./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label26.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_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/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_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/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_1564c3e0-473e-4098-87d4-a139a61ed799/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 99ca606f39e8e89c81ae97710d3cffb62ce706661ab0895e651aaa8a954b23f1
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 17:27:15,954 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 17:27:15,955 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 17:27:15,977 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 17:27:15,978 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 17:27:15,979 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 17:27:15,980 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 17:27:15,982 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 17:27:15,983 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 17:27:15,984 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 17:27:15,985 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 17:27:15,986 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 17:27:15,986 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 17:27:15,987 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 17:27:15,988 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 17:27:15,989 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 17:27:15,990 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 17:27:15,991 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 17:27:15,992 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 17:27:15,994 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 17:27:15,995 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 17:27:15,996 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 17:27:15,997 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 17:27:15,998 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 17:27:16,001 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 17:27:16,001 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 17:27:16,001 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 17:27:16,002 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 17:27:16,003 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 17:27:16,003 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 17:27:16,004 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 17:27:16,004 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 17:27:16,005 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 17:27:16,006 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 17:27:16,007 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 17:27:16,007 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 17:27:16,007 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 17:27:16,007 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 17:27:16,008 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 17:27:16,008 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 17:27:16,009 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 17:27:16,009 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 17:27:16,026 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 17:27:16,026 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 17:27:16,026 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 17:27:16,026 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 17:27:16,027 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 17:27:16,027 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 17:27:16,028 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 17:27:16,028 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 17:27:16,028 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 17:27:16,029 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 17:27:16,029 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 17:27:16,030 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 17:27:16,030 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 17:27:16,031 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 17:27:16,031 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 17:27:16,031 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 17:27:16,031 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 17:27:16,031 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_1564c3e0-473e-4098-87d4-a139a61ed799/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_1564c3e0-473e-4098-87d4-a139a61ed799/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 -> 99ca606f39e8e89c81ae97710d3cffb62ce706661ab0895e651aaa8a954b23f1
[2021-12-06 17:27:16,200 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 17:27:16,215 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 17:27:16,217 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 17:27:16,217 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 17:27:16,218 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 17:27:16,219 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label26.c
[2021-12-06 17:27:16,264 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/data/81b2145d5/4388dea05a76438c9217b5f85c335328/FLAGa2a156e26
[2021-12-06 17:27:17,584 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 17:27:17,585 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/sv-benchmarks/c/eca-rers2012/Problem07_label26.c
[2021-12-06 17:27:17,751 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/data/81b2145d5/4388dea05a76438c9217b5f85c335328/FLAGa2a156e26
[2021-12-06 17:27:17,787 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/data/81b2145d5/4388dea05a76438c9217b5f85c335328
[2021-12-06 17:27:17,789 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 17:27:17,791 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 17:27:17,792 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 17:27:17,792 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 17:27:17,795 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 17:27:17,795 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:27:17" (1/1) ...
[2021-12-06 17:27:17,796 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414ee9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:17, skipping insertion in model container
[2021-12-06 17:27:17,796 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:27:17" (1/1) ...
[2021-12-06 17:27:17,802 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 17:27:18,510 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 17:27:28,513 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_1564c3e0-473e-4098-87d4-a139a61ed799/sv-benchmarks/c/eca-rers2012/Problem07_label26.c[2775806,2775819]
[2021-12-06 17:27:28,578 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 17:27:28,584 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 17:27:34,531 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_1564c3e0-473e-4098-87d4-a139a61ed799/sv-benchmarks/c/eca-rers2012/Problem07_label26.c[2775806,2775819]
[2021-12-06 17:27:34,534 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 17:27:35,235 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 17:27:35,235 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35 WrapperNode
[2021-12-06 17:27:35,235 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 17:27:35,236 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 17:27:35,236 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 17:27:35,236 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 17:27:35,243 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:35,670 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:37,075 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 17:27:37,075 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 17:27:37,075 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 17:27:37,075 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 17:27:37,076 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 17:27:37,082 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:37,082 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:37,335 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:37,335 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:37,946 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:38,169 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:38,290 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:38,597 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 17:27:38,598 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 17:27:38,598 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 17:27:38,598 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 17:27:38,599 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (1/1) ...
