./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label19.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/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_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/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_61473628-aeec-4589-9335-552f796cd71e/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 77a7ff586edb1dc73dfce8aaac3ae3e421c2c81f41a0761a3675603b1c895c1c
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:49:16,054 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:49:16,117 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-29 05:49:16,122 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:49:16,122 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:49:16,147 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:49:16,148 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:49:16,148 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:49:16,149 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:49:16,150 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:49:16,150 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:49:16,151 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:49:16,151 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:49:16,152 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:49:16,152 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:49:16,153 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:49:16,153 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:49:16,154 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-29 05:49:16,154 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:49:16,155 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-29 05:49:16,155 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:49:16,156 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:49:16,157 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:49:16,157 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:49:16,157 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-29 05:49:16,158 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:49:16,158 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:49:16,159 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:49:16,159 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:49:16,160 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:49:16,160 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:49:16,160 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:49:16,161 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:49:16,161 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:49:16,161 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:49:16,162 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:49:16,162 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:49:16,162 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:49:16,162 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:49:16,162 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:49:16,163 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:49:16,163 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:49:16,163 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_61473628-aeec-4589-9335-552f796cd71e/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_61473628-aeec-4589-9335-552f796cd71e/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 -> 77a7ff586edb1dc73dfce8aaac3ae3e421c2c81f41a0761a3675603b1c895c1c
[2023-11-29 05:49:16,401 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:49:16,423 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:49:16,426 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:49:16,427 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:49:16,428 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:49:16,429 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-programs/Problem101_label19.c
[2023-11-29 05:49:19,301 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:49:20,678 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:49:20,679 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/sv-benchmarks/c/eca-programs/Problem101_label19.c
[2023-11-29 05:49:20,859 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/data/395367749/f794f7d880dc4348b454da374d4527c9/FLAGcec9659f6
[2023-11-29 05:49:20,871 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/data/395367749/f794f7d880dc4348b454da374d4527c9
[2023-11-29 05:49:20,873 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:49:20,874 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:49:20,875 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:49:20,875 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:49:20,880 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:49:20,881 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:49:20" (1/1) ...
[2023-11-29 05:49:20,889 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca9b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:20, skipping insertion in model container
[2023-11-29 05:49:20,890 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:49:20" (1/1) ...
[2023-11-29 05:49:21,784 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:49:33,036 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_61473628-aeec-4589-9335-552f796cd71e/sv-benchmarks/c/eca-programs/Problem101_label19.c[2769185,2769198]
[2023-11-29 05:49:33,112 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:49:33,124 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:49:39,338 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_61473628-aeec-4589-9335-552f796cd71e/sv-benchmarks/c/eca-programs/Problem101_label19.c[2769185,2769198]
[2023-11-29 05:49:39,349 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:49:40,117 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:49:40,117 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40 WrapperNode
[2023-11-29 05:49:40,118 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:49:40,118 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:49:40,119 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:49:40,119 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:49:40,124 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:40,558 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:42,210 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83781
[2023-11-29 05:49:42,211 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:49:42,211 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:49:42,212 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:49:42,212 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:49:42,221 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:42,221 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:42,632 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:42,932 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].
[2023-11-29 05:49:42,932 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:42,932 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:43,560 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:43,848 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:43,896 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:43,972 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:44,294 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:49:44,295 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:49:44,295 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:49:44,295 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:49:44,296 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (1/1) ...
[2023-11-29 05:49:44,300 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:49:44,310 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:49:44,323 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:49:44,324 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61473628-aeec-4589-9335-552f796cd71e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:49:44,355 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:49:44,355 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:49:44,355 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:49:44,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:49:44,495 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:49:44,498 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:50:25,629 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:50:25,774 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:50:25,774 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:50:25,779 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:50:25 BoogieIcfgContainer
[2023-11-29 05:50:25,779 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:50:25,782 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:50:25,782 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:50:25,784 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:50:25,784 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:49:20" (1/3) ...
[2023-11-29 05:50:25,785 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621f3d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:50:25, skipping insertion in model container
[2023-11-29 05:50:25,785 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:49:40" (2/3) ...
