./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label04.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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/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 f13a6ce45a7c153f6afc4dd793237594f023a0bc0e58342f14c53b1c07670e16
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:54:09,018 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:54:09,083 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-29 05:54:09,088 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:54:09,088 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:54:09,113 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:54:09,113 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:54:09,114 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:54:09,115 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:54:09,115 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:54:09,116 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:54:09,116 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:54:09,117 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:54:09,118 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:54:09,118 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:54:09,119 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:54:09,119 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:54:09,120 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-29 05:54:09,120 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:54:09,120 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-29 05:54:09,121 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:54:09,122 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:54:09,122 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:54:09,122 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:54:09,123 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-29 05:54:09,123 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:54:09,124 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:54:09,124 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:54:09,125 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:54:09,125 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:54:09,125 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:54:09,126 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:54:09,126 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:54:09,127 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:54:09,127 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:54:09,127 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:54:09,127 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:54:09,128 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:54:09,128 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:54:09,128 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:54:09,128 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:54:09,129 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:54:09,129 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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/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 -> f13a6ce45a7c153f6afc4dd793237594f023a0bc0e58342f14c53b1c07670e16
[2023-11-29 05:54:09,347 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:54:09,369 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:54:09,372 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:54:09,373 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:54:09,374 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:54:09,375 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-programs/Problem101_label04.c
[2023-11-29 05:54:12,123 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:54:13,795 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:54:13,796 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/sv-benchmarks/c/eca-programs/Problem101_label04.c
[2023-11-29 05:54:13,967 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/data/ed3cc25e3/e4566a65de6b48d78f97904875c44a17/FLAG8a4511541
[2023-11-29 05:54:13,980 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/data/ed3cc25e3/e4566a65de6b48d78f97904875c44a17
[2023-11-29 05:54:13,982 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:54:13,984 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:54:13,985 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:54:13,986 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:54:13,996 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:54:13,996 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:54:13" (1/1) ...
[2023-11-29 05:54:13,997 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab5d5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:13, skipping insertion in model container
[2023-11-29 05:54:13,998 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:54:13" (1/1) ...
[2023-11-29 05:54:14,932 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:54:25,828 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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/sv-benchmarks/c/eca-programs/Problem101_label04.c[2768161,2768174]
[2023-11-29 05:54:25,892 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:54:25,901 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:54:32,492 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_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/sv-benchmarks/c/eca-programs/Problem101_label04.c[2768161,2768174]
[2023-11-29 05:54:32,505 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:54:33,329 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:54:33,329 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33 WrapperNode
[2023-11-29 05:54:33,330 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:54:33,330 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:54:33,331 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:54:33,331 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:54:33,336 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:33,901 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:35,817 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83781
[2023-11-29 05:54:35,818 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:54:35,818 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:54:35,818 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:54:35,818 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:54:35,829 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:35,829 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:36,086 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:36,525 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 05:54:36,526 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:36,526 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:37,403 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:37,557 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:37,646 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:37,764 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:38,082 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:54:38,083 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:54:38,083 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:54:38,083 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:54:38,084 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (1/1) ...
[2023-11-29 05:54:38,089 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:54:38,099 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:54:38,112 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:54:38,114 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e065fa-3a9c-41f2-b63e-e1a9dbd9fcd7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:54:38,145 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:54:38,145 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:54:38,145 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:54:38,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:54:38,273 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:54:38,275 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:55:18,609 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:55:18,792 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:55:18,792 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:55:18,797 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:55:18 BoogieIcfgContainer
[2023-11-29 05:55:18,798 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:55:18,801 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:55:18,801 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:55:18,804 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:55:18,804 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:54:13" (1/3) ...
[2023-11-29 05:55:18,805 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:55:18, skipping insertion in model container
[2023-11-29 05:55:18,805 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:33" (2/3) ...
[2023-11-29 05:55:18,805 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:55:18, skipping insertion in model container
[2023-11-29 05:55:18,805 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:55:18" (3/3) ...
