./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.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_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/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_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/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_840cf674-f5a3-46fe-8363-b41de992600f/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 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-07 01:49:44,047 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-07 01:49:44,049 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-07 01:49:44,079 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-07 01:49:44,079 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-07 01:49:44,080 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-07 01:49:44,082 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-07 01:49:44,084 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-07 01:49:44,086 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-07 01:49:44,087 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-07 01:49:44,088 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-07 01:49:44,090 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-07 01:49:44,090 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-07 01:49:44,091 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-07 01:49:44,093 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-07 01:49:44,094 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-07 01:49:44,095 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-07 01:49:44,096 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-07 01:49:44,098 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-07 01:49:44,101 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-07 01:49:44,103 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-07 01:49:44,104 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-07 01:49:44,105 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-07 01:49:44,106 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-07 01:49:44,110 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-07 01:49:44,110 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-07 01:49:44,111 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-07 01:49:44,112 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-07 01:49:44,112 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-07 01:49:44,113 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-07 01:49:44,114 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-07 01:49:44,114 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-07 01:49:44,115 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-07 01:49:44,116 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-07 01:49:44,117 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-07 01:49:44,117 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-07 01:49:44,118 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-07 01:49:44,118 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-07 01:49:44,118 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-07 01:49:44,119 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-07 01:49:44,120 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-07 01:49:44,121 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-07 01:49:44,137 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-07 01:49:44,137 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-07 01:49:44,138 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-07 01:49:44,138 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-07 01:49:44,138 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-07 01:49:44,138 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-07 01:49:44,139 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-07 01:49:44,139 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-07 01:49:44,139 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-07 01:49:44,139 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-07 01:49:44,139 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-07 01:49:44,140 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-07 01:49:44,141 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-07 01:49:44,141 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-07 01:49:44,141 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-07 01:49:44,141 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-07 01:49:44,141 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 01:49:44,141 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-07 01:49:44,141 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-07 01:49:44,142 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-07 01:49:44,142 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_840cf674-f5a3-46fe-8363-b41de992600f/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_840cf674-f5a3-46fe-8363-b41de992600f/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 -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2021-12-07 01:49:44,320 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-07 01:49:44,338 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-07 01:49:44,340 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-07 01:49:44,341 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-07 01:49:44,341 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-07 01:49:44,342 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2021-12-07 01:49:44,383 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/data/270f71621/c0f658c22617432ea9f454261ea533c7/FLAG9764f028d
[2021-12-07 01:49:45,758 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-07 01:49:45,758 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2021-12-07 01:49:45,926 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/data/270f71621/c0f658c22617432ea9f454261ea533c7/FLAG9764f028d
[2021-12-07 01:49:46,374 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/data/270f71621/c0f658c22617432ea9f454261ea533c7
[2021-12-07 01:49:46,376 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-07 01:49:46,377 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-07 01:49:46,378 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-07 01:49:46,378 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-07 01:49:46,381 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-07 01:49:46,382 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:49:46" (1/1) ...
[2021-12-07 01:49:46,383 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c78936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:49:46, skipping insertion in model container
[2021-12-07 01:49:46,383 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:49:46" (1/1) ...
[2021-12-07 01:49:46,389 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-07 01:49:47,010 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-07 01:49:56,815 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_840cf674-f5a3-46fe-8363-b41de992600f/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2021-12-07 01:49:56,871 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 01:49:56,876 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-07 01:50:02,794 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_840cf674-f5a3-46fe-8363-b41de992600f/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2021-12-07 01:50:02,799 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 01:50:03,470 INFO  L208         MainTranslator]: Completed translation
[2021-12-07 01:50:03,470 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03 WrapperNode
[2021-12-07 01:50:03,470 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-07 01:50:03,471 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-07 01:50:03,471 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-07 01:50:03,471 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-07 01:50:03,476 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:03,781 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:04,855 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-07 01:50:04,856 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-07 01:50:04,856 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-07 01:50:04,857 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-07 01:50:04,857 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-07 01:50:04,864 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:04,864 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:05,092 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:05,093 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:05,626 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:05,735 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:05,989 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:06,272 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-07 01:50:06,272 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-07 01:50:06,272 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-07 01:50:06,273 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-07 01:50:06,273 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (1/1) ...