[2023-11-29 05:50:25,786 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621f3d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:50:25, skipping insertion in model container
[2023-11-29 05:50:25,786 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:50:25" (3/3) ...
[2023-11-29 05:50:25,787 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label19.c
[2023-11-29 05:50:25,801 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:50:25,801 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:50:25,958 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:50:25,964 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;@2668faaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:50:25,964 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:50:25,993 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)
[2023-11-29 05:50:26,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10102
[2023-11-29 05:50:26,597 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:26,603 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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[2023-11-29 05:50:26,606 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:26,614 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:26,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 174208314, now seen corresponding path program 1 times
[2023-11-29 05:50:26,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:26,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066415904]
[2023-11-29 05:50:26,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:26,632 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:30,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:50:53,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:50:53,282 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:50:53,282 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066415904]
[2023-11-29 05:50:53,283 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066415904] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:50:53,283 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:50:53,285 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:50:53,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948450900]
[2023-11-29 05:50:53,288 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:50:53,304 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-29 05:50:53,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:50:53,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-29 05:50:53,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 05:50:53,373 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 5050.5) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:53,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:50:53,721 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-29 05:50:53,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-29 05:50:53,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5050.5) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10101
[2023-11-29 05:50:53,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:50:53,828 INFO  L225             Difference]: With dead ends: 20389
[2023-11-29 05:50:53,829 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-29 05:50:53,854 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
[2023-11-29 05:50:53,858 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
[2023-11-29 05:50:53,859 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]
[2023-11-29 05:50:53,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-29 05:50:54,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-29 05:50:54,134 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)
[2023-11-29 05:50:54,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-29 05:50:54,177 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10101
[2023-11-29 05:50:54,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:50:54,195 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-29 05:50:54,200 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5050.5) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:50:54,200 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-29 05:50:54,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10102
[2023-11-29 05:50:54,767 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:50:54,772 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:50:54,772 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:50:54,773 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:50:54,773 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:50:54,778 INFO  L85        PathProgramCache]: Analyzing trace with hash -1655125998, now seen corresponding path program 1 times
[2023-11-29 05:50:54,779 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:50:54,779 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342114105]
[2023-11-29 05:50:54,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:50:54,782 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:50:56,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:51:28,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:51:28,695 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:51:28,695 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342114105]
[2023-11-29 05:51:28,695 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342114105] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:51:28,696 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:51:28,697 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:51:28,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944981827]
[2023-11-29 05:51:28,698 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:51:28,708 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:51:28,708 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:51:28,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:51:28,717 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:51:28,722 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:07,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:52:07,941 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-11-29 05:52:07,942 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:52:07,945 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10101
[2023-11-29 05:52:07,962 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:52:08,091 INFO  L225             Difference]: With dead ends: 30575
[2023-11-29 05:52:08,091 INFO  L226             Difference]: Without dead ends: 20383
[2023-11-29 05:52:08,107 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
[2023-11-29 05:52:08,109 INFO  L413           NwaCegarLoop]: 5063 mSDtfsCounter, 1968 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33508 mSolverCounterSat, 7005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 40513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7005 IncrementalHoareTripleChecker+Valid, 33508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time
[2023-11-29 05:52:08,110 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 5113 Invalid, 40513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7005 Valid, 33508 Invalid, 0 Unknown, 0 Unchecked, 38.5s Time]
[2023-11-29 05:52:08,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-11-29 05:52:08,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-11-29 05:52:08,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.7445294868020802) internal successors, (35557), 20382 states have internal predecessors, (35557), 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)
[2023-11-29 05:52:08,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 35557 transitions.
[2023-11-29 05:52:08,651 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 35557 transitions. Word has length 10101
[2023-11-29 05:52:08,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:52:08,666 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 35557 transitions.
[2023-11-29 05:52:08,669 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:52:08,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 35557 transitions.