[2023-11-29 05:55:18,807 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label04.c
[2023-11-29 05:55:18,826 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:55:18,826 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:55:19,199 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:55:19,207 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;@26640c3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:55:19,207 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:55:19,244 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 05:55:19,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10096
[2023-11-29 05:55:19,914 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:55:19,921 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 05:55:19,924 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:19,929 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:19,937 INFO  L85        PathProgramCache]: Analyzing trace with hash -1620266306, now seen corresponding path program 1 times
[2023-11-29 05:55:19,944 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:19,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078759675]
[2023-11-29 05:55:19,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:19,949 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:22,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:55:47,614 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 05:55:47,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:55:47,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078759675]
[2023-11-29 05:55:47,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078759675] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:55:47,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:55:47,619 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:55:47,620 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101721966]
[2023-11-29 05:55:47,621 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:55:47,638 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-29 05:55:47,638 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:55:47,680 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-29 05:55:47,680 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 05:55:47,714 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 5047.5) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:48,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:55:48,072 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-29 05:55:48,073 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-29 05:55:48,080 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5047.5) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10095
[2023-11-29 05:55:48,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:55:48,289 INFO  L225             Difference]: With dead ends: 20389
[2023-11-29 05:55:48,289 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-29 05:55:48,312 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 05:55:48,316 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 05:55:48,318 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 05:55:48,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-29 05:55:48,615 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-29 05:55:48,645 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 05:55:48,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-29 05:55:48,697 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10095
[2023-11-29 05:55:48,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:55:48,715 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-29 05:55:48,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5047.5) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:55:48,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-29 05:55:49,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10096
[2023-11-29 05:55:49,277 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:55:49,282 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]
[2023-11-29 05:55:49,283 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:55:49,283 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:55:49,284 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:55:49,289 INFO  L85        PathProgramCache]: Analyzing trace with hash -26773670, now seen corresponding path program 1 times
[2023-11-29 05:55:49,290 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:55:49,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564830353]
[2023-11-29 05:55:49,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:55:49,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:55:51,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:56:22,011 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 05:56:22,011 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:56:22,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564830353]
[2023-11-29 05:56:22,012 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564830353] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:56:22,012 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:56:22,014 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:56:22,014 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105522612]
[2023-11-29 05:56:22,014 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:56:22,022 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:56:22,023 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:56:22,030 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:56:22,030 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:56:22,034 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:00,395 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:57:00,395 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-11-29 05:57:00,396 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:57:00,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10095
[2023-11-29 05:57:00,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:57:00,500 INFO  L225             Difference]: With dead ends: 30575
[2023-11-29 05:57:00,500 INFO  L226             Difference]: Without dead ends: 20383
[2023-11-29 05:57:00,512 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 05:57:00,513 INFO  L413           NwaCegarLoop]: 722 mSDtfsCounter, 479 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33703 mSolverCounterSat, 12060 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 45763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12060 IncrementalHoareTripleChecker+Valid, 33703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time
[2023-11-29 05:57:00,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 772 Invalid, 45763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12060 Valid, 33703 Invalid, 0 Unknown, 0 Unchecked, 37.6s Time]
[2023-11-29 05:57:00,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-11-29 05:57:01,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-11-29 05:57:01,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.957069963693455) internal successors, (39889), 20382 states have internal predecessors, (39889), 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 05:57:01,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 39889 transitions.
[2023-11-29 05:57:01,120 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 39889 transitions. Word has length 10095
[2023-11-29 05:57:01,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:57:01,136 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 39889 transitions.
[2023-11-29 05:57:01,139 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 05:57:01,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 39889 transitions.
[2023-11-29 05:57:01,717 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10101
[2023-11-29 05:57:01,717 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:57:01,722 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:01,723 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:57:01,723 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:57:01,723 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:57:01,727 INFO  L85        PathProgramCache]: Analyzing trace with hash -143761166, now seen corresponding path program 1 times
[2023-11-29 05:57:01,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:57:01,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279616200]
[2023-11-29 05:57:01,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:57:01,729 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:57:03,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:57:27,152 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 05:57:27,153 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:57:27,153 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279616200]
[2023-11-29 05:57:27,153 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279616200] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:57:27,153 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:57:27,155 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:57:27,155 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193441161]
[2023-11-29 05:57:27,155 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:57:27,165 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:57:27,165 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:57:27,172 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:57:27,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:57:27,175 INFO  L87              Difference]: Start difference. First operand 20383 states and 39889 transitions. Second operand  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 05:58:04,804 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:58:04,805 INFO  L93              Difference]: Finished difference Result 61145 states and 119664 transitions.
[2023-11-29 05:58:04,805 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:58:04,807 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 10100
[2023-11-29 05:58:04,807 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:58:04,866 INFO  L225             Difference]: With dead ends: 61145
[2023-11-29 05:58:04,866 INFO  L226             Difference]: Without dead ends: 40763
[2023-11-29 05:58:04,884 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 05:58:04,885 INFO  L413           NwaCegarLoop]: 4820 mSDtfsCounter, 13686 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28826 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13686 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 40503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:58:04,886 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13686 Valid, 4869 Invalid, 40503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28826 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time]
[2023-11-29 05:58:04,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-11-29 05:58:05,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-11-29 05:58:05,520 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.7314655806878956) internal successors, (70578), 40762 states have internal predecessors, (70578), 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 05:58:05,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 70578 transitions.
[2023-11-29 05:58:05,596 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 70578 transitions. Word has length 10100
[2023-11-29 05:58:05,599 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:58:05,599 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 70578 transitions.
[2023-11-29 05:58:05,601 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 05:58:05,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 70578 transitions.
[2023-11-29 05:58:06,492 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10111
[2023-11-29 05:58:06,492 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:58:06,497 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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[2023-11-29 05:58:06,498 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:58:06,498 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:58:06,498 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:58:06,502 INFO  L85        PathProgramCache]: Analyzing trace with hash 2117472921, now seen corresponding path program 1 times
[2023-11-29 05:58:06,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:58:06,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310766666]
[2023-11-29 05:58:06,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:58:06,504 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:58:08,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:58:38,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:58:38,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:58:38,438 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310766666]
[2023-11-29 05:58:38,438 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310766666] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:58:38,438 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:58:38,439 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:58:38,440 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935731950]
[2023-11-29 05:58:38,440 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:58:38,448 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:58:38,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:58:38,458 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:58:38,458 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:58:38,461 INFO  L87              Difference]: Start difference. First operand 40763 states and 70578 transitions. Second operand  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 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 05:59:16,280 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:59:16,280 INFO  L93              Difference]: Finished difference Result 122285 states and 211731 transitions.
[2023-11-29 05:59:16,281 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 05:59:16,282 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 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 10110
[2023-11-29 05:59:16,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:59:16,385 INFO  L225             Difference]: With dead ends: 122285
[2023-11-29 05:59:16,385 INFO  L226             Difference]: Without dead ends: 81523
[2023-11-29 05:59:16,410 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 05:59:16,412 INFO  L413           NwaCegarLoop]: 7615 mSDtfsCounter, 12053 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 35106 mSolverCounterSat, 6982 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12053 SdHoareTripleChecker+Valid, 7665 SdHoareTripleChecker+Invalid, 42088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6982 IncrementalHoareTripleChecker+Valid, 35106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time
[2023-11-29 05:59:16,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12053 Valid, 7665 Invalid, 42088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6982 Valid, 35106 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time]
[2023-11-29 05:59:16,464 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-11-29 05:59:17,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-11-29 05:59:17,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.5510659699222296) internal successors, (126446), 81522 states have internal predecessors, (126446), 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 05:59:17,205 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 126446 transitions.
[2023-11-29 05:59:17,206 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 126446 transitions. Word has length 10110
[2023-11-29 05:59:17,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:59:17,207 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 126446 transitions.
[2023-11-29 05:59:17,209 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 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 05:59:17,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 126446 transitions.
[2023-11-29 05:59:18,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10112
[2023-11-29 05:59:18,015 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:59:18,021 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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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]
[2023-11-29 05:59:18,021 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:59:18,021 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:59:18,022 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:59:18,025 INFO  L85        PathProgramCache]: Analyzing trace with hash -1984240439, now seen corresponding path program 1 times
[2023-11-29 05:59:18,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:59:18,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109315629]
[2023-11-29 05:59:18,027 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:59:18,027 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:59:19,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:59:44,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-29 05:59:44,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:59:44,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109315629]
[2023-11-29 05:59:44,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109315629] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:59:44,921 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:59:44,923 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 05:59:44,923 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436753969]
[2023-11-29 05:59:44,923 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:59:44,933 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 05:59:44,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:59:44,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 05:59:44,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 05:59:44,943 INFO  L87              Difference]: Start difference. First operand 81523 states and 126446 transitions. Second operand  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:00:23,387 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:00:23,387 INFO  L93              Difference]: Finished difference Result 244565 states and 379335 transitions.
