./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label53.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_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/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_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/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_08eded9e-25ba-462d-bb00-978ad9504a2d/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 777b34a90701d0b2e3b99f6c0346a6970c96eba1bddafb1527e8d1dc2f81affe
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 20:42:27,406 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 20:42:27,408 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 20:42:27,429 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 20:42:27,430 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 20:42:27,431 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 20:42:27,432 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 20:42:27,434 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 20:42:27,436 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 20:42:27,436 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 20:42:27,437 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 20:42:27,438 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 20:42:27,439 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 20:42:27,440 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 20:42:27,441 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 20:42:27,442 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 20:42:27,443 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 20:42:27,443 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 20:42:27,445 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 20:42:27,447 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 20:42:27,448 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 20:42:27,449 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 20:42:27,451 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 20:42:27,451 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 20:42:27,454 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 20:42:27,454 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 20:42:27,455 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 20:42:27,456 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 20:42:27,456 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 20:42:27,457 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 20:42:27,457 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 20:42:27,458 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 20:42:27,458 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 20:42:27,459 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 20:42:27,460 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 20:42:27,460 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 20:42:27,461 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 20:42:27,461 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 20:42:27,461 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 20:42:27,462 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 20:42:27,462 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 20:42:27,463 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 20:42:27,480 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 20:42:27,481 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 20:42:27,481 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 20:42:27,481 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 20:42:27,481 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 20:42:27,482 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 20:42:27,482 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 20:42:27,482 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 20:42:27,482 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 20:42:27,483 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 20:42:27,483 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 20:42:27,484 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 20:42:27,484 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 20:42:27,485 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 20:42:27,485 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 20:42:27,486 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 20:42:27,486 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_08eded9e-25ba-462d-bb00-978ad9504a2d/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_08eded9e-25ba-462d-bb00-978ad9504a2d/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 -> 777b34a90701d0b2e3b99f6c0346a6970c96eba1bddafb1527e8d1dc2f81affe
[2021-12-06 20:42:27,673 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 20:42:27,692 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 20:42:27,693 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 20:42:27,694 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 20:42:27,695 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 20:42:27,696 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label53.c
[2021-12-06 20:42:27,746 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/data/40cc58424/9990d24008b8409ba4fbc2c4411be9b0/FLAGbc3aae645
[2021-12-06 20:42:29,109 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 20:42:29,109 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/sv-benchmarks/c/eca-rers2012/Problem07_label53.c
[2021-12-06 20:42:29,279 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/data/40cc58424/9990d24008b8409ba4fbc2c4411be9b0/FLAGbc3aae645
[2021-12-06 20:42:29,786 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/data/40cc58424/9990d24008b8409ba4fbc2c4411be9b0
[2021-12-06 20:42:29,789 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 20:42:29,790 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 20:42:29,791 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 20:42:29,792 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 20:42:29,795 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 20:42:29,795 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:42:29" (1/1) ...
[2021-12-06 20:42:29,796 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e7d9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:29, skipping insertion in model container
[2021-12-06 20:42:29,796 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:42:29" (1/1) ...
[2021-12-06 20:42:29,801 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 20:42:30,477 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 20:42:40,285 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_08eded9e-25ba-462d-bb00-978ad9504a2d/sv-benchmarks/c/eca-rers2012/Problem07_label53.c[2776999,2777012]
[2021-12-06 20:42:40,344 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 20:42:40,349 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 20:42:46,300 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_08eded9e-25ba-462d-bb00-978ad9504a2d/sv-benchmarks/c/eca-rers2012/Problem07_label53.c[2776999,2777012]
[2021-12-06 20:42:46,303 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 20:42:47,032 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 20:42:47,033 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47 WrapperNode
[2021-12-06 20:42:47,033 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 20:42:47,033 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 20:42:47,034 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 20:42:47,034 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 20:42:47,039 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:47,299 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:48,505 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 20:42:48,505 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 20:42:48,506 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 20:42:48,506 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 20:42:48,506 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 20:42:48,513 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:48,513 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:48,718 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:48,718 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:49,324 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:49,443 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:49,550 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:49,824 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 20:42:49,825 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 20:42:49,825 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 20:42:49,825 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 20:42:49,826 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (1/1) ...