[2021-12-06 17:27:38,605 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 17:27:38,614 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 17:27:38,625 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 17:27:38,627 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1564c3e0-473e-4098-87d4-a139a61ed799/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 17:27:38,655 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 17:27:38,655 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 17:27:38,655 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 17:27:38,655 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 17:27:38,746 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 17:27:38,747 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 17:28:02,219 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 17:28:02,264 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 17:28:02,264 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 17:28:02,273 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:28:02 BoogieIcfgContainer
[2021-12-06 17:28:02,273 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 17:28:02,275 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 17:28:02,275 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 17:28:02,277 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 17:28:02,277 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:27:17" (1/3) ...
[2021-12-06 17:28:02,278 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421036fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:28:02, skipping insertion in model container
[2021-12-06 17:28:02,278 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:35" (2/3) ...
[2021-12-06 17:28:02,278 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421036fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:28:02, skipping insertion in model container
[2021-12-06 17:28:02,278 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:28:02" (3/3) ...
[2021-12-06 17:28:02,279 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label26.c
[2021-12-06 17:28:02,283 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 17:28:02,283 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 17:28:02,341 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 17:28:02,346 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 17:28:02,346 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 17:28:02,460 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 17:28:03,184 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10140
[2021-12-06 17:28:03,184 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:28:03,190 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 17:28:03,193 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:28:03,206 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:28:03,212 INFO  L85        PathProgramCache]: Analyzing trace with hash -1338313007, now seen corresponding path program 1 times
[2021-12-06 17:28:03,219 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:28:03,219 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800945269]
[2021-12-06 17:28:03,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:28:03,223 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:28:04,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:28:25,664 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 17:28:25,665 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:28:25,665 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800945269]
[2021-12-06 17:28:25,665 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800945269] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:28:25,666 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:28:25,667 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:28:25,668 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968193380]
[2021-12-06 17:28:25,669 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:28:25,680 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:28:25,680 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:28:25,698 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:28:25,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:28:25,722 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 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 0 states have call successors, (0), 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 17:29:06,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:29:06,430 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2021-12-06 17:29:06,430 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-06 17:29:06,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 0 states have call successors, (0), 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 10139
[2021-12-06 17:29:06,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:29:06,575 INFO  L225             Difference]: With dead ends: 40898
[2021-12-06 17:29:06,575 INFO  L226             Difference]: Without dead ends: 30574
[2021-12-06 17:29:06,591 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-06 17:29:06,593 INFO  L933         BasicCegarLoop]: 5139 mSDtfsCounter, 22276 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22276 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time
[2021-12-06 17:29:06,594 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22276 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 39.9s Time]
[2021-12-06 17:29:06,641 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2021-12-06 17:29:07,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2021-12-06 17:29:07,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 0 states have call successors, (0), 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 17:29:07,171 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2021-12-06 17:29:07,172 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10139
[2021-12-06 17:29:07,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:29:07,200 INFO  L470      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2021-12-06 17:29:07,202 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2534.75) internal successors, (10139), 3 states have internal predecessors, (10139), 0 states have call successors, (0), 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 17:29:07,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2021-12-06 17:29:08,159 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13039
[2021-12-06 17:29:08,159 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:29:08,168 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2021-12-06 17:29:08,169 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 17:29:08,169 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:29:08,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:29:08,173 INFO  L85        PathProgramCache]: Analyzing trace with hash 377012792, now seen corresponding path program 1 times
[2021-12-06 17:29:08,173 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:29:08,174 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140976981]
[2021-12-06 17:29:08,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:29:08,175 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:29:09,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:29:42,405 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-12-06 17:29:42,405 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:29:42,406 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140976981]
[2021-12-06 17:29:42,406 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140976981] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:29:42,406 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:29:42,408 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:29:42,408 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580419324]
[2021-12-06 17:29:42,408 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:29:42,428 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:29:42,428 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:29:42,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:29:42,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:29:42,432 INFO  L87              Difference]: Start difference. First operand 30574 states and 45754 transitions. Second operand  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:30:05,979 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:30:05,979 INFO  L93              Difference]: Finished difference Result 71336 states and 116865 transitions.