[2023-11-29 05:52:09,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10106
[2023-11-29 05:52:09,345 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:52:09,350 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:52:09,350 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:52:09,351 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:52:09,351 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:52:09,356 INFO  L85        PathProgramCache]: Analyzing trace with hash 1052320826, now seen corresponding path program 1 times
[2023-11-29 05:52:09,356 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:52:09,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802044263]
[2023-11-29 05:52:09,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:52:09,359 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:52:10,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:52:29,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:52:29,352 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:52:29,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802044263]
[2023-11-29 05:52:29,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802044263] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:52:29,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:52:29,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:52:29,355 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662385583]
[2023-11-29 05:52:29,355 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:52:29,366 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:52:29,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:52:29,376 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:52:29,376 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:52:29,380 INFO  L87              Difference]: Start difference. First operand 20383 states and 35557 transitions. Second operand  has 3 states, 3 states have (on average 3368.3333333333335) internal successors, (10105), 2 states have internal predecessors, (10105), 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)
[2023-11-29 05:53:07,254 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:53:07,254 INFO  L93              Difference]: Finished difference Result 61145 states and 106668 transitions.
[2023-11-29 05:53:07,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:53:07,257 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.3333333333335) internal successors, (10105), 2 states have internal predecessors, (10105), 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 10105
[2023-11-29 05:53:07,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:53:07,307 INFO  L225             Difference]: With dead ends: 61145
[2023-11-29 05:53:07,307 INFO  L226             Difference]: Without dead ends: 40763
[2023-11-29 05:53:07,323 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
[2023-11-29 05:53:07,325 INFO  L413           NwaCegarLoop]: 4833 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28701 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4882 SdHoareTripleChecker+Invalid, 40459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:53:07,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13865 Valid, 4882 Invalid, 40459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28701 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2023-11-29 05:53:07,354 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-11-29 05:53:07,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-11-29 05:53:07,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.5682253078847948) internal successors, (63924), 40762 states have internal predecessors, (63924), 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)
[2023-11-29 05:53:07,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 63924 transitions.
[2023-11-29 05:53:07,790 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 63924 transitions. Word has length 10105
[2023-11-29 05:53:07,792 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:53:07,792 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 63924 transitions.
[2023-11-29 05:53:07,794 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.3333333333335) internal successors, (10105), 2 states have internal predecessors, (10105), 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)
[2023-11-29 05:53:07,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 63924 transitions.
[2023-11-29 05:53:08,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10107
[2023-11-29 05:53:08,435 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:53:08,440 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:53:08,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:53:08,440 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:53:08,441 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:53:08,444 INFO  L85        PathProgramCache]: Analyzing trace with hash 780148650, now seen corresponding path program 1 times
[2023-11-29 05:53:08,444 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:53:08,444 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075755051]
[2023-11-29 05:53:08,446 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:53:08,446 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:53:09,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:53:27,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:53:27,236 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:53:27,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075755051]
[2023-11-29 05:53:27,236 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075755051] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:53:27,236 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:53:27,238 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:53:27,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510926644]
[2023-11-29 05:53:27,239 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:53:27,248 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:53:27,248 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:53:27,258 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:53:27,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:53:27,261 INFO  L87              Difference]: Start difference. First operand 40763 states and 63924 transitions. Second operand  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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)
[2023-11-29 05:54:05,835 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:54:05,836 INFO  L93              Difference]: Finished difference Result 122285 states and 191769 transitions.
[2023-11-29 05:54:05,836 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:54:05,838 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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 10106
[2023-11-29 05:54:05,838 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:54:05,920 INFO  L225             Difference]: With dead ends: 122285
[2023-11-29 05:54:05,921 INFO  L226             Difference]: Without dead ends: 81523
[2023-11-29 05:54:05,943 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
[2023-11-29 05:54:05,944 INFO  L413           NwaCegarLoop]: 6212 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29361 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 41038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time
[2023-11-29 05:54:05,944 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12828 Valid, 6261 Invalid, 41038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29361 Invalid, 0 Unknown, 0 Unchecked, 37.7s Time]
[2023-11-29 05:54:06,089 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-11-29 05:54:06,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-11-29 05:54:06,884 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.4373788670542922) internal successors, (117178), 81522 states have internal predecessors, (117178), 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)
[2023-11-29 05:54:06,986 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 117178 transitions.