[2021-12-07 01:50:06,280 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 01:50:06,288 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 01:50:06,298 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-07 01:50:06,300 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-07 01:50:06,327 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-07 01:50:06,327 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-07 01:50:06,327 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-07 01:50:06,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-07 01:50:06,426 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-07 01:50:06,428 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-07 01:50:29,969 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-07 01:50:30,025 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-07 01:50:30,025 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-07 01:50:30,034 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:50:30 BoogieIcfgContainer
[2021-12-07 01:50:30,034 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-07 01:50:30,036 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-07 01:50:30,036 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-07 01:50:30,038 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-07 01:50:30,038 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:49:46" (1/3) ...
[2021-12-07 01:50:30,039 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e00a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:50:30, skipping insertion in model container
[2021-12-07 01:50:30,039 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:50:03" (2/3) ...
[2021-12-07 01:50:30,039 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e00a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:50:30, skipping insertion in model container
[2021-12-07 01:50:30,039 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:50:30" (3/3) ...
[2021-12-07 01:50:30,040 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2021-12-07 01:50:30,044 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-07 01:50:30,044 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-07 01:50:30,103 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-07 01:50:30,109 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 01:50:30,109 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-07 01:50:30,222 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 01:50:31,117 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10130
[2021-12-07 01:50:31,117 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:50:31,123 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 01:50:31,126 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:50:31,141 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:50:31,146 INFO  L85        PathProgramCache]: Analyzing trace with hash 1781731849, now seen corresponding path program 1 times
[2021-12-07 01:50:31,152 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:50:31,152 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684741786]
[2021-12-07 01:50:31,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:50:31,156 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:50:32,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:50:53,488 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 01:50:53,489 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:50:53,489 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684741786]
[2021-12-07 01:50:53,489 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684741786] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:50:53,489 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:50:53,491 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:50:53,492 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087986070]
[2021-12-07 01:50:53,493 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:50:53,505 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:50:53,506 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:50:53,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:50:53,526 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:50:53,550 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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 01:51:33,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:51:33,885 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2021-12-07 01:51:33,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-07 01:51:33,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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 10129
[2021-12-07 01:51:33,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:51:34,049 INFO  L225             Difference]: With dead ends: 40898
[2021-12-07 01:51:34,049 INFO  L226             Difference]: Without dead ends: 30574
[2021-12-07 01:51:34,065 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-07 01:51:34,068 INFO  L933         BasicCegarLoop]: 5139 mSDtfsCounter, 22296 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22296 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.4s IncrementalHoareTripleChecker+Time
[2021-12-07 01:51:34,069 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22296 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 39.4s Time]
[2021-12-07 01:51:34,118 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2021-12-07 01:51:34,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2021-12-07 01:51:34,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:51:34,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2021-12-07 01:51:34,618 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10129
[2021-12-07 01:51:34,645 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:51:34,645 INFO  L470      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2021-12-07 01:51:34,647 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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 01:51:34,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2021-12-07 01:51:35,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13029
[2021-12-07 01:51:35,604 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:51:35,613 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:51:35,614 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-07 01:51:35,614 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:51:35,615 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:51:35,618 INFO  L85        PathProgramCache]: Analyzing trace with hash 1703780912, now seen corresponding path program 1 times
[2021-12-07 01:51:35,619 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:51:35,619 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382228162]
[2021-12-07 01:51:35,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:51:35,620 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:51:36,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:52:05,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-12-07 01:52:05,386 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:52:05,386 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382228162]
[2021-12-07 01:52:05,387 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382228162] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:52:05,387 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:52:05,388 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 01:52:05,389 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974525024]
[2021-12-07 01:52:05,389 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:52:05,405 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:52:05,405 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:52:05,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:52:05,406 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:52:05,410 INFO  L87              Difference]: Start difference. First operand 30574 states and 45754 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 01:52:28,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:52:28,484 INFO  L93              Difference]: Finished difference Result 71336 states and 116865 transitions.