[2021-12-06 17:30:05,979 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:30:05,981 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 13038
[2021-12-06 17:30:05,983 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:30:06,046 INFO  L225             Difference]: With dead ends: 71336
[2021-12-06 17:30:06,047 INFO  L226             Difference]: Without dead ends: 50954
[2021-12-06 17:30:06,062 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 17:30:06,063 INFO  L933         BasicCegarLoop]: 4817 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 17:30:06,063 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 4866 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 17:30:06,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50954 states.
[2021-12-06 17:30:06,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50954 to 50954.
[2021-12-06 17:30:06,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50954 states, 50953 states have (on average 1.4546935411065098) internal successors, (74121), 50953 states have internal predecessors, (74121), 0 states have call successors, (0), 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 17:30:06,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 74121 transitions.
[2021-12-06 17:30:06,734 INFO  L78                 Accepts]: Start accepts. Automaton has 50954 states and 74121 transitions. Word has length 13038
[2021-12-06 17:30:06,737 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:30:06,737 INFO  L470      AbstractCegarLoop]: Abstraction has 50954 states and 74121 transitions.
[2021-12-06 17:30:06,739 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:30:06,739 INFO  L276                IsEmpty]: Start isEmpty. Operand 50954 states and 74121 transitions.
[2021-12-06 17:30:07,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13040
[2021-12-06 17:30:07,779 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:30:07,786 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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[2021-12-06 17:30:07,786 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 17:30:07,786 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:30:07,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:30:07,790 INFO  L85        PathProgramCache]: Analyzing trace with hash 1445372762, now seen corresponding path program 1 times
[2021-12-06 17:30:07,790 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:30:07,790 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62418457]
[2021-12-06 17:30:07,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:30:07,791 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:30:09,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:30:40,328 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 17:30:40,329 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:30:40,329 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62418457]
[2021-12-06 17:30:40,329 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62418457] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:30:40,329 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:30:40,331 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:30:40,331 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766097711]
[2021-12-06 17:30:40,331 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:30:40,339 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:30:40,339 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:30:40,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:30:40,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:30:40,342 INFO  L87              Difference]: Start difference. First operand 50954 states and 74121 transitions. Second operand  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 3 states have internal predecessors, (13039), 0 states have call successors, (0), 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 17:31:03,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:31:03,275 INFO  L93              Difference]: Finished difference Result 112096 states and 166188 transitions.
[2021-12-06 17:31:03,275 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:31:03,277 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 3 states have internal predecessors, (13039), 0 states have call successors, (0), 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 13039
[2021-12-06 17:31:03,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:31:03,359 INFO  L225             Difference]: With dead ends: 112096
[2021-12-06 17:31:03,360 INFO  L226             Difference]: Without dead ends: 71334
[2021-12-06 17:31:03,391 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 17:31:03,392 INFO  L933         BasicCegarLoop]: 18209 mSDtfsCounter, 10210 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33598 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 37351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time
[2021-12-06 17:31:03,392 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10210 Valid, 18260 Invalid, 37351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33598 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time]
[2021-12-06 17:31:03,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71334 states.
[2021-12-06 17:31:03,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71334 to 71334.
[2021-12-06 17:31:04,029 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71334 states, 71333 states have (on average 1.4101607951439026) internal successors, (100591), 71333 states have internal predecessors, (100591), 0 states have call successors, (0), 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 17:31:04,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71334 states to 71334 states and 100591 transitions.