[2023-11-29 06:00:23,388 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 06:00:23,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10111
[2023-11-29 06:00:23,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:00:23,585 INFO  L225             Difference]: With dead ends: 244565
[2023-11-29 06:00:23,586 INFO  L226             Difference]: Without dead ends: 163043
[2023-11-29 06:00:23,616 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 06:00:23,617 INFO  L413           NwaCegarLoop]: 6552 mSDtfsCounter, 13060 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27578 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13060 SdHoareTripleChecker+Valid, 6601 SdHoareTripleChecker+Invalid, 40608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:00:23,617 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13060 Valid, 6601 Invalid, 40608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27578 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time]
[2023-11-29 06:00:23,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-11-29 06:00:25,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-11-29 06:00:25,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.3997129573974805) internal successors, (228212), 163042 states have internal predecessors, (228212), 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 06:00:25,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 228212 transitions.
[2023-11-29 06:00:25,635 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 228212 transitions. Word has length 10111
[2023-11-29 06:00:25,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:00:25,636 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 228212 transitions.
[2023-11-29 06:00:25,638 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-29 06:00:25,638 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 228212 transitions.
[2023-11-29 06:00:26,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10115
[2023-11-29 06:00:26,545 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:00:26,549 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 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, 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]
[2023-11-29 06:00:26,549 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 06:00:26,549 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:00:26,550 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:00:26,554 INFO  L85        PathProgramCache]: Analyzing trace with hash -118037647, now seen corresponding path program 1 times
[2023-11-29 06:00:26,554 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:00:26,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691990067]
[2023-11-29 06:00:26,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:00:26,556 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:00:27,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:00:50,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-11-29 06:00:50,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:00:50,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691990067]
[2023-11-29 06:00:50,694 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691990067] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:00:50,694 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:00:50,696 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 06:00:50,696 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280337819]
[2023-11-29 06:00:50,696 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:00:50,704 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 06:00:50,704 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:00:50,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 06:00:50,711 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 06:00:50,714 INFO  L87              Difference]: Start difference. First operand 163043 states and 228212 transitions. Second operand  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 06:01:29,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:01:29,793 INFO  L93              Difference]: Finished difference Result 489125 states and 684633 transitions.
[2023-11-29 06:01:29,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 06:01:29,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 10114
[2023-11-29 06:01:29,795 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:01:30,234 INFO  L225             Difference]: With dead ends: 489125
[2023-11-29 06:01:30,234 INFO  L226             Difference]: Without dead ends: 326083
[2023-11-29 06:01:30,468 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 06:01:30,471 INFO  L413           NwaCegarLoop]: 7228 mSDtfsCounter, 12256 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29483 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12256 SdHoareTripleChecker+Valid, 7277 SdHoareTripleChecker+Invalid, 41238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2023-11-29 06:01:30,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12256 Valid, 7277 Invalid, 41238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29483 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2023-11-29 06:01:30,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326083 states.
[2023-11-29 06:01:33,367 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326083 to 326083.
[2023-11-29 06:01:33,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326083 states, 326082 states have (on average 1.303592347937022) internal successors, (425078), 326082 states have internal predecessors, (425078), 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 06:01:33,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326083 states to 326083 states and 425078 transitions.
[2023-11-29 06:01:33,905 INFO  L78                 Accepts]: Start accepts. Automaton has 326083 states and 425078 transitions. Word has length 10114
[2023-11-29 06:01:33,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:01:33,905 INFO  L495      AbstractCegarLoop]: Abstraction has 326083 states and 425078 transitions.
[2023-11-29 06:01:33,908 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3366.6666666666665) internal successors, (10100), 2 states have internal predecessors, (10100), 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 06:01:33,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 326083 states and 425078 transitions.
