16,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:39:17,662 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-06 19:39:17,662 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-06 19:39:17,898 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 19:39:17,899 INFO  L933         BasicCegarLoop]: 6002 mSDtfsCounter, 12123 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29861 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s 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, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 19:39:17,899 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12123 Valid, 6051 Invalid, 40895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29861 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 19:39:18,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-06 19:39:29,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-06 19:39:29,928 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 19:39:32,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1449531 transitions.
[2021-12-06 19:39:32,578 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1449531 transitions. Word has length 10683
[2021-12-06 19:39:32,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:39:32,579 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1449531 transitions.
[2021-12-06 19:39:32,580 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3533.3333333333335) internal successors, (10600), 2 states have internal predecessors, (10600), 0 states have call successors, (0), 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 19:39:32,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1449531 transitions.
[2021-12-06 19:39:34,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11173
[2021-12-06 19:39:34,975 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:39:34,977 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 19:39:34,977 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 19:39:34,978 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:39:34,979 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:39:34,980 INFO  L85        PathProgramCache]: Analyzing trace with hash 1055413471, now seen corresponding path program 1 times
[2021-12-06 19:39:34,980 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:39:34,981 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785702949]
[2021-12-06 19:39:34,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:39:34,981 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:39:35,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:39:53,858 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 19:39:53,859 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:39:53,859 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785702949]
[2021-12-06 19:39:53,859 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785702949] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:39:53,859 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:39:53,860 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:39:53,860 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215679939]
[2021-12-06 19:39:53,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:39:53,864 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:39:53,865 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:39:53,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:39:53,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:39:53,867 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1449531 transitions. Second operand  has 3 states, 3 states have (on average 3632.6666666666665) internal successors, (10898), 2 states have internal predecessors, (10898), 0 states have call successors, (0), 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 19:40:28,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:40:28,414 INFO  L93              Difference]: Finished difference Result 3882396 states and 4314730 transitions.
[2021-12-06 19:40:28,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:40:28,416 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3632.6666666666665) internal successors, (10898), 2 states have internal predecessors, (10898), 0 states have call successors, (0), 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 11172
[2021-12-06 19:40:28,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:40:31,857 INFO  L225             Difference]: With dead ends: 3882396
[2021-12-06 19:40:31,857 INFO  L226             Difference]: Without dead ends: 2578074
[2021-12-06 19:40:32,312 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 19:40:32,313 INFO  L933         BasicCegarLoop]: 5909 mSDtfsCounter, 9682 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31792 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 43356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:40:32,313 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9682 Valid, 5959 Invalid, 43356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31792 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time]
[2021-12-06 19:40:34,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2578074 states.
[2021-12-06 19:40:54,994 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578074 to 2578074.
[2021-12-06 19:40:55,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2578074 states, 2578073 states have (on average 1.0904613639722383) internal successors, (2811289), 2578073 states have internal predecessors, (2811289), 0 states have call successors, (0), 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 19:41:00,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2578074 states to 2578074 states and 2811289 transitions.
[2021-12-06 19:41:00,903 INFO  L78                 Accepts]: Start accepts. Automaton has 2578074 states and 2811289 transitions. Word has length 11172
[2021-12-06 19:41:00,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:41:00,905 INFO  L470      AbstractCegarLoop]: Abstraction has 2578074 states and 2811289 transitions.
[2021-12-06 19:41:00,906 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3632.6666666666665) internal successors, (10898), 2 states have internal predecessors, (10898), 0 states have call successors, (0), 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 19:41:00,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 2578074 states and 2811289 transitions.