[2021-12-07 01:52:28,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:52:28,486 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 13028
[2021-12-07 01:52:28,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:52:28,540 INFO  L225             Difference]: With dead ends: 71336
[2021-12-07 01:52:28,540 INFO  L226             Difference]: Without dead ends: 50954
[2021-12-07 01:52:28,555 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 01:52:28,556 INFO  L933         BasicCegarLoop]: 4817 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time
[2021-12-07 01:52:28,557 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 4866 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time]
[2021-12-07 01:52:28,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50954 states.
[2021-12-07 01:52:29,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50954 to 50954.
[2021-12-07 01:52:29,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50954 states, 50953 states have (on average 1.4546935411065098) internal successors, (74121), 50953 states have internal predecessors, (74121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:52:29,273 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 74121 transitions.
[2021-12-07 01:52:29,273 INFO  L78                 Accepts]: Start accepts. Automaton has 50954 states and 74121 transitions. Word has length 13028
[2021-12-07 01:52:29,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:52:29,276 INFO  L470      AbstractCegarLoop]: Abstraction has 50954 states and 74121 transitions.
[2021-12-07 01:52:29,278 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 01:52:29,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 50954 states and 74121 transitions.
[2021-12-07 01:52:30,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13030
[2021-12-07 01:52:30,312 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:52:30,318 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 01:52:30,318 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-07 01:52:30,318 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:52:30,319 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:52:30,322 INFO  L85        PathProgramCache]: Analyzing trace with hash 1342842322, now seen corresponding path program 1 times
[2021-12-07 01:52:30,322 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:52:30,323 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046547195]
[2021-12-07 01:52:30,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:52:30,324 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:52:31,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:52:57,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 01:52:57,678 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:52:57,678 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046547195]
[2021-12-07 01:52:57,678 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046547195] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:52:57,678 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:52:57,680 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:52:57,680 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688693989]
[2021-12-07 01:52:57,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:52:57,689 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:52:57,689 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:52:57,689 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:52:57,689 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:52:57,692 INFO  L87              Difference]: Start difference. First operand 50954 states and 74121 transitions. Second operand  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 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 01:53:20,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:53:20,024 INFO  L93              Difference]: Finished difference Result 112096 states and 166188 transitions.
[2021-12-07 01:53:20,025 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:53:20,026 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 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 13029
[2021-12-07 01:53:20,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:53:20,196 INFO  L225             Difference]: With dead ends: 112096
[2021-12-07 01:53:20,196 INFO  L226             Difference]: Without dead ends: 71334
[2021-12-07 01:53:20,226 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:53:20,227 INFO  L933         BasicCegarLoop]: 18209 mSDtfsCounter, 10210 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33598 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 37351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:53:20,228 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10210 Valid, 18260 Invalid, 37351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33598 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time]
[2021-12-07 01:53:20,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71334 states.
[2021-12-07 01:53:20,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71334 to 71334.
[2021-12-07 01:53:20,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71334 states, 71333 states have (on average 1.4101607951439026) internal successors, (100591), 71333 states have internal predecessors, (100591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:53:20,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71334 states to 71334 states and 100591 transitions.
[2021-12-07 01:53:20,919 INFO  L78                 Accepts]: Start accepts. Automaton has 71334 states and 100591 transitions. Word has length 13029
[2021-12-07 01:53:20,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:53:20,923 INFO  L470      AbstractCegarLoop]: Abstraction has 71334 states and 100591 transitions.
[2021-12-07 01:53:20,925 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 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 01:53:20,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 71334 states and 100591 transitions.
[2021-12-07 01:53:21,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13036
[2021-12-07 01:53:21,936 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:53:21,943 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 01:53:21,943 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-07 01:53:21,943 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:53:21,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:53:21,946 INFO  L85        PathProgramCache]: Analyzing trace with hash 150604033, now seen corresponding path program 1 times
[2021-12-07 01:53:21,946 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:53:21,947 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426403628]
[2021-12-07 01:53:21,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:53:21,948 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:53:23,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:53:47,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-12-07 01:53:47,494 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:53:47,494 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426403628]
[2021-12-07 01:53:47,495 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426403628] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:53:47,495 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:53:47,496 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 01:53:47,497 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380778772]
[2021-12-07 01:53:47,497 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:53:47,506 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:53:47,506 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:53:47,506 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:53:47,506 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:53:47,509 INFO  L87              Difference]: Start difference. First operand 71334 states and 100591 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 01:54:12,985 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:54:12,985 INFO  L93              Difference]: Finished difference Result 193616 states and 281376 transitions.
[2021-12-07 01:54:12,986 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:54:12,987 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 13035
[2021-12-07 01:54:12,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:54:13,098 INFO  L225             Difference]: With dead ends: 193616
[2021-12-07 01:54:13,098 INFO  L226             Difference]: Without dead ends: 132474
[2021-12-07 01:54:13,126 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 01:54:13,127 INFO  L933         BasicCegarLoop]: 6718 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27706 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 40736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time
[2021-12-07 01:54:13,127 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10129 Valid, 6767 Invalid, 40736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27706 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time]
[2021-12-07 01:54:13,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132474 states.
[2021-12-07 01:54:14,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132474 to 132474.
[2021-12-07 01:54:14,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132474 states, 132473 states have (on average 1.319838759596295) internal successors, (174843), 132473 states have internal predecessors, (174843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:54:14,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132474 states to 132474 states and 174843 transitions.
[2021-12-07 01:54:14,385 INFO  L78                 Accepts]: Start accepts. Automaton has 132474 states and 174843 transitions. Word has length 13035
[2021-12-07 01:54:14,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:54:14,387 INFO  L470      AbstractCegarLoop]: Abstraction has 132474 states and 174843 transitions.
[2021-12-07 01:54:14,389 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 01:54:14,389 INFO  L276                IsEmpty]: Start isEmpty. Operand 132474 states and 174843 transitions.
[2021-12-07 01:54:15,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13046
[2021-12-07 01:54:15,608 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:54:15,614 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:54:15,614 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-07 01:54:15,614 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:54:15,615 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:54:15,618 INFO  L85        PathProgramCache]: Analyzing trace with hash -1979479814, now seen corresponding path program 1 times
[2021-12-07 01:54:15,618 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:54:15,618 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515758183]
[2021-12-07 01:54:15,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:54:15,619 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:54:16,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:54:41,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 01:54:41,076 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:54:41,076 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515758183]
[2021-12-07 01:54:41,077 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515758183] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:54:41,077 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:54:41,079 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:54:41,080 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325627222]
[2021-12-07 01:54:41,080 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:54:41,089 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:54:41,089 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:54:41,089 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:54:41,089 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:54:41,092 INFO  L87              Difference]: Start difference. First operand 132474 states and 174843 transitions. Second operand  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:55:18,696 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:55:18,696 INFO  L93              Difference]: Finished difference Result 458556 states and 616640 transitions.
[2021-12-07 01:55:18,696 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:55:18,698 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13045
[2021-12-07 01:55:18,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:55:19,046 INFO  L225             Difference]: With dead ends: 458556
[2021-12-07 01:55:19,046 INFO  L226             Difference]: Without dead ends: 336274
[2021-12-07 01:55:19,107 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:55:19,108 INFO  L933         BasicCegarLoop]: 5416 mSDtfsCounter, 26546 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41001 mSolverCounterSat, 28388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26546 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 69389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28388 IncrementalHoareTripleChecker+Valid, 41001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time
[2021-12-07 01:55:19,109 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [26546 Valid, 5515 Invalid, 69389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28388 Valid, 41001 Invalid, 0 Unknown, 0 Unchecked, 36.1s Time]
[2021-12-07 01:55:19,308 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336274 states.
[2021-12-07 01:55:21,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336274 to 336274.
[2021-12-07 01:55:21,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336274 states, 336273 states have (on average 1.2261257965997865) internal successors, (412313), 336273 states have internal predecessors, (412313), 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 01:55:22,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336274 states to 336274 states and 412313 transitions.
[2021-12-07 01:55:22,268 INFO  L78                 Accepts]: Start accepts. Automaton has 336274 states and 412313 transitions. Word has length 13045
[2021-12-07 01:55:22,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:55:22,270 INFO  L470      AbstractCegarLoop]: Abstraction has 336274 states and 412313 transitions.
[2021-12-07 01:55:22,271 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-07 01:55:22,271 INFO  L276                IsEmpty]: Start isEmpty. Operand 336274 states and 412313 transitions.
[2021-12-07 01:55:23,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13140
[2021-12-07 01:55:23,846 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:55:23,849 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:55:23,849 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-07 01:55:23,849 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:55:23,850 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:55:23,851 INFO  L85        PathProgramCache]: Analyzing trace with hash 87907681, now seen corresponding path program 1 times
[2021-12-07 01:55:23,851 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:55:23,851 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500655315]
[2021-12-07 01:55:23,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:55:23,852 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:55:25,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:55:49,810 INFO  L134       CoverageAnalysis]: Checked inductivity of 3127 backedges. 3108 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2021-12-07 01:55:49,810 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:55:49,810 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500655315]
[2021-12-07 01:55:49,810 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500655315] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:55:49,811 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:55:49,812 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:55:49,812 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960867999]
[2021-12-07 01:55:49,812 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:55:49,818 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:55:49,818 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:55:49,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:55:49,818 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:55:49,821 INFO  L87              Difference]: Start difference. First operand 336274 states and 412313 transitions. Second operand  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 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 01:56:29,890 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:56:29,890 INFO  L93              Difference]: Finished difference Result 1069956 states and 1329050 transitions.
[2021-12-07 01:56:29,890 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:56:29,892 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 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 13139
[2021-12-07 01:56:29,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:56:30,760 INFO  L225             Difference]: With dead ends: 1069956
[2021-12-07 01:56:30,760 INFO  L226             Difference]: Without dead ends: 743874
[2021-12-07 01:56:30,883 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:56:30,884 INFO  L933         BasicCegarLoop]: 7953 mSDtfsCounter, 17480 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 58154 mSolverCounterSat, 18126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17480 SdHoareTripleChecker+Valid, 8077 SdHoareTripleChecker+Invalid, 76280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18126 IncrementalHoareTripleChecker+Valid, 58154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2021-12-07 01:56:30,884 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [17480 Valid, 8077 Invalid, 76280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18126 Valid, 58154 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2021-12-07 01:56:31,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 743874 states.
[2021-12-07 01:56:36,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 743874 to 743874.
[2021-12-07 01:56:37,092 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 743874 states, 743873 states have (on average 1.1708571221162751) internal successors, (870969), 743873 states have internal predecessors, (870969), 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 01:56:38,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 743874 states to 743874 states and 870969 transitions.
[2021-12-07 01:56:38,236 INFO  L78                 Accepts]: Start accepts. Automaton has 743874 states and 870969 transitions. Word has length 13139
[2021-12-07 01:56:38,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:56:38,237 INFO  L470      AbstractCegarLoop]: Abstraction has 743874 states and 870969 transitions.
[2021-12-07 01:56:38,239 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 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 01:56:38,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 743874 states and 870969 transitions.
[2021-12-07 01:56:40,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13303
[2021-12-07 01:56:40,108 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:56:40,111 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:56:40,111 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-07 01:56:40,112 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:56:40,112 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:56:40,114 INFO  L85        PathProgramCache]: Analyzing trace with hash 1725594372, now seen corresponding path program 1 times
[2021-12-07 01:56:40,114 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:56:40,114 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92201378]
[2021-12-07 01:56:40,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:56:40,115 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:56:41,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:57:06,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 3566 backedges. 3247 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked.