[2021-12-06 17:31:04,107 INFO  L78                 Accepts]: Start accepts. Automaton has 71334 states and 100591 transitions. Word has length 13039
[2021-12-06 17:31:04,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:31:04,111 INFO  L470      AbstractCegarLoop]: Abstraction has 71334 states and 100591 transitions.
[2021-12-06 17:31:04,113 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 3 states have internal predecessors, (13039), 0 states have call successors, (0), 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 17:31:04,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 71334 states and 100591 transitions.
[2021-12-06 17:31:05,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13046
[2021-12-06 17:31:05,143 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:31:05,149 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:31:05,150 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 17:31:05,150 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:31:05,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:31:05,154 INFO  L85        PathProgramCache]: Analyzing trace with hash 282302409, now seen corresponding path program 1 times
[2021-12-06 17:31:05,154 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:31:05,154 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855297333]
[2021-12-06 17:31:05,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:31:05,155 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:31:06,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:31:38,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-12-06 17:31:38,655 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:31:38,655 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855297333]
[2021-12-06 17:31:38,655 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855297333] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:31:38,656 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:31:38,657 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:31:38,658 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052582110]
[2021-12-06 17:31:38,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:31:38,666 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:31:38,667 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:31:38,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:31:38,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:31:38,670 INFO  L87              Difference]: Start difference. First operand 71334 states and 100591 transitions. Second operand  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:32:02,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:32:02,612 INFO  L93              Difference]: Finished difference Result 193616 states and 281376 transitions.
[2021-12-06 17:32:02,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:32:02,614 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 13045
[2021-12-06 17:32:02,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:32:02,725 INFO  L225             Difference]: With dead ends: 193616
[2021-12-06 17:32:02,725 INFO  L226             Difference]: Without dead ends: 132474
[2021-12-06 17:32:02,754 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 17:32:02,755 INFO  L933         BasicCegarLoop]: 6718 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27706 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 40736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 17:32:02,756 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10129 Valid, 6767 Invalid, 40736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27706 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 17:32:02,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132474 states.
[2021-12-06 17:32:03,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132474 to 132474.
[2021-12-06 17:32:03,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132474 states, 132473 states have (on average 1.319838759596295) internal successors, (174843), 132473 states have internal predecessors, (174843), 0 states have call successors, (0), 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 17:32:04,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132474 states to 132474 states and 174843 transitions.
[2021-12-06 17:32:04,067 INFO  L78                 Accepts]: Start accepts. Automaton has 132474 states and 174843 transitions. Word has length 13045
[2021-12-06 17:32:04,070 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:32:04,070 INFO  L470      AbstractCegarLoop]: Abstraction has 132474 states and 174843 transitions.
[2021-12-06 17:32:04,072 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:32:04,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 132474 states and 174843 transitions.
[2021-12-06 17:32:05,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13056
[2021-12-06 17:32:05,282 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:32:05,288 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2021-12-06 17:32:05,289 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 17:32:05,289 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:32:05,289 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:32:05,293 INFO  L85        PathProgramCache]: Analyzing trace with hash -507759486, now seen corresponding path program 1 times
[2021-12-06 17:32:05,293 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:32:05,293 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111657928]
[2021-12-06 17:32:05,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:32:05,294 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:32:06,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:32:35,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 17:32:35,231 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:32:35,231 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111657928]
[2021-12-06 17:32:35,232 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111657928] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:32:35,232 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:32:35,233 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:32:35,233 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170984687]
[2021-12-06 17:32:35,234 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:32:35,241 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:32:35,242 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:32:35,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:32:35,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:32:35,244 INFO  L87              Difference]: Start difference. First operand 132474 states and 174843 transitions. Second operand  has 4 states, 4 states have (on average 3263.75) internal successors, (13055), 3 states have internal predecessors, (13055), 0 states have call successors, (0), 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 17:33:12,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:33:12,443 INFO  L93              Difference]: Finished difference Result 458556 states and 616640 transitions.
[2021-12-06 17:33:12,444 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-06 17:33:12,445 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3263.75) internal successors, (13055), 3 states have internal predecessors, (13055), 0 states have call successors, (0), 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 13055
[2021-12-06 17:33:12,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:33:12,766 INFO  L225             Difference]: With dead ends: 458556
[2021-12-06 17:33:12,767 INFO  L226             Difference]: Without dead ends: 336274
[2021-12-06 17:33:12,821 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:33:12,822 INFO  L933         BasicCegarLoop]: 5415 mSDtfsCounter, 26549 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40999 mSolverCounterSat, 28388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26549 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 69387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28388 IncrementalHoareTripleChecker+Valid, 40999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time
[2021-12-06 17:33:12,823 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [26549 Valid, 5513 Invalid, 69387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28388 Valid, 40999 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time]
[2021-12-06 17:33:13,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336274 states.
[2021-12-06 17:33:15,737 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336274 to 336274.
[2021-12-06 17:33:15,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336274 states, 336273 states have (on average 1.2261376916969249) internal successors, (412317), 336273 states have internal predecessors, (412317), 0 states have call successors, (0), 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 17:33:16,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336274 states to 336274 states and 412317 transitions.
[2021-12-06 17:33:16,424 INFO  L78                 Accepts]: Start accepts. Automaton has 336274 states and 412317 transitions. Word has length 13055
[2021-12-06 17:33:16,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:33:16,426 INFO  L470      AbstractCegarLoop]: Abstraction has 336274 states and 412317 transitions.
[2021-12-06 17:33:16,427 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3263.75) internal successors, (13055), 3 states have internal predecessors, (13055), 0 states have call successors, (0), 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 17:33:16,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 336274 states and 412317 transitions.
[2021-12-06 17:33:17,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13139
[2021-12-06 17:33:17,670 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:33:17,673 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:33:17,673 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 17:33:17,673 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:33:17,673 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:33:17,675 INFO  L85        PathProgramCache]: Analyzing trace with hash 1137143936, now seen corresponding path program 1 times
[2021-12-06 17:33:17,675 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:33:17,675 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774819491]
[2021-12-06 17:33:17,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:33:17,676 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:33:18,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:33:47,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 3091 backedges. 3087 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-12-06 17:33:47,955 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:33:47,955 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774819491]
[2021-12-06 17:33:47,955 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774819491] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:33:47,955 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:33:47,958 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:33:47,958 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346165924]
[2021-12-06 17:33:47,958 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:33:47,966 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:33:47,966 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:33:47,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:33:47,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:33:47,969 INFO  L87              Difference]: Start difference. First operand 336274 states and 412317 transitions. Second operand  has 4 states, 4 states have (on average 3283.75) internal successors, (13135), 3 states have internal predecessors, (13135), 0 states have call successors, (0), 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 17:34:29,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:34:29,758 INFO  L93              Difference]: Finished difference Result 1069956 states and 1329062 transitions.
[2021-12-06 17:34:29,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-06 17:34:29,761 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3283.75) internal successors, (13135), 3 states have internal predecessors, (13135), 0 states have call successors, (0), 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 13138
[2021-12-06 17:34:29,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:34:30,651 INFO  L225             Difference]: With dead ends: 1069956
[2021-12-06 17:34:30,651 INFO  L226             Difference]: Without dead ends: 743874
[2021-12-06 17:34:30,782 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:34:30,783 INFO  L933         BasicCegarLoop]: 7954 mSDtfsCounter, 17478 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 58154 mSolverCounterSat, 18126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17478 SdHoareTripleChecker+Valid, 8079 SdHoareTripleChecker+Invalid, 76280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18126 IncrementalHoareTripleChecker+Valid, 58154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time
[2021-12-06 17:34:30,783 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [17478 Valid, 8079 Invalid, 76280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18126 Valid, 58154 Invalid, 0 Unknown, 0 Unchecked, 38.9s Time]
[2021-12-06 17:34:31,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 743874 states.
[2021-12-06 17:34:37,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 743874 to 743874.
[2021-12-06 17:34:37,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 743874 states, 743873 states have (on average 1.1708517448542963) internal successors, (870965), 743873 states have internal predecessors, (870965), 0 states have call successors, (0), 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 17:34:38,522 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 743874 states to 743874 states and 870965 transitions.
[2021-12-06 17:34:38,522 INFO  L78                 Accepts]: Start accepts. Automaton has 743874 states and 870965 transitions. Word has length 13138
[2021-12-06 17:34:38,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:34:38,525 INFO  L470      AbstractCegarLoop]: Abstraction has 743874 states and 870965 transitions.
[2021-12-06 17:34:38,526 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3283.75) internal successors, (13135), 3 states have internal predecessors, (13135), 0 states have call successors, (0), 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 17:34:38,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 743874 states and 870965 transitions.
[2021-12-06 17:34:40,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13222
[2021-12-06 17:34:40,406 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:34:40,409 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-06 17:34:40,410 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 17:34:40,410 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:34:40,410 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:34:40,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 1943385217, now seen corresponding path program 1 times
[2021-12-06 17:34:40,412 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:34:40,412 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005603463]
[2021-12-06 17:34:40,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:34:40,413 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:34:41,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:35:10,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 3254 backedges. 3068 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2021-12-06 17:35:10,869 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:35:10,869 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005603463]
[2021-12-06 17:35:10,869 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005603463] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:35:10,869 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:35:10,871 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:35:10,871 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676920444]
[2021-12-06 17:35:10,871 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:35:10,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:35:10,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:35:10,876 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:35:10,876 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:35:10,879 INFO  L87              Difference]: Start difference. First operand 743874 states and 870965 transitions. Second operand  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:35:39,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:35:39,078 INFO  L93              Difference]: Finished difference Result 2211236 states and 2592498 transitions.
[2021-12-06 17:35:39,078 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:35:39,080 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 13221
[2021-12-06 17:35:39,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:35:40,812 INFO  L225             Difference]: With dead ends: 2211236
[2021-12-06 17:35:40,812 INFO  L226             Difference]: Without dead ends: 1477554
[2021-12-06 17:35:41,061 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 17:35:41,062 INFO  L933         BasicCegarLoop]: 6208 mSDtfsCounter, 9694 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30541 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9694 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 41042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 17:35:41,062 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9694 Valid, 6257 Invalid, 41042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30541 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 17:35:42,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1477554 states.
[2021-12-06 17:35:54,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477554 to 1477554.
[2021-12-06 17:35:55,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1477554 states, 1477553 states have (on average 1.1311425038560377) internal successors, (1671323), 1477553 states have internal predecessors, (1671323), 0 states have call successors, (0), 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 17:35:57,556 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1477554 states to 1477554 states and 1671323 transitions.
[2021-12-06 17:35:57,557 INFO  L78                 Accepts]: Start accepts. Automaton has 1477554 states and 1671323 transitions. Word has length 13221
[2021-12-06 17:35:57,559 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:35:57,560 INFO  L470      AbstractCegarLoop]: Abstraction has 1477554 states and 1671323 transitions.
[2021-12-06 17:35:57,562 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4345.333333333333) internal successors, (13036), 2 states have internal predecessors, (13036), 0 states have call successors, (0), 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 17:35:57,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 1477554 states and 1671323 transitions.
[2021-12-06 17:36:00,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13449
[2021-12-06 17:36:00,127 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:36:00,129 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 17:36:00,129 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 17:36:00,129 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:36:00,130 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:36:00,131 INFO  L85        PathProgramCache]: Analyzing trace with hash -917873240, now seen corresponding path program 1 times
[2021-12-06 17:36:00,131 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:36:00,132 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813030912]
[2021-12-06 17:36:00,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:36:00,133 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:36:01,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat