./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-28 20:20:59,033 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-28 20:20:59,106 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-28 20:20:59,111 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-28 20:20:59,112 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-28 20:20:59,136 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-28 20:20:59,136 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-28 20:20:59,137 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-28 20:20:59,138 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-28 20:20:59,138 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-28 20:20:59,139 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-28 20:20:59,139 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-28 20:20:59,140 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-28 20:20:59,141 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-28 20:20:59,141 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-28 20:20:59,142 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-28 20:20:59,142 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-28 20:20:59,143 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-28 20:20:59,143 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-28 20:20:59,144 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-28 20:20:59,144 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-28 20:20:59,145 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-28 20:20:59,145 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-28 20:20:59,146 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-28 20:20:59,146 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-28 20:20:59,147 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-28 20:20:59,147 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-28 20:20:59,147 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-28 20:20:59,148 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-28 20:20:59,148 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-28 20:20:59,149 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-28 20:20:59,149 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:20:59,150 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-28 20:20:59,150 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-28 20:20:59,151 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-28 20:20:59,151 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-28 20:20:59,151 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-28 20:20:59,152 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-28 20:20:59,152 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-28 20:20:59,152 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-28 20:20:59,152 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-28 20:20:59,153 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-28 20:20:59,153 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/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_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2023-11-28 20:20:59,394 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-28 20:20:59,428 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-28 20:20:59,430 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-28 20:20:59,432 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-28 20:20:59,432 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-28 20:20:59,433 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2023-11-28 20:21:02,218 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-28 20:21:03,949 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-28 20:21:03,950 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2023-11-28 20:21:04,086 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/data/d1c15956c/82a91ad1054145beae500b9e481dc4e3/FLAG69696841f
[2023-11-28 20:21:04,099 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/data/d1c15956c/82a91ad1054145beae500b9e481dc4e3
[2023-11-28 20:21:04,101 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-28 20:21:04,103 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-28 20:21:04,104 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-28 20:21:04,104 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-28 20:21:04,109 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-28 20:21:04,110 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:04" (1/1) ...
[2023-11-28 20:21:04,111 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ab1bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:04, skipping insertion in model container
[2023-11-28 20:21:04,111 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:04" (1/1) ...
[2023-11-28 20:21:04,896 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-28 20:21:16,744 WARN  L240   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_9824a0d8-cf2c-4011-95fb-79eda15af92d/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2023-11-28 20:21:16,810 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:21:16,823 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-28 20:21:23,722 WARN  L240   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_9824a0d8-cf2c-4011-95fb-79eda15af92d/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2023-11-28 20:21:23,728 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:21:24,621 INFO  L206         MainTranslator]: Completed translation
[2023-11-28 20:21:24,622 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24 WrapperNode
[2023-11-28 20:21:24,622 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-28 20:21:24,623 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-28 20:21:24,623 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-28 20:21:24,623 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-28 20:21:24,630 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:25,162 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:27,175 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774
[2023-11-28 20:21:27,175 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-28 20:21:27,176 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-28 20:21:27,176 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-28 20:21:27,176 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-28 20:21:27,187 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:27,188 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:27,639 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:28,041 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-11-28 20:21:28,041 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:28,042 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,094 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,302 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,453 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,552 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,855 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-28 20:21:29,856 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-28 20:21:29,856 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-28 20:21:29,857 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-28 20:21:29,857 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (1/1) ...
[2023-11-28 20:21:29,862 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:21:29,872 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:21:29,883 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-28 20:21:29,885 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9824a0d8-cf2c-4011-95fb-79eda15af92d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-28 20:21:29,913 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-28 20:21:29,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-28 20:21:29,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-28 20:21:29,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-28 20:21:30,034 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-28 20:21:30,036 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-28 20:22:08,773 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-28 20:22:08,944 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-28 20:22:08,945 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-28 20:22:08,950 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:08 BoogieIcfgContainer
[2023-11-28 20:22:08,951 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-28 20:22:08,953 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-28 20:22:08,954 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-28 20:22:08,957 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-28 20:22:08,957 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:21:04" (1/3) ...
[2023-11-28 20:22:08,958 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d027a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:08, skipping insertion in model container
[2023-11-28 20:22:08,958 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:24" (2/3) ...
[2023-11-28 20:22:08,958 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d027a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:08, skipping insertion in model container
[2023-11-28 20:22:08,958 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:08" (3/3) ...
[2023-11-28 20:22:08,960 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2023-11-28 20:22:08,979 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-28 20:22:08,979 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-28 20:22:09,179 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-28 20:22:09,186 INFO  L357      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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b9e75e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-28 20:22:09,186 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-28 20:22:09,224 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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)
[2023-11-28 20:22:09,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2023-11-28 20:22:09,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:22:09,924 INFO  L195           NwaCegarLoop]: 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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[2023-11-28 20:22:09,927 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:22:09,935 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:22:09,942 INFO  L85        PathProgramCache]: Analyzing trace with hash -102452339, now seen corresponding path program 1 times
[2023-11-28 20:22:09,949 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:22:09,949 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337327197]
[2023-11-28 20:22:09,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:22:09,952 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:22:12,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:22:36,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:22:36,063 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:22:36,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337327197]
[2023-11-28 20:22:36,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337327197] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:22:36,064 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:22:36,065 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:22:36,067 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455467340]
[2023-11-28 20:22:36,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:22:36,084 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-28 20:22:36,084 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:22:36,119 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-28 20:22:36,119 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-28 20:22:36,153 INFO  L87              Difference]: Start difference. First operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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 2 states, 2 states have (on average 5064.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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)
[2023-11-28 20:22:36,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:22:36,559 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-28 20:22:36,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-28 20:22:36,564 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5064.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 10128
[2023-11-28 20:22:36,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:22:36,653 INFO  L225             Difference]: With dead ends: 20389
[2023-11-28 20:22:36,653 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-28 20:22:36,673 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-28 20:22:36,677 INFO  L413           NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:22:36,678 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:22:36,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-28 20:22:36,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-28 20:22:36,931 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 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)
[2023-11-28 20:22:36,971 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-28 20:22:36,973 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10128
[2023-11-28 20:22:36,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:22:36,989 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-28 20:22:36,993 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5064.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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)
[2023-11-28 20:22:36,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-28 20:22:37,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2023-11-28 20:22:37,798 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:22:37,802 INFO  L195           NwaCegarLoop]: 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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[2023-11-28 20:22:37,803 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-28 20:22:37,803 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:22:37,804 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:22:37,809 INFO  L85        PathProgramCache]: Analyzing trace with hash 709241713, now seen corresponding path program 1 times
[2023-11-28 20:22:37,810 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:22:37,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752023919]
[2023-11-28 20:22:37,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:22:37,813 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:22:39,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:23:30,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:23:30,434 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:23:30,434 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752023919]
[2023-11-28 20:23:30,434 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752023919] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:23:30,434 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:23:30,437 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-28 20:23:30,437 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095833093]
[2023-11-28 20:23:30,437 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:23:30,453 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:23:30,453 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:23:30,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:23:30,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:23:30,467 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 4 states, 4 states have (on average 2532.0) internal successors, (10128), 3 states have internal predecessors, (10128), 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)
[2023-11-28 20:24:30,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:24:30,902 INFO  L93              Difference]: Finished difference Result 40765 states and 81087 transitions.
[2023-11-28 20:24:30,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:24:30,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2532.0) internal successors, (10128), 3 states have internal predecessors, (10128), 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 10128
[2023-11-28 20:24:30,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:24:31,034 INFO  L225             Difference]: With dead ends: 40765
[2023-11-28 20:24:31,035 INFO  L226             Difference]: Without dead ends: 30573
[2023-11-28 20:24:31,048 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-28 20:24:31,050 INFO  L413           NwaCegarLoop]: 5085 mSDtfsCounter, 22279 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 51854 mSolverCounterSat, 18956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22279 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 70810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18956 IncrementalHoareTripleChecker+Valid, 51854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time
[2023-11-28 20:24:31,050 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22279 Valid, 5196 Invalid, 70810 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18956 Valid, 51854 Invalid, 0 Unknown, 0 Unchecked, 59.4s Time]
[2023-11-28 20:24:31,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30573 states.
[2023-11-28 20:24:31,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 30573.
[2023-11-28 20:24:31,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30573 states, 30572 states have (on average 1.4965654847572942) internal successors, (45753), 30572 states have internal predecessors, (45753), 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)
[2023-11-28 20:24:31,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30573 states to 30573 states and 45753 transitions.
[2023-11-28 20:24:31,631 INFO  L78                 Accepts]: Start accepts. Automaton has 30573 states and 45753 transitions. Word has length 10128
[2023-11-28 20:24:31,637 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:24:31,637 INFO  L495      AbstractCegarLoop]: Abstraction has 30573 states and 45753 transitions.
[2023-11-28 20:24:31,639 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2532.0) internal successors, (10128), 3 states have internal predecessors, (10128), 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)
[2023-11-28 20:24:31,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 30573 states and 45753 transitions.
[2023-11-28 20:24:32,364 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13028
[2023-11-28 20:24:32,364 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:24:32,374 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-28 20:24:32,375 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-28 20:24:32,375 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:24:32,376 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:24:32,379 INFO  L85        PathProgramCache]: Analyzing trace with hash 1456422856, now seen corresponding path program 1 times
[2023-11-28 20:24:32,379 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:24:32,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229173079]
[2023-11-28 20:24:32,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:24:32,380 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:24:34,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:25:10,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-28 20:25:10,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:25:10,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229173079]
[2023-11-28 20:25:10,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229173079] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:25:10,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:25:10,682 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:25:10,682 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368255675]
[2023-11-28 20:25:10,682 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:25:10,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:25:10,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:25:10,707 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:25:10,707 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:25:10,711 INFO  L87              Difference]: Start difference. First operand 30573 states and 45753 transitions. Second operand  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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)
[2023-11-28 20:25:46,299 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:25:46,299 INFO  L93              Difference]: Finished difference Result 71335 states and 116864 transitions.
[2023-11-28 20:25:46,300 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:25:46,302 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 13027
[2023-11-28 20:25:46,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:25:46,406 INFO  L225             Difference]: With dead ends: 71335
[2023-11-28 20:25:46,406 INFO  L226             Difference]: Without dead ends: 50953
[2023-11-28 20:25:46,427 INFO  L412           NwaCegarLoop]: 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
[2023-11-28 20:25:46,428 INFO  L413           NwaCegarLoop]: 4815 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28701 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 40459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:25:46,429 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10972 Valid, 4864 Invalid, 40459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28701 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time]
[2023-11-28 20:25:46,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50953 states.
[2023-11-28 20:25:47,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50953 to 50953.
[2023-11-28 20:25:47,283 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50953 states, 50952 states have (on average 1.4547024650651594) internal successors, (74120), 50952 states have internal predecessors, (74120), 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)
[2023-11-28 20:25:47,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50953 states to 50953 states and 74120 transitions.
[2023-11-28 20:25:47,357 INFO  L78                 Accepts]: Start accepts. Automaton has 50953 states and 74120 transitions. Word has length 13027
[2023-11-28 20:25:47,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:25:47,360 INFO  L495      AbstractCegarLoop]: Abstraction has 50953 states and 74120 transitions.
[2023-11-28 20:25:47,362 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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)
[2023-11-28 20:25:47,362 INFO  L276                IsEmpty]: Start isEmpty. Operand 50953 states and 74120 transitions.
[2023-11-28 20:25:48,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13029
[2023-11-28 20:25:48,187 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:25:48,194 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-28 20:25:48,194 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-28 20:25:48,194 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:25:48,195 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:25:48,198 INFO  L85        PathProgramCache]: Analyzing trace with hash -2030290118, now seen corresponding path program 1 times
[2023-11-28 20:25:48,198 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:25:48,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819055660]
[2023-11-28 20:25:48,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:25:48,199 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:25:50,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:26:57,899 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:26:57,899 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:26:57,899 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819055660]
[2023-11-28 20:26:57,899 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819055660] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:26:57,899 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:26:57,903 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-28 20:26:57,903 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206081514]
[2023-11-28 20:26:57,903 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:26:57,915 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:26:57,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:26:57,928 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:26:57,928 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:26:57,932 INFO  L87              Difference]: Start difference. First operand 50953 states and 74120 transitions. Second operand  has 3 states, 3 states have (on average 4342.666666666667) internal successors, (13028), 3 states have internal predecessors, (13028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:27:32,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:27:32,225 INFO  L93              Difference]: Finished difference Result 112095 states and 166187 transitions.
[2023-11-28 20:27:32,225 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:27:32,228 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.666666666667) internal successors, (13028), 3 states have internal predecessors, (13028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13028
[2023-11-28 20:27:32,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:27:32,317 INFO  L225             Difference]: With dead ends: 112095
[2023-11-28 20:27:32,317 INFO  L226             Difference]: Without dead ends: 71333
[2023-11-28 20:27:32,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:27:32,345 INFO  L413           NwaCegarLoop]: 18207 mSDtfsCounter, 10210 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33599 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18257 SdHoareTripleChecker+Invalid, 37352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time
[2023-11-28 20:27:32,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10210 Valid, 18257 Invalid, 37352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33599 Invalid, 0 Unknown, 0 Unchecked, 33.6s Time]
[2023-11-28 20:27:32,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71333 states.
[2023-11-28 20:27:33,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71333 to 71333.
[2023-11-28 20:27:33,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71333 states, 71332 states have (on average 1.4101665451690686) internal successors, (100590), 71332 states have internal predecessors, (100590), 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)
[2023-11-28 20:27:33,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71333 states to 71333 states and 100590 transitions.
[2023-11-28 20:27:33,237 INFO  L78                 Accepts]: Start accepts. Automaton has 71333 states and 100590 transitions. Word has length 13028
[2023-11-28 20:27:33,239 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:27:33,239 INFO  L495      AbstractCegarLoop]: Abstraction has 71333 states and 100590 transitions.
[2023-11-28 20:27:33,241 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.666666666667) internal successors, (13028), 3 states have internal predecessors, (13028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:27:33,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 71333 states and 100590 transitions.
[2023-11-28 20:27:34,183 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13035
[2023-11-28 20:27:34,183 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:27:34,190 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-28 20:27:34,190 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-28 20:27:34,191 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:27:34,191 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:27:34,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 584085609, now seen corresponding path program 1 times
[2023-11-28 20:27:34,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:27:34,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970487626]
[2023-11-28 20:27:34,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:27:34,195 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:27:36,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:28:18,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-11-28 20:28:18,100 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:28:18,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970487626]
[2023-11-28 20:28:18,100 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970487626] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:28:18,100 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:28:18,102 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:28:18,102 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604743624]
[2023-11-28 20:28:18,102 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:28:18,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:28:18,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:28:18,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:28:18,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:28:18,124 INFO  L87              Difference]: Start difference. First operand 71333 states and 100590 transitions. Second operand  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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)
[2023-11-28 20:28:55,779 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:28:55,779 INFO  L93              Difference]: Finished difference Result 193615 states and 281375 transitions.
[2023-11-28 20:28:55,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:28:55,782 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 13034
[2023-11-28 20:28:55,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:28:55,925 INFO  L225             Difference]: With dead ends: 193615
[2023-11-28 20:28:55,925 INFO  L226             Difference]: Without dead ends: 132473
[2023-11-28 20:28:55,957 INFO  L412           NwaCegarLoop]: 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
[2023-11-28 20:28:55,958 INFO  L413           NwaCegarLoop]: 6716 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27707 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 40737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time
[2023-11-28 20:28:55,959 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10129 Valid, 6765 Invalid, 40737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27707 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time]
[2023-11-28 20:28:56,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132473 states.
[2023-11-28 20:28:56,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132473 to 132473.
[2023-11-28 20:28:57,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132473 states, 132472 states have (on average 1.3198411739839362) internal successors, (174842), 132472 states have internal predecessors, (174842), 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)
[2023-11-28 20:28:57,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132473 states to 132473 states and 174842 transitions.
[2023-11-28 20:28:57,195 INFO  L78                 Accepts]: Start accepts. Automaton has 132473 states and 174842 transitions. Word has length 13034
[2023-11-28 20:28:57,197 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:28:57,197 INFO  L495      AbstractCegarLoop]: Abstraction has 132473 states and 174842 transitions.
[2023-11-28 20:28:57,199 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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)
[2023-11-28 20:28:57,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 132473 states and 174842 transitions.
[2023-11-28 20:28:58,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13045
[2023-11-28 20:28:58,400 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:28:58,404 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-28 20:28:58,405 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-28 20:28:58,405 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:28:58,405 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:28:58,407 INFO  L85        PathProgramCache]: Analyzing trace with hash 1361956450, now seen corresponding path program 1 times
[2023-11-28 20:28:58,407 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:28:58,407 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165464758]
[2023-11-28 20:28:58,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:28:58,408 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:29:00,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:30:04,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:30:04,119 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:30:04,119 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165464758]
[2023-11-28 20:30:04,119 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165464758] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:30:04,120 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:30:04,121 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-28 20:30:04,122 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839422833]
[2023-11-28 20:30:04,122 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:30:04,129 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:30:04,129 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:30:04,137 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:30:04,137 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:30:04,140 INFO  L87              Difference]: Start difference. First operand 132473 states and 174842 transitions. Second operand  has 4 states, 4 states have (on average 3261.0) internal successors, (13044), 3 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:31:02,824 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:31:02,824 INFO  L93              Difference]: Finished difference Result 458555 states and 616639 transitions.
[2023-11-28 20:31:02,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-28 20:31:02,826 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3261.0) internal successors, (13044), 3 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13044
[2023-11-28 20:31:02,828 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:31:03,260 INFO  L225             Difference]: With dead ends: 458555
[2023-11-28 20:31:03,260 INFO  L226             Difference]: Without dead ends: 336273
[2023-11-28 20:31:03,319 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:31:03,320 INFO  L413           NwaCegarLoop]: 5414 mSDtfsCounter, 18682 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 44451 mSolverCounterSat, 20575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18682 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 65026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20575 IncrementalHoareTripleChecker+Valid, 44451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time
[2023-11-28 20:31:03,320 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18682 Valid, 5532 Invalid, 65026 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20575 Valid, 44451 Invalid, 0 Unknown, 0 Unchecked, 56.7s Time]
[2023-11-28 20:31:03,516 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336273 states.
[2023-11-28 20:31:06,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336273 to 336273.
[2023-11-28 20:31:06,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336273 states, 336272 states have (on average 1.2261264690488651) internal successors, (412312), 336272 states have internal predecessors, (412312), 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)
[2023-11-28 20:31:06,655 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336273 states to 336273 states and 412312 transitions.
[2023-11-28 20:31:06,655 INFO  L78                 Accepts]: Start accepts. Automaton has 336273 states and 412312 transitions. Word has length 13044
[2023-11-28 20:31:06,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:31:06,658 INFO  L495      AbstractCegarLoop]: Abstraction has 336273 states and 412312 transitions.
[2023-11-28 20:31:06,660 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3261.0) internal successors, (13044), 3 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-28 20:31:06,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 336273 states and 412312 transitions.
[2023-11-28 20:31:08,227 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13139
[2023-11-28 20:31:08,227 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:31:08,230 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-28 20:31:08,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-28 20:31:08,230 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:31:08,231 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:31:08,232 INFO  L85        PathProgramCache]: Analyzing trace with hash 1656945865, now seen corresponding path program 1 times
[2023-11-28 20:31:08,232 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:31:08,232 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14979289]
[2023-11-28 20:31:08,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:31:08,233 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:31:10,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:32:14,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 3127 backedges. 3108 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-11-28 20:32:14,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:32:14,548 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14979289]
[2023-11-28 20:32:14,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14979289] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:32:14,548 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:32:14,551 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-28 20:32:14,552 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909531161]
[2023-11-28 20:32:14,552 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:32:14,563 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-28 20:32:14,563 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:32:14,576 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-28 20:32:14,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-28 20:32:14,580 INFO  L87              Difference]: Start difference. First operand 336273 states and 412312 transitions. Second operand  has 4 states, 4 states have (on average 3281.25) internal successors, (13125), 3 states have internal predecessors, (13125), 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)