[2021-12-06 20:42:49,832 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 20:42:49,840 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 20:42:49,850 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 20:42:49,852 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eded9e-25ba-462d-bb00-978ad9504a2d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 20:42:49,878 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 20:42:49,878 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 20:42:49,878 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 20:42:49,878 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 20:42:49,970 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 20:42:49,971 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 20:43:13,630 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 20:43:13,671 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 20:43:13,671 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 20:43:13,680 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:43:13 BoogieIcfgContainer
[2021-12-06 20:43:13,680 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 20:43:13,681 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 20:43:13,681 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 20:43:13,683 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 20:43:13,684 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:42:29" (1/3) ...
[2021-12-06 20:43:13,684 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd09771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:43:13, skipping insertion in model container
[2021-12-06 20:43:13,684 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:42:47" (2/3) ...
[2021-12-06 20:43:13,684 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd09771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:43:13, skipping insertion in model container
[2021-12-06 20:43:13,685 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:43:13" (3/3) ...
[2021-12-06 20:43:13,685 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label53.c
[2021-12-06 20:43:13,689 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 20:43:13,689 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 20:43:13,753 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 20:43:13,760 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 20:43:13,760 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 20:43:13,883 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:43:14,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10147
[2021-12-06 20:43:14,572 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:43:14,578 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 20:43:14,580 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:43:14,586 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:43:14,592 INFO  L85        PathProgramCache]: Analyzing trace with hash -1418695574, now seen corresponding path program 1 times
[2021-12-06 20:43:14,598 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:43:14,598 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585478880]
[2021-12-06 20:43:14,601 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:43:14,602 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:43:16,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:43:38,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:43:38,737 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:43:38,738 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585478880]
[2021-12-06 20:43:38,738 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585478880] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:43:38,738 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:43:38,740 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-06 20:43:38,741 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525210686]
[2021-12-06 20:43:38,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:43:38,754 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-06 20:43:38,754 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:43:38,773 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-06 20:43:38,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-12-06 20:43:38,798 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 5 states, 5 states have (on average 2029.2) internal successors, (10146), 4 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:36,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:44:36,728 INFO  L93              Difference]: Finished difference Result 51091 states and 101806 transitions.
[2021-12-06 20:44:36,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-12-06 20:44:36,731 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2029.2) internal successors, (10146), 4 states have internal predecessors, (10146), 0 states have call successors, (0), 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 10146
[2021-12-06 20:44:36,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:44:36,907 INFO  L225             Difference]: With dead ends: 51091
[2021-12-06 20:44:36,907 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 20:44:36,924 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-12-06 20:44:36,927 INFO  L933         BasicCegarLoop]: 1751 mSDtfsCounter, 41820 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 79529 mSolverCounterSat, 30805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41820 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 110334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30805 IncrementalHoareTripleChecker+Valid, 79529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time
[2021-12-06 20:44:36,928 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [41820 Valid, 1970 Invalid, 110334 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30805 Valid, 79529 Invalid, 0 Unknown, 0 Unchecked, 56.6s Time]
[2021-12-06 20:44:36,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 20:44:37,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 20:44:37,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.455879106052057) internal successors, (59346), 40763 states have internal predecessors, (59346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:37,629 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59346 transitions.
[2021-12-06 20:44:37,630 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59346 transitions. Word has length 10146
[2021-12-06 20:44:37,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:44:37,642 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59346 transitions.
[2021-12-06 20:44:37,644 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2029.2) internal successors, (10146), 4 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:44:37,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59346 transitions.
[2021-12-06 20:44:38,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13047
[2021-12-06 20:44:38,644 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:44:38,654 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:44:38,655 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 20:44:38,656 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:44:38,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:44:38,660 INFO  L85        PathProgramCache]: Analyzing trace with hash 2026652609, now seen corresponding path program 1 times
[2021-12-06 20:44:38,660 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:44:38,660 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110282393]
[2021-12-06 20:44:38,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:44:38,661 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:44:39,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:45:10,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:45:10,544 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:45:10,544 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110282393]
[2021-12-06 20:45:10,544 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110282393] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:45:10,544 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:45:10,546 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 20:45:10,546 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074886663]
[2021-12-06 20:45:10,546 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:45:10,554 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:45:10,555 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:45:10,555 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:45:10,555 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:45:10,558 INFO  L87              Difference]: Start difference. First operand 40764 states and 59346 transitions. Second operand  has 3 states, 3 states have (on average 4348.666666666667) internal successors, (13046), 3 states have internal predecessors, (13046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:45:35,280 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:45:35,280 INFO  L93              Difference]: Finished difference Result 91716 states and 147433 transitions.
[2021-12-06 20:45:35,280 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:45:35,282 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4348.666666666667) internal successors, (13046), 3 states have internal predecessors, (13046), 0 states have call successors, (0), 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 13046
[2021-12-06 20:45:35,284 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:45:35,347 INFO  L225             Difference]: With dead ends: 91716
[2021-12-06 20:45:35,347 INFO  L226             Difference]: Without dead ends: 61144
[2021-12-06 20:45:35,369 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:45:35,370 INFO  L933         BasicCegarLoop]: 16872 mSDtfsCounter, 10223 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32573 mSolverCounterSat, 9041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10223 SdHoareTripleChecker+Valid, 16922 SdHoareTripleChecker+Invalid, 41614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9041 IncrementalHoareTripleChecker+Valid, 32573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time
[2021-12-06 20:45:35,371 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10223 Valid, 16922 Invalid, 41614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9041 Valid, 32573 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time]
[2021-12-06 20:45:35,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61144 states.
[2021-12-06 20:45:35,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61144 to 61144.
[2021-12-06 20:45:36,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61144 states, 61143 states have (on average 1.4254289125492698) internal successors, (87155), 61143 states have internal predecessors, (87155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:45:36,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61144 states to 61144 states and 87155 transitions.
[2021-12-06 20:45:36,114 INFO  L78                 Accepts]: Start accepts. Automaton has 61144 states and 87155 transitions. Word has length 13046
[2021-12-06 20:45:36,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:45:36,118 INFO  L470      AbstractCegarLoop]: Abstraction has 61144 states and 87155 transitions.
[2021-12-06 20:45:36,120 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4348.666666666667) internal successors, (13046), 3 states have internal predecessors, (13046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:45:36,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 61144 states and 87155 transitions.
[2021-12-06 20:45:37,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13050
[2021-12-06 20:45:37,074 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:45:37,081 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 20:45:37,081 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 20:45:37,081 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:45:37,081 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:45:37,084 INFO  L85        PathProgramCache]: Analyzing trace with hash -1009517607, now seen corresponding path program 1 times
[2021-12-06 20:45:37,084 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:45:37,085 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573326800]
[2021-12-06 20:45:37,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:45:37,086 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:45:38,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:46:05,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 2896 backedges. 2889 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-12-06 20:46:05,540 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:46:05,545 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573326800]
[2021-12-06 20:46:05,545 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573326800] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:46:05,546 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:46:05,547 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:46:05,547 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993082061]
[2021-12-06 20:46:05,548 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:46:05,562 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:46:05,562 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:46:05,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:46:05,563 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:46:05,565 INFO  L87              Difference]: Start difference. First operand 61144 states and 87155 transitions. Second operand  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:46:29,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:46:29,773 INFO  L93              Difference]: Finished difference Result 152856 states and 230860 transitions.
[2021-12-06 20:46:29,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:46:29,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 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 13049
[2021-12-06 20:46:29,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:46:30,054 INFO  L225             Difference]: With dead ends: 152856
[2021-12-06 20:46:30,054 INFO  L226             Difference]: Without dead ends: 101904
[2021-12-06 20:46:30,078 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:46:30,079 INFO  L933         BasicCegarLoop]: 7457 mSDtfsCounter, 9050 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29733 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9050 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 41410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 20:46:30,080 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9050 Valid, 7506 Invalid, 41410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29733 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 20:46:30,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101904 states.
[2021-12-06 20:46:30,921 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101904 to 101904.
[2021-12-06 20:46:30,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101904 states, 101903 states have (on average 1.3898805727014907) internal successors, (141633), 101903 states have internal predecessors, (141633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:46:31,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101904 states to 101904 states and 141633 transitions.
[2021-12-06 20:46:31,133 INFO  L78                 Accepts]: Start accepts. Automaton has 101904 states and 141633 transitions. Word has length 13049
[2021-12-06 20:46:31,137 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:46:31,137 INFO  L470      AbstractCegarLoop]: Abstraction has 101904 states and 141633 transitions.
[2021-12-06 20:46:31,138 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:46:31,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 101904 states and 141633 transitions.
[2021-12-06 20:46:32,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13058
[2021-12-06 20:46:32,291 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:46:32,297 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 20:46:32,298 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 20:46:32,298 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:46:32,298 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:46:32,301 INFO  L85        PathProgramCache]: Analyzing trace with hash 99677482, now seen corresponding path program 1 times
[2021-12-06 20:46:32,301 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:46:32,302 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121650844]
[2021-12-06 20:46:32,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:46:32,303 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:46:33,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:47:02,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 2916 backedges. 2901 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-12-06 20:47:02,824 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:47:02,824 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121650844]
[2021-12-06 20:47:02,824 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121650844] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:47:02,824 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:47:02,826 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:47:02,826 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165778875]
[2021-12-06 20:47:02,826 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:47:02,834 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:47:02,834 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:47:02,834 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:47:02,834 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:47:02,837 INFO  L87              Difference]: Start difference. First operand 101904 states and 141633 transitions. Second operand  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:47:27,458 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:47:27,459 INFO  L93              Difference]: Finished difference Result 275136 states and 394294 transitions.
[2021-12-06 20:47:27,459 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:47:27,460 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 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 13057
[2021-12-06 20:47:27,464 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:47:27,612 INFO  L225             Difference]: With dead ends: 275136
[2021-12-06 20:47:27,612 INFO  L226             Difference]: Without dead ends: 183424
[2021-12-06 20:47:27,649 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:47:27,650 INFO  L933         BasicCegarLoop]: 5794 mSDtfsCounter, 10804 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27457 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10804 SdHoareTripleChecker+Valid, 5843 SdHoareTripleChecker+Invalid, 40487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 20:47:27,651 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10804 Valid, 5843 Invalid, 40487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27457 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 20:47:27,769 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183424 states.
[2021-12-06 20:47:29,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183424 to 183424.
[2021-12-06 20:47:29,221 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 183424 states, 183423 states have (on average 1.3136793095740447) internal successors, (240959), 183423 states have internal predecessors, (240959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:47:29,645 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 183424 states to 183424 states and 240959 transitions.
[2021-12-06 20:47:29,645 INFO  L78                 Accepts]: Start accepts. Automaton has 183424 states and 240959 transitions. Word has length 13057
[2021-12-06 20:47:29,650 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:47:29,651 INFO  L470      AbstractCegarLoop]: Abstraction has 183424 states and 240959 transitions.
[2021-12-06 20:47:29,653 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:47:29,653 INFO  L276                IsEmpty]: Start isEmpty. Operand 183424 states and 240959 transitions.
[2021-12-06 20:47:30,761 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13061
[2021-12-06 20:47:30,761 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:47:30,767 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:47:30,767 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 20:47:30,768 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:47:30,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:47:30,771 INFO  L85        PathProgramCache]: Analyzing trace with hash 1365212510, now seen corresponding path program 1 times
[2021-12-06 20:47:30,771 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:47:30,771 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391793830]
[2021-12-06 20:47:30,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:47:30,772 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:47:31,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:48:00,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 2918 backedges. 2900 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-12-06 20:48:00,341 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:48:00,342 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391793830]
[2021-12-06 20:48:00,342 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391793830] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:48:00,342 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:48:00,343 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:48:00,344 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087389852]
[2021-12-06 20:48:00,344 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:48:00,351 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:48:00,351 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:48:00,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:48:00,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:48:00,354 INFO  L87              Difference]: Start difference. First operand 183424 states and 240959 transitions. Second operand  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:48:25,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:48:25,612 INFO  L93              Difference]: Finished difference Result 519696 states and 692272 transitions.
[2021-12-06 20:48:25,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:48:25,614 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 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 13060
[2021-12-06 20:48:25,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:48:25,931 INFO  L225             Difference]: With dead ends: 519696
[2021-12-06 20:48:25,931 INFO  L226             Difference]: Without dead ends: 346464
[2021-12-06 20:48:26,007 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:48:26,008 INFO  L933         BasicCegarLoop]: 9490 mSDtfsCounter, 7750 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31879 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7750 SdHoareTripleChecker+Valid, 9539 SdHoareTripleChecker+Invalid, 42380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 20:48:26,009 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7750 Valid, 9539 Invalid, 42380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31879 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 20:48:26,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 346464 states.
[2021-12-06 20:48:28,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 346464 to 346464.
[2021-12-06 20:48:29,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 346464 states, 346463 states have (on average 1.2524367681397437) internal successors, (433923), 346463 states have internal predecessors, (433923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:48:29,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346464 states to 346464 states and 433923 transitions.
[2021-12-06 20:48:29,728 INFO  L78                 Accepts]: Start accepts. Automaton has 346464 states and 433923 transitions. Word has length 13060
[2021-12-06 20:48:29,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:48:29,730 INFO  L470      AbstractCegarLoop]: Abstraction has 346464 states and 433923 transitions.
[2021-12-06 20:48:29,731 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4347.666666666667) internal successors, (13043), 2 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:48:29,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 346464 states and 433923 transitions.
[2021-12-06 20:48:31,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13093
[2021-12-06 20:48:31,121 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:48:31,123 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 20:48:31,123 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 20:48:31,123 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:48:31,124 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:48:31,125 INFO  L85        PathProgramCache]: Analyzing trace with hash -1945036416, now seen corresponding path program 1 times
[2021-12-06 20:48:31,125 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:48:31,125 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093018762]
[2021-12-06 20:48:31,126 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:48:31,126 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:48:32,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:49:00,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 2989 backedges. 2981 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-12-06 20:49:00,866 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:49:00,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093018762]
[2021-12-06 20:49:00,866 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093018762] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:49:00,866 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:49:00,868 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 20:49:00,868 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543292127]
[2021-12-06 20:49:00,868 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:49:00,873 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:49:00,874 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:49:00,874 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:49:00,874 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:49:00,876 INFO  L87              Difference]: Start difference. First operand 346464 states and 433923 transitions. Second operand  has 3 states, 3 states have (on average 4361.666666666667) internal successors, (13085), 3 states have internal predecessors, (13085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:49:28,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:49:28,732 INFO  L93              Difference]: Finished difference Result 1008816 states and 1271164 transitions.
[2021-12-06 20:49:28,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:49:28,734 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4361.666666666667) internal successors, (13085), 3 states have internal predecessors, (13085), 0 states have call successors, (0), 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 13092
[2021-12-06 20:49:28,736 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:49:29,470 INFO  L225             Difference]: With dead ends: 1008816
[2021-12-06 20:49:29,470 INFO  L226             Difference]: Without dead ends: 672544
[2021-12-06 20:49:29,619 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:49:29,620 INFO  L933         BasicCegarLoop]: 19101 mSDtfsCounter, 10165 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35286 mSolverCounterSat, 7698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10165 SdHoareTripleChecker+Valid, 19152 SdHoareTripleChecker+Invalid, 42984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7698 IncrementalHoareTripleChecker+Valid, 35286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time
[2021-12-06 20:49:29,620 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10165 Valid, 19152 Invalid, 42984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7698 Valid, 35286 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time]
[2021-12-06 20:49:30,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 672544 states.
[2021-12-06 20:49:35,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 672544 to 672544.
[2021-12-06 20:49:35,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 672544 states, 672543 states have (on average 1.184428356253801) internal successors, (796579), 672543 states have internal predecessors, (796579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:49:36,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 672544 states to 672544 states and 796579 transitions.
[2021-12-06 20:49:36,654 INFO  L78                 Accepts]: Start accepts. Automaton has 672544 states and 796579 transitions. Word has length 13092
[2021-12-06 20:49:36,655 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:49:36,655 INFO  L470      AbstractCegarLoop]: Abstraction has 672544 states and 796579 transitions.
[2021-12-06 20:49:36,657 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4361.666666666667) internal successors, (13085), 3 states have internal predecessors, (13085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:49:36,657 INFO  L276                IsEmpty]: Start isEmpty. Operand 672544 states and 796579 transitions.
[2021-12-06 20:49:38,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13135
[2021-12-06 20:49:38,481 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:49:38,483 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 20:49:38,483 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 20:49:38,484 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:49:38,484 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:49:38,485 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583839401, now seen corresponding path program 1 times
[2021-12-06 20:49:38,485 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:49:38,485 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274273372]
[2021-12-06 20:49:38,486 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:49:38,486 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:49:39,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:50:08,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 3073 backedges. 2981 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2021-12-06 20:50:08,598 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:50:08,598 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274273372]
[2021-12-06 20:50:08,598 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274273372] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:50:08,598 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:50:08,600 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:50:08,600 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768019146]
[2021-12-06 20:50:08,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:50:08,604 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:50:08,605 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:50:08,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:50:08,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:50:08,607 INFO  L87              Difference]: Start difference. First operand 672544 states and 796579 transitions. Second operand  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:50:36,746 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:50:36,746 INFO  L93              Difference]: Finished difference Result 1976866 states and 2348714 transitions.
[2021-12-06 20:50:36,747 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:50:36,749 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 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 13134
[2021-12-06 20:50:36,750 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:50:38,267 INFO  L225             Difference]: With dead ends: 1976866
[2021-12-06 20:50:38,267 INFO  L226             Difference]: Without dead ends: 1314514
[2021-12-06 20:50:38,509 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:50:38,510 INFO  L933         BasicCegarLoop]: 5572 mSDtfsCounter, 10468 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28952 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10468 SdHoareTripleChecker+Valid, 5621 SdHoareTripleChecker+Invalid, 40710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 20:50:38,510 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10468 Valid, 5621 Invalid, 40710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28952 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 20:50:39,697 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1314514 states.
[2021-12-06 20:50:49,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314514 to 1314514.
[2021-12-06 20:50:50,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1314514 states, 1314513 states have (on average 1.143584734422558) internal successors, (1503257), 1314513 states have internal predecessors, (1503257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:50:53,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1314514 states to 1314514 states and 1503257 transitions.
[2021-12-06 20:50:53,119 INFO  L78                 Accepts]: Start accepts. Automaton has 1314514 states and 1503257 transitions. Word has length 13134
[2021-12-06 20:50:53,121 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:50:53,121 INFO  L470      AbstractCegarLoop]: Abstraction has 1314514 states and 1503257 transitions.
[2021-12-06 20:50:53,123 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4348.0) internal successors, (13044), 2 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:50:53,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 1314514 states and 1503257 transitions.
[2021-12-06 20:50:55,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13218
[2021-12-06 20:50:55,757 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:50:55,759 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 20:50:55,759 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 20:50:55,760 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:50:55,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:50:55,762 INFO  L85        PathProgramCache]: Analyzing trace with hash 1738068764, now seen corresponding path program 1 times
[2021-12-06 20:50:55,763 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:50:55,763 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017826794]
[2021-12-06 20:50:55,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:50:55,764 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:50:57,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:51:26,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 3346 backedges. 3138 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2021-12-06 20:51:26,793 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:51:26,793 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017826794]
[2021-12-06 20:51:26,793 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017826794] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:51:26,793 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:51:26,795 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:51:26,795 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685583855]
[2021-12-06 20:51:26,795 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:51:26,799 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:51:26,800 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:51:26,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:51:26,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:51:26,803 INFO  L87              Difference]: Start difference. First operand 1314514 states and 1503257 transitions. Second operand  has 3 states, 3 states have (on average 4348.333333333333) internal successors, (13045), 2 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)