./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/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 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 22:26:15,240 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 22:26:15,242 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 22:26:15,271 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 22:26:15,271 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 22:26:15,273 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 22:26:15,274 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 22:26:15,277 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 22:26:15,279 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 22:26:15,280 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 22:26:15,281 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 22:26:15,282 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 22:26:15,282 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 22:26:15,284 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 22:26:15,285 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 22:26:15,286 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 22:26:15,287 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 22:26:15,288 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 22:26:15,291 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 22:26:15,293 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 22:26:15,295 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 22:26:15,296 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 22:26:15,298 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 22:26:15,298 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 22:26:15,302 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 22:26:15,302 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 22:26:15,303 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 22:26:15,304 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 22:26:15,304 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 22:26:15,305 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 22:26:15,306 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 22:26:15,306 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 22:26:15,307 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 22:26:15,308 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 22:26:15,309 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 22:26:15,309 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 22:26:15,309 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 22:26:15,310 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 22:26:15,310 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 22:26:15,310 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 22:26:15,311 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 22:26:15,311 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 22:26:15,334 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 22:26:15,335 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 22:26:15,335 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 22:26:15,335 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 22:26:15,336 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 22:26:15,336 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 22:26:15,336 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 22:26:15,336 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 22:26:15,336 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 22:26:15,337 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 22:26:15,337 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 22:26:15,337 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 22:26:15,337 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 22:26:15,337 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 22:26:15,337 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 22:26:15,338 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 22:26:15,338 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 22:26:15,339 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 22:26:15,339 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 22:26:15,340 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 22:26:15,340 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 22:26:15,340 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 22:26:15,340 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 22:26:15,340 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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/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 -> 41e23ce61c4ec5f5654fc4bd84a547bf559989a53840176f6f531be89d4f357c
[2021-12-06 22:26:15,539 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 22:26:15,555 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 22:26:15,557 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 22:26:15,558 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 22:26:15,558 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 22:26:15,559 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label51.c
[2021-12-06 22:26:15,602 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/data/f8cb7faa7/c474c1bdc4414f888241e7d79370d353/FLAG094f5b157
[2021-12-06 22:26:16,960 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 22:26:16,961 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/sv-benchmarks/c/eca-rers2012/Problem07_label51.c
[2021-12-06 22:26:17,126 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/data/f8cb7faa7/c474c1bdc4414f888241e7d79370d353/FLAG094f5b157
[2021-12-06 22:26:17,634 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/data/f8cb7faa7/c474c1bdc4414f888241e7d79370d353
[2021-12-06 22:26:17,637 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 22:26:17,638 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 22:26:17,639 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 22:26:17,639 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 22:26:17,642 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 22:26:17,642 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:17" (1/1) ...
[2021-12-06 22:26:17,643 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0222ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:17, skipping insertion in model container
[2021-12-06 22:26:17,644 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:26:17" (1/1) ...
[2021-12-06 22:26:17,651 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 22:26:18,334 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 22:26:28,080 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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283]
[2021-12-06 22:26:28,137 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 22:26:28,143 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 22:26:34,124 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_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/sv-benchmarks/c/eca-rers2012/Problem07_label51.c[2774270,2774283]
[2021-12-06 22:26:34,128 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 22:26:34,780 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 22:26:34,780 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34 WrapperNode
[2021-12-06 22:26:34,780 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 22:26:34,781 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 22:26:34,781 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 22:26:34,781 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 22:26:34,786 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:35,113 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:36,319 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 22:26:36,320 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 22:26:36,321 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 22:26:36,321 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 22:26:36,321 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 22:26:36,328 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:36,329 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:36,527 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:36,528 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:37,123 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:37,239 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:37,343 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:37,649 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 22:26:37,650 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 22:26:37,650 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 22:26:37,650 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 22:26:37,651 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (1/1) ...
[2021-12-06 22:26:37,658 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 22:26:37,669 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 22:26:37,680 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 22:26:37,682 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d11b6a5-acf5-4f19-9eae-db2dde705e9e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 22:26:37,714 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 22:26:37,714 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 22:26:37,714 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 22:26:37,714 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 22:26:37,806 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 22:26:37,807 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 22:27:01,229 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 22:27:01,272 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 22:27:01,272 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 22:27:01,280 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:27:01 BoogieIcfgContainer
[2021-12-06 22:27:01,280 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 22:27:01,282 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 22:27:01,282 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 22:27:01,284 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 22:27:01,284 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:26:17" (1/3) ...
[2021-12-06 22:27:01,285 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604283fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:27:01, skipping insertion in model container
[2021-12-06 22:27:01,285 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:26:34" (2/3) ...
[2021-12-06 22:27:01,285 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604283fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:27:01, skipping insertion in model container
[2021-12-06 22:27:01,285 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:27:01" (3/3) ...
[2021-12-06 22:27:01,286 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label51.c
[2021-12-06 22:27:01,290 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 22:27:01,290 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 22:27:01,352 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 22:27:01,357 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 22:27:01,357 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 22:27:01,491 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:27:02,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10131
[2021-12-06 22:27:02,048 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:27:02,054 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 22:27:02,057 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:27:02,061 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:27:02,066 INFO  L85        PathProgramCache]: Analyzing trace with hash -600832726, now seen corresponding path program 1 times
[2021-12-06 22:27:02,073 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:27:02,073 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452189963]
[2021-12-06 22:27:02,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:27:02,077 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:27:04,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:27:23,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:27:23,545 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:27:23,545 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452189963]
[2021-12-06 22:27:23,546 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452189963] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:27:23,546 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:27:23,547 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:27:23,549 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154890020]
[2021-12-06 22:27:23,549 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:27:23,562 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:27:23,562 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:27:23,582 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:27:23,583 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:27:23,604 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:27:47,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:27:47,434 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 22:27:47,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:27:47,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 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 10130
[2021-12-06 22:27:47,459 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:27:47,557 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 22:27:47,557 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 22:27:47,570 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:27:47,573 INFO  L933         BasicCegarLoop]: 7753 mSDtfsCounter, 378 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31165 mSolverCounterSat, 9560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 40725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9560 IncrementalHoareTripleChecker+Valid, 31165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 22:27:47,573 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 7806 Invalid, 40725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9560 Valid, 31165 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 22:27:47,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 22:27:47,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 22:27:47,937 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.6155619879311192) internal successors, (32930), 20383 states have internal predecessors, (32930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:27:48,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 32930 transitions.
[2021-12-06 22:27:48,034 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 32930 transitions. Word has length 10130
[2021-12-06 22:27:48,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:27:48,047 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 32930 transitions.
[2021-12-06 22:27:48,049 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3376.6666666666665) internal successors, (10130), 2 states have internal predecessors, (10130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:27:48,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 32930 transitions.
[2021-12-06 22:27:48,710 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10135
[2021-12-06 22:27:48,710 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:27:48,715 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 22:27:48,716 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 22:27:48,716 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:27:48,716 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:27:48,722 INFO  L85        PathProgramCache]: Analyzing trace with hash 1812832594, now seen corresponding path program 1 times
[2021-12-06 22:27:48,722 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:27:48,722 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523224625]
[2021-12-06 22:27:48,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:27:48,724 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:27:49,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:28:00,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:28:00,513 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:28:00,513 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523224625]
[2021-12-06 22:28:00,513 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523224625] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:28:00,513 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:28:00,515 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:28:00,515 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817302529]
[2021-12-06 22:28:00,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:28:00,525 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:28:00,525 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:28:00,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:28:00,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:28:00,528 INFO  L87              Difference]: Start difference. First operand 20384 states and 32930 transitions. Second operand  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:28:24,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:28:24,468 INFO  L93              Difference]: Finished difference Result 61146 states and 98785 transitions.
[2021-12-06 22:28:24,468 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:28:24,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10134
[2021-12-06 22:28:24,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:28:24,532 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 22:28:24,532 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 22:28:24,551 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:28:24,552 INFO  L933         BasicCegarLoop]: 8838 mSDtfsCounter, 11137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29966 mSolverCounterSat, 11743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11137 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 41709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11743 IncrementalHoareTripleChecker+Valid, 29966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 22:28:24,553 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11137 Valid, 8887 Invalid, 41709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11743 Valid, 29966 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 22:28:24,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 22:28:25,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 22:28:25,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.470328484164561) internal successors, (59935), 40763 states have internal predecessors, (59935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:28:25,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59935 transitions.
[2021-12-06 22:28:25,106 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59935 transitions. Word has length 10134
[2021-12-06 22:28:25,108 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:28:25,108 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59935 transitions.
[2021-12-06 22:28:25,109 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:28:25,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59935 transitions.
[2021-12-06 22:28:25,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10138
[2021-12-06 22:28:25,742 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:28:25,747 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 22:28:25,747 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 22:28:25,748 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:28:25,748 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:28:25,751 INFO  L85        PathProgramCache]: Analyzing trace with hash -1877923091, now seen corresponding path program 1 times
[2021-12-06 22:28:25,751 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:28:25,751 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070036661]
[2021-12-06 22:28:25,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:28:25,753 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:28:26,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:28:36,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:28:36,480 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:28:36,480 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070036661]
[2021-12-06 22:28:36,480 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070036661] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:28:36,480 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:28:36,482 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:28:36,482 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981892091]
[2021-12-06 22:28:36,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:28:36,488 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:28:36,488 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:28:36,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:28:36,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:28:36,491 INFO  L87              Difference]: Start difference. First operand 40764 states and 59935 transitions. Second operand  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:00,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:29:00,653 INFO  L93              Difference]: Finished difference Result 122286 states and 179800 transitions.
[2021-12-06 22:29:00,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:29:00,655 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 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 10137
[2021-12-06 22:29:00,655 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:29:00,722 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 22:29:00,722 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 22:29:00,747 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:29:00,748 INFO  L933         BasicCegarLoop]: 9447 mSDtfsCounter, 10618 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31303 mSolverCounterSat, 10928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10618 SdHoareTripleChecker+Valid, 9496 SdHoareTripleChecker+Invalid, 42231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10928 IncrementalHoareTripleChecker+Valid, 31303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 22:29:00,748 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10618 Valid, 9496 Invalid, 42231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10928 Valid, 31303 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 22:29:00,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 22:29:01,346 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 22:29:01,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.3593587085853072) internal successors, (110819), 81523 states have internal predecessors, (110819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:01,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 110819 transitions.
[2021-12-06 22:29:01,578 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 110819 transitions. Word has length 10137
[2021-12-06 22:29:01,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:29:01,580 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 110819 transitions.
[2021-12-06 22:29:01,581 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:01,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 110819 transitions.
[2021-12-06 22:29:02,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10168
[2021-12-06 22:29:02,244 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:29:02,249 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 22:29:02,249 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 22:29:02,250 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:29:02,250 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:29:02,253 INFO  L85        PathProgramCache]: Analyzing trace with hash -853331806, now seen corresponding path program 1 times
[2021-12-06 22:29:02,253 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:29:02,253 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985407139]
[2021-12-06 22:29:02,254 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:29:02,254 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:29:03,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:29:11,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:29:11,832 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:29:11,832 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985407139]
[2021-12-06 22:29:11,833 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985407139] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:29:11,833 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:29:11,834 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:29:11,834 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227411132]
[2021-12-06 22:29:11,834 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:29:11,840 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:29:11,840 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:29:11,840 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:29:11,841 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:29:11,842 INFO  L87              Difference]: Start difference. First operand 81524 states and 110819 transitions. Second operand  has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:36,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:29:36,231 INFO  L93              Difference]: Finished difference Result 244566 states and 332452 transitions.
[2021-12-06 22:29:36,231 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:29:36,232 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 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 10167
[2021-12-06 22:29:36,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:29:36,457 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 22:29:36,457 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 22:29:36,489 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:29:36,491 INFO  L933         BasicCegarLoop]: 6564 mSDtfsCounter, 13102 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27663 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13102 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 40693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 22:29:36,491 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13102 Valid, 6613 Invalid, 40693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27663 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 22:29:36,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 22:29:37,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 22:29:37,705 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.258017823518949) internal successors, (205111), 163043 states have internal predecessors, (205111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:37,893 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 205111 transitions.
[2021-12-06 22:29:37,893 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 205111 transitions. Word has length 10167
[2021-12-06 22:29:37,895 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:29:37,895 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 205111 transitions.
[2021-12-06 22:29:37,896 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3389.0) internal successors, (10167), 2 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:29:37,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 205111 transitions.
[2021-12-06 22:29:38,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10175
[2021-12-06 22:29:38,808 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:29:38,813 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 22:29:38,813 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 22:29:38,814 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:29:38,814 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:29:38,817 INFO  L85        PathProgramCache]: Analyzing trace with hash -61018770, now seen corresponding path program 1 times
[2021-12-06 22:29:38,817 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:29:38,818 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634035383]
[2021-12-06 22:29:38,819 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:29:38,819 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:29:39,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:29:48,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:29:48,238 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:29:48,238 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634035383]
[2021-12-06 22:29:48,238 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634035383] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:29:48,238 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:29:48,240 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:29:48,240 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940590260]
[2021-12-06 22:29:48,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:29:48,356 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:29:48,356 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:29:48,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:29:48,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:29:48,359 INFO  L87              Difference]: Start difference. First operand 163044 states and 205111 transitions. Second operand  has 3 states, 3 states have (on average 3391.3333333333335) internal successors, (10174), 2 states have internal predecessors, (10174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:30:12,666 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:30:12,666 INFO  L93              Difference]: Finished difference Result 489126 states and 615328 transitions.
[2021-12-06 22:30:12,667 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:30:12,668 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3391.3333333333335) internal successors, (10174), 2 states have internal predecessors, (10174), 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 10174
[2021-12-06 22:30:12,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:30:12,960 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 22:30:12,960 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 22:30:13,030 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:30:13,031 INFO  L933         BasicCegarLoop]: 6020 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29205 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 40875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 22:30:13,031 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12828 Valid, 6069 Invalid, 40875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29205 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 22:30:13,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 22:30:15,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 22:30:15,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.1961770469481696) internal successors, (390053), 326083 states have internal predecessors, (390053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:30:16,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 390053 transitions.
[2021-12-06 22:30:16,058 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 390053 transitions. Word has length 10174
[2021-12-06 22:30:16,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:30:16,060 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 390053 transitions.
[2021-12-06 22:30:16,061 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3391.3333333333335) internal successors, (10174), 2 states have internal predecessors, (10174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:30:16,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 390053 transitions.
[2021-12-06 22:30:17,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10318
[2021-12-06 22:30:17,072 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:30:17,076 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 22:30:17,076 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 22:30:17,076 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:30:17,077 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:30:17,079 INFO  L85        PathProgramCache]: Analyzing trace with hash -1694238421, now seen corresponding path program 1 times
[2021-12-06 22:30:17,079 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:30:17,080 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132334839]
[2021-12-06 22:30:17,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:30:17,080 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:30:17,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:30:26,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:30:26,914 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:30:26,915 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132334839]
[2021-12-06 22:30:26,915 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132334839] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:30:26,915 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:30:26,916 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:30:26,916 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037399281]
[2021-12-06 22:30:26,916 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:30:26,922 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:30:26,923 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:30:26,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:30:26,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:30:26,925 INFO  L87              Difference]: Start difference. First operand 326084 states and 390053 transitions. Second operand  has 3 states, 3 states have (on average 3439.0) internal successors, (10317), 2 states have internal predecessors, (10317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:30:53,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:30:53,291 INFO  L93              Difference]: Finished difference Result 978246 states and 1170154 transitions.
[2021-12-06 22:30:53,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:30:53,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3439.0) internal successors, (10317), 2 states have internal predecessors, (10317), 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 10317
[2021-12-06 22:30:53,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:30:53,976 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 22:30:53,976 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 22:30:54,108 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:30:54,109 INFO  L933         BasicCegarLoop]: 8999 mSDtfsCounter, 10750 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31677 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10750 SdHoareTripleChecker+Valid, 9048 SdHoareTripleChecker+Invalid, 42178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time
[2021-12-06 22:30:54,109 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10750 Valid, 9048 Invalid, 42178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31677 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time]
[2021-12-06 22:30:54,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 22:30:59,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 22:30:59,728 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1494227670076347) internal successors, (749611), 652163 states have internal predecessors, (749611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:31:00,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 749611 transitions.
[2021-12-06 22:31:00,672 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 749611 transitions. Word has length 10317
[2021-12-06 22:31:00,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:31:00,673 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 749611 transitions.
[2021-12-06 22:31:00,674 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3439.0) internal successors, (10317), 2 states have internal predecessors, (10317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:31:00,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 749611 transitions.
[2021-12-06 22:31:02,204 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10603
[2021-12-06 22:31:02,204 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:31:02,207 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 22:31:02,207 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 22:31:02,207 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:31:02,207 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:31:02,208 INFO  L85        PathProgramCache]: Analyzing trace with hash 374280291, now seen corresponding path program 1 times
[2021-12-06 22:31:02,209 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:31:02,209 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111839876]
[2021-12-06 22:31:02,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:31:02,210 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:31:03,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:31:12,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 469 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:31:12,562 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:31:12,562 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111839876]
[2021-12-06 22:31:12,562 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111839876] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:31:12,562 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:31:12,563 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:31:12,563 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566684676]
[2021-12-06 22:31:12,564 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:31:12,568 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:31:12,568 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:31:12,568 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:31:12,568 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:31:12,570 INFO  L87              Difference]: Start difference. First operand 652164 states and 749611 transitions. Second operand  has 3 states, 3 states have (on average 3534.0) internal successors, (10602), 2 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:31:39,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:31:39,773 INFO  L93              Difference]: Finished difference Result 1956486 states and 2248828 transitions.
[2021-12-06 22:31:39,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:31:39,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3534.0) internal successors, (10602), 2 states have internal predecessors, (10602), 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 10602
[2021-12-06 22:31:39,776 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:31:41,143 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-06 22:31:41,143 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-06 22:31:41,353 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:31:41,354 INFO  L933         BasicCegarLoop]: 6002 mSDtfsCounter, 12123 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29861 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12123 SdHoareTripleChecker+Valid, 6051 SdHoareTripleChecker+Invalid, 40895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 22:31:41,354 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12123 Valid, 6051 Invalid, 40895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29861 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 22:31:42,509 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-06 22:31:51,822 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-06 22:31:52,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.1113527860813617) internal successors, (1449563), 1304323 states have internal predecessors, (1449563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:31:54,587 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1449563 transitions.
[2021-12-06 22:31:54,587 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1449563 transitions. Word has length 10602
[2021-12-06 22:31:54,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:31:54,589 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1449563 transitions.
[2021-12-06 22:31:54,590 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3534.0) internal successors, (10602), 2 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:31:54,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1449563 transitions.
[2021-12-06 22:31:56,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10900
[2021-12-06 22:31:56,599 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:31:56,602 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 22:31:56,602 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 22:31:56,603 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:31:56,603 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:31:56,605 INFO  L85        PathProgramCache]: Analyzing trace with hash -1121770105, now seen corresponding path program 1 times
[2021-12-06 22:31:56,605 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:31:56,605 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748701769]
[2021-12-06 22:31:56,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:31:56,606 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:31:57,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:32:07,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 765 backedges. 765 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:32:07,988 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:32:07,988 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748701769]
[2021-12-06 22:32:07,988 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748701769] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:32:07,988 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:32:07,990 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:32:07,990 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584598409]
[2021-12-06 22:32:07,990 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:32:07,994 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:32:07,994 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:32:07,994 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:32:07,994 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:32:07,996 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1449563 transitions. Second operand  has 3 states, 3 states have (on average 3633.0) internal successors, (10899), 2 states have internal predecessors, (10899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 22:32:43,797 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:32:43,797 INFO  L93              Difference]: Finished difference Result 3882396 states and 4314826 transitions.
[2021-12-06 22:32:43,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:32:43,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3633.0) internal successors, (10899), 2 states have internal predecessors, (10899), 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 10899
[2021-12-06 22:32:43,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:32:47,114 INFO  L225             Difference]: With dead ends: 3882396
[2021-12-06 22:32:47,115 INFO  L226             Difference]: Without dead ends: 2578074
[2021-12-06 22:32:47,912 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:32:47,914 INFO  L933         BasicCegarLoop]: 5909 mSDtfsCounter, 9682 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31792 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 43356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time
[2021-12-06 22:32:47,915 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9682 Valid, 5959 Invalid, 43356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31792 Invalid, 0 Unknown, 0 Unchecked, 26.3s Time]
[2021-12-06 22:32:49,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2578074 states.