[2023-11-29 05:54:06,986 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 117178 transitions. Word has length 10106
[2023-11-29 05:54:06,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:54:06,989 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 117178 transitions.
[2023-11-29 05:54:06,991 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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)
[2023-11-29 05:54:06,991 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 117178 transitions.
[2023-11-29 05:54:07,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10113
[2023-11-29 05:54:07,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:54:07,787 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 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]
[2023-11-29 05:54:07,788 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:54:07,788 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:54:07,788 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:54:07,793 INFO  L85        PathProgramCache]: Analyzing trace with hash 1419558683, now seen corresponding path program 1 times
[2023-11-29 05:54:07,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:54:07,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911938005]
[2023-11-29 05:54:07,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:54:07,797 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:54:09,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:54:28,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:54:28,853 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:54:28,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911938005]
[2023-11-29 05:54:28,854 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911938005] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:54:28,854 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:54:28,855 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:54:28,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449193305]
[2023-11-29 05:54:28,855 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:54:28,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:54:28,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:54:28,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:54:28,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:54:28,872 INFO  L87              Difference]: Start difference. First operand 81523 states and 117178 transitions. Second operand  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 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)
[2023-11-29 05:55:07,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:55:07,089 INFO  L93              Difference]: Finished difference Result 244565 states and 351531 transitions.
[2023-11-29 05:55:07,089 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:55:07,091 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10112
[2023-11-29 05:55:07,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:55:07,244 INFO  L225             Difference]: With dead ends: 244565
[2023-11-29 05:55:07,244 INFO  L226             Difference]: Without dead ends: 163043
[2023-11-29 05:55:07,272 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
[2023-11-29 05:55:07,273 INFO  L413           NwaCegarLoop]: 6166 mSDtfsCounter, 13400 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27534 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13400 SdHoareTripleChecker+Valid, 6215 SdHoareTripleChecker+Invalid, 40564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:55:07,274 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13400 Valid, 6215 Invalid, 40564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27534 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2023-11-29 05:55:07,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-11-29 05:55:08,666 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-11-29 05:55:08,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.313771911531998) internal successors, (214200), 163042 states have internal predecessors, (214200), 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)
[2023-11-29 05:55:08,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 214200 transitions.
[2023-11-29 05:55:08,904 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 214200 transitions. Word has length 10112
[2023-11-29 05:55:08,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:55:08,905 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 214200 transitions.
[2023-11-29 05:55:08,907 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 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)
[2023-11-29 05:55:08,907 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 214200 transitions.
[2023-11-29 05:55:09,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2023-11-29 05:55:09,790 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:55:09,794 INFO  L195           NwaCegarLoop]: trace histogram [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, 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]
[2023-11-29 05:55:09,794 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 05:55:09,795 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:09,795 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:09,798 INFO  L85        PathProgramCache]: Analyzing trace with hash 782762882, now seen corresponding path program 1 times
[2023-11-29 05:55:09,798 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:09,798 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112888866]
[2023-11-29 05:55:09,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:09,800 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:11,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:55:34,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:55:34,905 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:55:34,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112888866]
[2023-11-29 05:55:34,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112888866] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:55:34,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:55:34,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:55:34,907 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911040197]
[2023-11-29 05:55:34,907 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:55:34,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:55:34,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:55:34,921 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:55:34,921 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:55:34,924 INFO  L87              Difference]: Start difference. First operand 163043 states and 214200 transitions. Second operand  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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)
[2023-11-29 05:56:08,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:56:08,629 INFO  L93              Difference]: Finished difference Result 407605 states and 527575 transitions.
[2023-11-29 05:56:08,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:56:08,631 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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 10122
[2023-11-29 05:56:08,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:56:08,882 INFO  L225             Difference]: With dead ends: 407605
[2023-11-29 05:56:08,882 INFO  L226             Difference]: Without dead ends: 244563
[2023-11-29 05:56:08,949 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
[2023-11-29 05:56:08,949 INFO  L413           NwaCegarLoop]: 8005 mSDtfsCounter, 11128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28481 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11128 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 35972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time
[2023-11-29 05:56:08,950 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11128 Valid, 8054 Invalid, 35972 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28481 Invalid, 0 Unknown, 0 Unchecked, 32.3s Time]
[2023-11-29 05:56:09,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 244563 states.
[2023-11-29 05:56:10,754 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 244563 to 244563.
[2023-11-29 05:56:10,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 244563 states, 244562 states have (on average 1.2438890751629443) internal successors, (304208), 244562 states have internal predecessors, (304208), 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)
[2023-11-29 05:56:11,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 244563 states to 244563 states and 304208 transitions.
[2023-11-29 05:56:11,169 INFO  L78                 Accepts]: Start accepts. Automaton has 244563 states and 304208 transitions. Word has length 10122
[2023-11-29 05:56:11,170 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:56:11,170 INFO  L495      AbstractCegarLoop]: Abstraction has 244563 states and 304208 transitions.
[2023-11-29 05:56:11,171 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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)
[2023-11-29 05:56:11,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 244563 states and 304208 transitions.
[2023-11-29 05:56:12,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10152
[2023-11-29 05:56:12,994 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:56:12,996 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-29 05:56:12,996 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 05:56:12,996 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:56:12,996 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:56:12,998 INFO  L85        PathProgramCache]: Analyzing trace with hash -2056594521, now seen corresponding path program 1 times
[2023-11-29 05:56:12,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:56:12,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710441881]
[2023-11-29 05:56:12,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:56:12,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:56:14,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:31,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:56:31,341 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:31,341 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710441881]
[2023-11-29 05:56:31,342 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710441881] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:31,342 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:31,343 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:56:31,343 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552355682]
[2023-11-29 05:56:31,343 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:31,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:56:31,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:31,353 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:56:31,353 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:56:31,355 INFO  L87              Difference]: Start difference. First operand 244563 states and 304208 transitions. Second operand  has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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)
[2023-11-29 05:57:10,706 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:10,706 INFO  L93              Difference]: Finished difference Result 733685 states and 912621 transitions.
[2023-11-29 05:57:10,706 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:57:10,708 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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 10151
[2023-11-29 05:57:10,708 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:11,224 INFO  L225             Difference]: With dead ends: 733685
[2023-11-29 05:57:11,224 INFO  L226             Difference]: Without dead ends: 489123
[2023-11-29 05:57:11,313 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
[2023-11-29 05:57:11,314 INFO  L413           NwaCegarLoop]: 7236 mSDtfsCounter, 11829 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30503 mSolverCounterSat, 11086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11829 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 41589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11086 IncrementalHoareTripleChecker+Valid, 30503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:11,314 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11829 Valid, 7286 Invalid, 41589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11086 Valid, 30503 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2023-11-29 05:57:11,596 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489123 states.
[2023-11-29 05:57:15,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489123 to 489123.
[2023-11-29 05:57:15,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489123 states, 489122 states have (on average 1.1869226900446106) internal successors, (580550), 489122 states have internal predecessors, (580550), 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)
[2023-11-29 05:57:16,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489123 states to 489123 states and 580550 transitions.
[2023-11-29 05:57:16,329 INFO  L78                 Accepts]: Start accepts. Automaton has 489123 states and 580550 transitions. Word has length 10151
[2023-11-29 05:57:16,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:16,330 INFO  L495      AbstractCegarLoop]: Abstraction has 489123 states and 580550 transitions.
[2023-11-29 05:57:16,331 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3383.6666666666665) internal successors, (10151), 2 states have internal predecessors, (10151), 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)
[2023-11-29 05:57:16,332 INFO  L276                IsEmpty]: Start isEmpty. Operand 489123 states and 580550 transitions.
[2023-11-29 05:57:17,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10289
[2023-11-29 05:57:17,870 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:17,872 INFO  L195           NwaCegarLoop]: 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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[2023-11-29 05:57:17,872 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 05:57:17,873 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:17,873 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:17,874 INFO  L85        PathProgramCache]: Analyzing trace with hash 1389046115, now seen corresponding path program 1 times
[2023-11-29 05:57:17,874 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:17,874 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017807528]
[2023-11-29 05:57:17,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:17,875 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:19,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat