./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label31.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_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/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_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/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_be83bded-6d49-4bcd-9283-01649ae848f2/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 f83a9c43933e711b1a7beefadeccb1b5638af94004ddd15d91ccaba112a2f806
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-07 00:00:14,779 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-07 00:00:14,780 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-07 00:00:14,802 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-07 00:00:14,803 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-07 00:00:14,804 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-07 00:00:14,805 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-07 00:00:14,807 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-07 00:00:14,808 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-07 00:00:14,809 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-07 00:00:14,810 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-07 00:00:14,811 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-07 00:00:14,811 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-07 00:00:14,812 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-07 00:00:14,813 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-07 00:00:14,814 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-07 00:00:14,815 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-07 00:00:14,816 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-07 00:00:14,817 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-07 00:00:14,819 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-07 00:00:14,821 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-07 00:00:14,822 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-07 00:00:14,824 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-07 00:00:14,825 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-07 00:00:14,829 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-07 00:00:14,829 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-07 00:00:14,830 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-07 00:00:14,831 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-07 00:00:14,831 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-07 00:00:14,832 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-07 00:00:14,833 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-07 00:00:14,834 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-07 00:00:14,834 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-07 00:00:14,835 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-07 00:00:14,836 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-07 00:00:14,837 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-07 00:00:14,837 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-07 00:00:14,837 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-07 00:00:14,838 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-07 00:00:14,839 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-07 00:00:14,839 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-07 00:00:14,840 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-07 00:00:14,863 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-07 00:00:14,863 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-07 00:00:14,863 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-07 00:00:14,863 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-07 00:00:14,864 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-07 00:00:14,864 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-07 00:00:14,865 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-07 00:00:14,865 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-07 00:00:14,865 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-07 00:00:14,865 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-07 00:00:14,866 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-07 00:00:14,866 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-07 00:00:14,866 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-07 00:00:14,866 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-07 00:00:14,866 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-07 00:00:14,867 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-07 00:00:14,868 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-07 00:00:14,868 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-07 00:00:14,868 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-07 00:00:14,868 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 00:00:14,868 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-07 00:00:14,868 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-07 00:00:14,869 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-07 00:00:14,869 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-07 00:00:14,869 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-07 00:00:14,869 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-07 00:00:14,869 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-07 00:00:14,870 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-07 00:00:14,870 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-07 00:00:14,870 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_be83bded-6d49-4bcd-9283-01649ae848f2/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_be83bded-6d49-4bcd-9283-01649ae848f2/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 -> f83a9c43933e711b1a7beefadeccb1b5638af94004ddd15d91ccaba112a2f806
[2021-12-07 00:00:15,057 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-07 00:00:15,072 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-07 00:00:15,073 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-07 00:00:15,074 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-07 00:00:15,075 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-07 00:00:15,076 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label31.c
[2021-12-07 00:00:15,117 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/data/960ddc6a4/92a7021e72374555827b2b218fffbbb3/FLAG45ea207bf
[2021-12-07 00:00:16,501 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-07 00:00:16,501 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/sv-benchmarks/c/eca-rers2012/Problem07_label31.c
[2021-12-07 00:00:16,633 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/data/960ddc6a4/92a7021e72374555827b2b218fffbbb3/FLAG45ea207bf
[2021-12-07 00:00:16,644 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/data/960ddc6a4/92a7021e72374555827b2b218fffbbb3
[2021-12-07 00:00:16,645 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-07 00:00:16,646 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-07 00:00:16,647 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-07 00:00:16,647 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-07 00:00:16,649 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-07 00:00:16,650 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:16" (1/1) ...
[2021-12-07 00:00:16,651 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315d1806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:16, skipping insertion in model container
[2021-12-07 00:00:16,651 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:00:16" (1/1) ...