[2021-12-07 01:57:06,593 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:57:06,593 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92201378]
[2021-12-07 01:57:06,593 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92201378] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:57:06,593 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:57:06,595 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 01:57:06,595 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017018567]
[2021-12-07 01:57:06,595 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:57:06,600 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:57:06,600 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:57:06,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:57:06,601 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:57:06,604 INFO  L87              Difference]: Start difference. First operand 743874 states and 870969 transitions. Second operand  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 2 states have internal predecessors, (13029), 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 01:57:35,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:57:35,810 INFO  L93              Difference]: Finished difference Result 2211236 states and 2592510 transitions.
[2021-12-07 01:57:35,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:57:35,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 2 states have internal predecessors, (13029), 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 13302
[2021-12-07 01:57:35,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:57:37,653 INFO  L225             Difference]: With dead ends: 2211236
[2021-12-07 01:57:37,654 INFO  L226             Difference]: Without dead ends: 1477554
[2021-12-07 01:57:37,924 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 01:57:37,925 INFO  L933         BasicCegarLoop]: 6208 mSDtfsCounter, 9694 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30541 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9694 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 41042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-07 01:57:37,925 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9694 Valid, 6257 Invalid, 41042 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10501 Valid, 30541 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-07 01:57:38,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1477554 states.
[2021-12-07 01:57:50,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477554 to 1477554.
[2021-12-07 01:57:50,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1477554 states, 1477553 states have (on average 1.1311479182134245) internal successors, (1671331), 1477553 states have internal predecessors, (1671331), 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 01:57:53,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1477554 states to 1477554 states and 1671331 transitions.
[2021-12-07 01:57:53,033 INFO  L78                 Accepts]: Start accepts. Automaton has 1477554 states and 1671331 transitions. Word has length 13302
[2021-12-07 01:57:53,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:57:53,035 INFO  L470      AbstractCegarLoop]: Abstraction has 1477554 states and 1671331 transitions.
[2021-12-07 01:57:53,036 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 2 states have internal predecessors, (13029), 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 01:57:53,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 1477554 states and 1671331 transitions.
[2021-12-07 01:57:55,580 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13445
[2021-12-07 01:57:55,580 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:57:55,583 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:57:55,583 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-07 01:57:55,583 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:57:55,583 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:57:55,585 INFO  L85        PathProgramCache]: Analyzing trace with hash 864786671, now seen corresponding path program 1 times
[2021-12-07 01:57:55,585 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:57:55,585 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510441694]
[2021-12-07 01:57:55,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:57:55,586 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:57:56,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:58:22,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 3852 backedges. 3717 proven. 1 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2021-12-07 01:58:22,815 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:58:22,815 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510441694]
[2021-12-07 01:58:22,815 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510441694] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-07 01:58:22,815 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086545206]
[2021-12-07 01:58:22,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:58:22,818 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-07 01:58:22,818 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 01:58:22,818 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-07 01:58:22,819 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840cf674-f5a3-46fe-8363-b41de992600f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-07 01:58:26,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:58:26,291 INFO  L263         TraceCheckSpWp]: Trace formula consists of 13938 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-12-07 01:58:26,453 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-12-07 01:58:35,290 INFO  L134       CoverageAnalysis]: Checked inductivity of 3852 backedges. 3434 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked.
[2021-12-07 01:58:35,290 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-07 01:58:35,291 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086545206] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:58:35,291 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-12-07 01:58:35,296 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [18] total 19
[2021-12-07 01:58:35,296 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069393043]
[2021-12-07 01:58:35,296 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:58:35,305 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:58:35,305 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:58:35,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:58:35,306 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380
[2021-12-07 01:58:35,309 INFO  L87              Difference]: Start difference. First operand 1477554 states and 1671331 transitions. Second operand  has 3 states, 3 states have (on average 4342.666666666667) internal successors, (13028), 2 states have internal predecessors, (13028), 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)