[2021-12-07 00:00:16,655 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-07 00:00:17,257 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-07 00:00:26,901 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_be83bded-6d49-4bcd-9283-01649ae848f2/sv-benchmarks/c/eca-rers2012/Problem07_label31.c[2768307,2768320]
[2021-12-07 00:00:26,962 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 00:00:26,968 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-07 00:00:32,974 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_be83bded-6d49-4bcd-9283-01649ae848f2/sv-benchmarks/c/eca-rers2012/Problem07_label31.c[2768307,2768320]
[2021-12-07 00:00:32,984 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 00:00:33,644 INFO  L208         MainTranslator]: Completed translation
[2021-12-07 00:00:33,644 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33 WrapperNode
[2021-12-07 00:00:33,644 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-07 00:00:33,645 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-07 00:00:33,645 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-07 00:00:33,645 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-07 00:00:33,650 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:33,949 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,084 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-07 00:00:35,085 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-07 00:00:35,085 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-07 00:00:35,085 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-07 00:00:35,086 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-07 00:00:35,093 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,093 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,347 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,347 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,797 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:35,910 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:36,034 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:36,327 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-07 00:00:36,329 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-07 00:00:36,329 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-07 00:00:36,329 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-07 00:00:36,330 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (1/1) ...
[2021-12-07 00:00:36,337 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 00:00:36,346 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 00:00:36,356 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-07 00:00:36,358 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be83bded-6d49-4bcd-9283-01649ae848f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-07 00:00:36,390 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-07 00:00:36,390 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-07 00:00:36,390 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-07 00:00:36,390 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-07 00:00:36,486 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-07 00:00:36,487 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-07 00:01:00,179 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-07 00:01:00,219 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-07 00:01:00,219 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-07 00:01:00,228 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:01:00 BoogieIcfgContainer
[2021-12-07 00:01:00,228 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-07 00:01:00,229 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-07 00:01:00,229 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-07 00:01:00,232 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-07 00:01:00,232 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:00:16" (1/3) ...
[2021-12-07 00:01:00,232 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba4728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:01:00, skipping insertion in model container
[2021-12-07 00:01:00,232 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:00:33" (2/3) ...
[2021-12-07 00:01:00,233 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba4728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:01:00, skipping insertion in model container
[2021-12-07 00:01:00,233 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:01:00" (3/3) ...
[2021-12-07 00:01:00,234 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label31.c
[2021-12-07 00:01:00,238 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-07 00:01:00,238 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-07 00:01:00,303 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-07 00:01:00,310 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
[2021-12-07 00:01:00,310 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-07 00:01:00,443 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)
[2021-12-07 00:01:01,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10096
[2021-12-07 00:01:01,119 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:01:01,125 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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[2021-12-07 00:01:01,128 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:01:01,139 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:01:01,144 INFO  L85        PathProgramCache]: Analyzing trace with hash -1419885727, now seen corresponding path program 1 times
[2021-12-07 00:01:01,150 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:01:01,151 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710891889]
[2021-12-07 00:01:01,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:01:01,154 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:01:02,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:01:22,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:01:22,035 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:01:22,036 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710891889]
[2021-12-07 00:01:22,036 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710891889] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:01:22,036 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:01:22,038 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:01:22,039 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197495587]
[2021-12-07 00:01:22,040 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:01:22,052 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:01:22,052 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:01:22,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:01:22,071 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:01:22,091 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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)
[2021-12-07 00:01:47,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:01:47,730 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-07 00:01:47,731 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:01:47,734 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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 10095
[2021-12-07 00:01:47,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:01:47,851 INFO  L225             Difference]: With dead ends: 30705
[2021-12-07 00:01:47,851 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-07 00:01:47,864 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
[2021-12-07 00:01:47,867 INFO  L933         BasicCegarLoop]: 4082 mSDtfsCounter, 493 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time
[2021-12-07 00:01:47,868 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time]
[2021-12-07 00:01:47,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-07 00:01:48,271 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-07 00:01:48,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7945346612373057) internal successors, (36578), 20383 states have internal predecessors, (36578), 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)
[2021-12-07 00:01:48,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2021-12-07 00:01:48,351 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10095
[2021-12-07 00:01:48,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:01:48,363 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2021-12-07 00:01:48,365 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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)
[2021-12-07 00:01:48,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2021-12-07 00:01:48,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10100
[2021-12-07 00:01:48,948 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:01:48,953 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:01:48,953 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-07 00:01:48,953 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:01:48,954 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:01:48,957 INFO  L85        PathProgramCache]: Analyzing trace with hash 1145288761, now seen corresponding path program 1 times
[2021-12-07 00:01:48,957 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:01:48,957 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849059914]
[2021-12-07 00:01:48,958 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:01:48,958 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:01:49,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:02:01,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:02:01,386 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:02:01,386 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849059914]
[2021-12-07 00:02:01,386 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849059914] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:02:01,386 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:02:01,388 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:02:01,388 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662170788]
[2021-12-07 00:02:01,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:02:01,401 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:02:01,401 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:02:01,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:02:01,402 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:02:01,405 INFO  L87              Difference]: Start difference. First operand 20384 states and 36578 transitions. Second operand  has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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)
[2021-12-07 00:02:24,614 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:02:24,614 INFO  L93              Difference]: Finished difference Result 61146 states and 109729 transitions.
[2021-12-07 00:02:24,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:02:24,617 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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 10099
[2021-12-07 00:02:24,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:02:24,691 INFO  L225             Difference]: With dead ends: 61146
[2021-12-07 00:02:24,692 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-07 00:02:24,708 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
[2021-12-07 00:02:24,710 INFO  L933         BasicCegarLoop]: 4828 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time
[2021-12-07 00:02:24,710 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13865 Valid, 4877 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time]
[2021-12-07 00:02:24,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-07 00:02:25,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-07 00:02:25,196 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.6070701371341658) internal successors, (65509), 40763 states have internal predecessors, (65509), 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)
[2021-12-07 00:02:25,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 65509 transitions.
[2021-12-07 00:02:25,250 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 65509 transitions. Word has length 10099
[2021-12-07 00:02:25,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:02:25,252 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 65509 transitions.
[2021-12-07 00:02:25,254 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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)
[2021-12-07 00:02:25,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 65509 transitions.
[2021-12-07 00:02:25,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10102
[2021-12-07 00:02:25,843 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:02:25,848 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-07 00:02:25,848 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-07 00:02:25,848 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:02:25,849 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:02:25,852 INFO  L85        PathProgramCache]: Analyzing trace with hash -438961282, now seen corresponding path program 1 times
[2021-12-07 00:02:25,852 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:02:25,852 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953789298]
[2021-12-07 00:02:25,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:02:25,853 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:02:26,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:02:37,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:02:37,460 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:02:37,460 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953789298]
[2021-12-07 00:02:37,460 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953789298] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:02:37,461 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:02:37,462 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:02:37,462 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376253261]
[2021-12-07 00:02:37,462 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:02:37,468 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:02:37,468 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:02:37,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:02:37,469 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:02:37,470 INFO  L87              Difference]: Start difference. First operand 40764 states and 65509 transitions. Second operand  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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)
[2021-12-07 00:03:00,241 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:03:00,241 INFO  L93              Difference]: Finished difference Result 122286 states and 196522 transitions.
[2021-12-07 00:03:00,241 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:03:00,243 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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 10101
[2021-12-07 00:03:00,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:03:00,319 INFO  L225             Difference]: With dead ends: 122286
[2021-12-07 00:03:00,319 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-07 00:03:00,347 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
[2021-12-07 00:03:00,349 INFO  L933         BasicCegarLoop]: 4820 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time
[2021-12-07 00:03:00,349 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 4869 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time]
[2021-12-07 00:03:00,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-07 00:03:00,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-07 00:03:00,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.4645314819130797) internal successors, (119393), 81523 states have internal predecessors, (119393), 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)
[2021-12-07 00:03:01,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 119393 transitions.
[2021-12-07 00:03:01,097 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 119393 transitions. Word has length 10101
[2021-12-07 00:03:01,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:03:01,098 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 119393 transitions.
[2021-12-07 00:03:01,100 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 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)
[2021-12-07 00:03:01,100 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 119393 transitions.
[2021-12-07 00:03:01,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10113
[2021-12-07 00:03:01,829 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:03:01,833 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2021-12-07 00:03:01,833 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-07 00:03:01,834 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:03:01,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:03:01,837 INFO  L85        PathProgramCache]: Analyzing trace with hash 547617573, now seen corresponding path program 1 times
[2021-12-07 00:03:01,837 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:03:01,837 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493630342]
[2021-12-07 00:03:01,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:03:01,838 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:03:02,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:03:14,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-12-07 00:03:14,452 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:03:14,453 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493630342]
[2021-12-07 00:03:14,453 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493630342] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:03:14,453 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:03:14,454 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:03:14,454 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773979266]
[2021-12-07 00:03:14,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:03:14,463 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:03:14,463 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:03:14,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:03:14,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:03:14,466 INFO  L87              Difference]: Start difference. First operand 81524 states and 119393 transitions. Second operand  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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)
[2021-12-07 00:03:38,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:03:38,934 INFO  L93              Difference]: Finished difference Result 244566 states and 358174 transitions.
[2021-12-07 00:03:38,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:03:38,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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 10112
[2021-12-07 00:03:38,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:03:39,098 INFO  L225             Difference]: With dead ends: 244566
[2021-12-07 00:03:39,098 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-07 00:03:39,136 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
[2021-12-07 00:03:39,137 INFO  L933         BasicCegarLoop]: 6091 mSDtfsCounter, 13473 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27528 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13473 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 40558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-07 00:03:39,138 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13473 Valid, 6140 Invalid, 40558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27528 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-07 00:03:39,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-07 00:03:40,437 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-07 00:03:40,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.3309924375778168) internal successors, (217009), 163043 states have internal predecessors, (217009), 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)
[2021-12-07 00:03:40,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 217009 transitions.
[2021-12-07 00:03:40,901 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 217009 transitions. Word has length 10112
[2021-12-07 00:03:40,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:03:40,902 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 217009 transitions.
[2021-12-07 00:03:40,904 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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)
[2021-12-07 00:03:40,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 217009 transitions.
[2021-12-07 00:03:41,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10144
[2021-12-07 00:03:41,696 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:03:41,701 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:03:41,701 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-07 00:03:41,701 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:03:41,702 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:03:41,704 INFO  L85        PathProgramCache]: Analyzing trace with hash -143029209, now seen corresponding path program 1 times
[2021-12-07 00:03:41,704 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:03:41,704 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960716129]
[2021-12-07 00:03:41,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:03:41,705 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:03:42,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:03:52,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:03:52,368 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:03:52,368 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960716129]
[2021-12-07 00:03:52,369 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960716129] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:03:52,369 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:03:52,370 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:03:52,370 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463267746]
[2021-12-07 00:03:52,370 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:03:52,378 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:03:52,379 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:03:52,379 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:03:52,379 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:03:52,381 INFO  L87              Difference]: Start difference. First operand 163044 states and 217009 transitions. Second operand  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 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)
[2021-12-07 00:04:17,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:04:17,287 INFO  L93              Difference]: Finished difference Result 489126 states and 651022 transitions.
[2021-12-07 00:04:17,287 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:04:17,288 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 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 10143
[2021-12-07 00:04:17,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:04:17,642 INFO  L225             Difference]: With dead ends: 489126
[2021-12-07 00:04:17,642 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-07 00:04:17,717 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
[2021-12-07 00:04:17,718 INFO  L933         BasicCegarLoop]: 7313 mSDtfsCounter, 11767 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30511 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11767 SdHoareTripleChecker+Valid, 7363 SdHoareTripleChecker+Invalid, 41592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-07 00:04:17,718 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11767 Valid, 7363 Invalid, 41592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30511 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-07 00:04:17,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-07 00:04:20,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-07 00:04:20,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.2539108141178779) internal successors, (408879), 326083 states have internal predecessors, (408879), 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)
[2021-12-07 00:04:21,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 408879 transitions.
[2021-12-07 00:04:21,364 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 408879 transitions. Word has length 10143
[2021-12-07 00:04:21,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:04:21,366 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 408879 transitions.
[2021-12-07 00:04:21,367 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 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)
[2021-12-07 00:04:21,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 408879 transitions.
[2021-12-07 00:04:22,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10237
[2021-12-07 00:04:22,329 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:04:22,333 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-07 00:04:22,333 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-07 00:04:22,333 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:04:22,334 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:04:22,336 INFO  L85        PathProgramCache]: Analyzing trace with hash 1988709449, now seen corresponding path program 1 times
[2021-12-07 00:04:22,336 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:04:22,336 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322410347]
[2021-12-07 00:04:22,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:04:22,338 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:04:23,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:04:34,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 183 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2021-12-07 00:04:34,515 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:04:34,515 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322410347]
[2021-12-07 00:04:34,515 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322410347] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:04:34,515 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:04:34,517 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:04:34,517 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059191910]
[2021-12-07 00:04:34,517 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:04:34,524 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:04:34,524 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:04:34,524 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:04:34,524 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:04:34,526 INFO  L87              Difference]: Start difference. First operand 326084 states and 408879 transitions. Second operand  has 3 states, 3 states have (on average 3399.0) internal successors, (10197), 2 states have internal predecessors, (10197), 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)
[2021-12-07 00:05:00,549 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:05:00,550 INFO  L93              Difference]: Finished difference Result 978246 states and 1226632 transitions.
[2021-12-07 00:05:00,550 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:05:00,551 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3399.0) internal successors, (10197), 2 states have internal predecessors, (10197), 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 10236
[2021-12-07 00:05:00,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:05:01,348 INFO  L225             Difference]: With dead ends: 978246
[2021-12-07 00:05:01,348 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-07 00:05:01,476 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
[2021-12-07 00:05:01,477 INFO  L933         BasicCegarLoop]: 5914 mSDtfsCounter, 12559 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29825 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12559 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 40859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-07 00:05:01,478 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12559 Valid, 5963 Invalid, 40859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29825 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-07 00:05:01,878 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-07 00:05:07,081 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-07 00:05:07,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1903205180300016) internal successors, (776283), 652163 states have internal predecessors, (776283), 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)
[2021-12-07 00:05:08,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 776283 transitions.
[2021-12-07 00:05:08,525 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 776283 transitions. Word has length 10236
[2021-12-07 00:05:08,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:05:08,525 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 776283 transitions.
[2021-12-07 00:05:08,527 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3399.0) internal successors, (10197), 2 states have internal predecessors, (10197), 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)
[2021-12-07 00:05:08,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 776283 transitions.
[2021-12-07 00:05:09,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10331
[2021-12-07 00:05:09,947 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:05:09,950 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:05:09,950 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-07 00:05:09,950 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:05:09,950 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:05:09,952 INFO  L85        PathProgramCache]: Analyzing trace with hash 1950104280, now seen corresponding path program 1 times
[2021-12-07 00:05:09,952 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:05:09,952 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92372439]
[2021-12-07 00:05:09,953 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:05:09,953 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:05:10,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:05:21,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:05:21,736 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:05:21,736 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92372439]
[2021-12-07 00:05:21,736 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92372439] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:05:21,737 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:05:21,738 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:05:21,738 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64407540]
[2021-12-07 00:05:21,738 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:05:21,742 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:05:21,742 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:05:21,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:05:21,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:05:21,745 INFO  L87              Difference]: Start difference. First operand 652164 states and 776283 transitions. Second operand  has 3 states, 3 states have (on average 3443.3333333333335) internal successors, (10330), 2 states have internal predecessors, (10330), 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)
[2021-12-07 00:05:45,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:05:45,965 INFO  L93              Difference]: Finished difference Result 1304326 states and 1552564 transitions.
[2021-12-07 00:05:45,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:05:45,967 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3443.3333333333335) internal successors, (10330), 2 states have internal predecessors, (10330), 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 10330
[2021-12-07 00:05:45,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:05:46,748 INFO  L225             Difference]: With dead ends: 1304326
[2021-12-07 00:05:46,748 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-07 00:05:47,056 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
[2021-12-07 00:05:47,057 INFO  L933         BasicCegarLoop]: 9997 mSDtfsCounter, 10037 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29586 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10037 SdHoareTripleChecker+Valid, 10046 SdHoareTripleChecker+Invalid, 34411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time
[2021-12-07 00:05:47,057 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10037 Valid, 10046 Invalid, 34411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29586 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time]
[2021-12-07 00:05:47,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-07 00:05:52,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-07 00:05:52,967 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1895845057140624) internal successors, (775803), 652163 states have internal predecessors, (775803), 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)
[2021-12-07 00:05:53,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 775803 transitions.
[2021-12-07 00:05:53,994 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 775803 transitions. Word has length 10330
[2021-12-07 00:05:53,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:05:53,995 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 775803 transitions.
[2021-12-07 00:05:53,996 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3443.3333333333335) internal successors, (10330), 2 states have internal predecessors, (10330), 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)
[2021-12-07 00:05:53,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 775803 transitions.
[2021-12-07 00:05:55,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10571
[2021-12-07 00:05:55,547 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:05:55,549 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2021-12-07 00:05:55,550 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-07 00:05:55,550 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:05:55,550 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:05:55,551 INFO  L85        PathProgramCache]: Analyzing trace with hash -27437203, now seen corresponding path program 1 times
[2021-12-07 00:05:55,551 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:05:55,552 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188965445]
[2021-12-07 00:05:55,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:05:55,552 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:05:56,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:06:07,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 472 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:06:07,738 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:06:07,739 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188965445]
[2021-12-07 00:06:07,739 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188965445] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:06:07,739 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:06:07,740 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:06:07,741 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343020186]
[2021-12-07 00:06:07,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:06:07,746 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:06:07,746 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:06:07,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:06:07,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:06:07,749 INFO  L87              Difference]: Start difference. First operand 652164 states and 775803 transitions. Second operand  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 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)
[2021-12-07 00:06:36,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:06:36,165 INFO  L93              Difference]: Finished difference Result 1956486 states and 2327404 transitions.
[2021-12-07 00:06:36,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:06:36,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 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 10570
[2021-12-07 00:06:36,167 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:06:37,707 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-07 00:06:37,708 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-07 00:06:37,937 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
[2021-12-07 00:06:37,938 INFO  L933         BasicCegarLoop]: 6139 mSDtfsCounter, 12113 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30458 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12113 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 40959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-07 00:06:37,938 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12113 Valid, 6188 Invalid, 40959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30458 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-07 00:06:39,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-07 00:06:49,257 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-07 00:06:49,740 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.143588666304282) internal successors, (1491609), 1304323 states have internal predecessors, (1491609), 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)
[2021-12-07 00:06:52,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1491609 transitions.
[2021-12-07 00:06:52,340 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1491609 transitions. Word has length 10570
[2021-12-07 00:06:52,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:06:52,341 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1491609 transitions.
[2021-12-07 00:06:52,342 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 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)
[2021-12-07 00:06:52,343 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1491609 transitions.
[2021-12-07 00:06:54,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10680
[2021-12-07 00:06:54,447 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:06:54,449 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2021-12-07 00:06:54,450 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-12-07 00:06:54,450 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:06:54,450 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:06:54,452 INFO  L85        PathProgramCache]: Analyzing trace with hash -1058051790, now seen corresponding path program 1 times
[2021-12-07 00:06:54,452 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:06:54,452 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392442063]
[2021-12-07 00:06:54,453 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:06:54,453 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:06:55,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:07:07,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 822 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2021-12-07 00:07:07,417 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:07:07,418 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392442063]
[2021-12-07 00:07:07,418 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392442063] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:07:07,418 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:07:07,419 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:07:07,419 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447427259]
[2021-12-07 00:07:07,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:07:07,423 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:07:07,424 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:07:07,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:07:07,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:07:07,426 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1491609 transitions. Second operand  has 3 states, 3 states have (on average 3508.0) internal successors, (10524), 2 states have internal predecessors, (10524), 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)
[2021-12-07 00:07:34,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:07:34,250 INFO  L93              Difference]: Finished difference Result 2608646 states and 2983216 transitions.
[2021-12-07 00:07:34,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:07:34,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3508.0) internal successors, (10524), 2 states have internal predecessors, (10524), 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 10679
[2021-12-07 00:07:34,252 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:07:35,867 INFO  L225             Difference]: With dead ends: 2608646
[2021-12-07 00:07:35,867 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-07 00:07:36,446 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
[2021-12-07 00:07:36,446 INFO  L933         BasicCegarLoop]: 10012 mSDtfsCounter, 9819 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30736 mSolverCounterSat, 3975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9819 SdHoareTripleChecker+Valid, 10062 SdHoareTripleChecker+Invalid, 34711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3975 IncrementalHoareTripleChecker+Valid, 30736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time
[2021-12-07 00:07:36,447 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9819 Valid, 10062 Invalid, 34711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3975 Valid, 30736 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time]
[2021-12-07 00:07:37,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.