[2023-11-29 06:01:35,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10117
[2023-11-29 06:01:35,219 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:01:35,220 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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[2023-11-29 06:01:35,220 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 06:01:35,221 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:01:35,221 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:01:35,222 INFO  L85        PathProgramCache]: Analyzing trace with hash -1662777654, now seen corresponding path program 1 times
[2023-11-29 06:01:35,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:01:35,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115585451]
[2023-11-29 06:01:35,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:01:35,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:01:36,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:02:12,684 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 06:02:12,685 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:02:12,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115585451]
[2023-11-29 06:02:12,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115585451] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:02:12,685 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:02:12,688 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 06:02:12,688 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269796994]
[2023-11-29 06:02:12,688 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:02:12,699 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 06:02:12,699 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:02:12,711 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 06:02:12,711 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 06:02:12,715 INFO  L87              Difference]: Start difference. First operand 326083 states and 425078 transitions. Second operand  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 06:02:48,796 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:02:48,796 INFO  L93              Difference]: Finished difference Result 815205 states and 1047339 transitions.
[2023-11-29 06:02:48,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 06:02:48,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 10116
[2023-11-29 06:02:48,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:02:49,325 INFO  L225             Difference]: With dead ends: 815205
[2023-11-29 06:02:49,325 INFO  L226             Difference]: Without dead ends: 489123
[2023-11-29 06:02:49,425 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 06:02:49,426 INFO  L413           NwaCegarLoop]: 8143 mSDtfsCounter, 11069 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28560 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11069 SdHoareTripleChecker+Valid, 8192 SdHoareTripleChecker+Invalid, 36051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time
[2023-11-29 06:02:49,427 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11069 Valid, 8192 Invalid, 36051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28560 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time]
[2023-11-29 06:02:49,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489123 states.
[2023-11-29 06:02:54,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489123 to 489123.
[2023-11-29 06:02:54,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489123 states, 489122 states have (on average 1.2361006047570953) internal successors, (604604), 489122 states have internal predecessors, (604604), 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 06:02:55,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489123 states to 489123 states and 604604 transitions.
[2023-11-29 06:02:55,121 INFO  L78                 Accepts]: Start accepts. Automaton has 489123 states and 604604 transitions. Word has length 10116
[2023-11-29 06:02:55,122 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:02:55,122 INFO  L495      AbstractCegarLoop]: Abstraction has 489123 states and 604604 transitions.
[2023-11-29 06:02:55,123 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 06:02:55,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 489123 states and 604604 transitions.
[2023-11-29 06:02:56,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10146
[2023-11-29 06:02:56,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 06:02:56,780 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 06:02:56,780 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 06:02:56,781 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 06:02:56,781 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 06:02:56,782 INFO  L85        PathProgramCache]: Analyzing trace with hash 337714863, now seen corresponding path program 1 times
[2023-11-29 06:02:56,782 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 06:02:56,782 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087823727]
[2023-11-29 06:02:56,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 06:02:56,783 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 06:02:58,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 06:03:21,063 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 06:03:21,063 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 06:03:21,064 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087823727]
[2023-11-29 06:03:21,064 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087823727] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 06:03:21,064 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 06:03:21,065 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 06:03:21,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137874943]
[2023-11-29 06:03:21,065 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 06:03:21,070 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 06:03:21,070 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 06:03:21,075 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 06:03:21,075 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 06:03:21,078 INFO  L87              Difference]: Start difference. First operand 489123 states and 604604 transitions. Second operand  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 06:04:03,795 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 06:04:03,795 INFO  L93              Difference]: Finished difference Result 1467365 states and 1813809 transitions.
[2023-11-29 06:04:03,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 06:04:03,797 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 10145
[2023-11-29 06:04:03,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 06:04:04,940 INFO  L225             Difference]: With dead ends: 1467365
[2023-11-29 06:04:04,940 INFO  L226             Difference]: Without dead ends: 978243
[2023-11-29 06:04:05,149 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 06:04:05,149 INFO  L413           NwaCegarLoop]: 8086 mSDtfsCounter, 11323 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30807 mSolverCounterSat, 11046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11323 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 41853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11046 IncrementalHoareTripleChecker+Valid, 30807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time
[2023-11-29 06:04:05,150 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11323 Valid, 8135 Invalid, 41853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11046 Valid, 30807 Invalid, 0 Unknown, 0 Unchecked, 37.8s Time]
[2023-11-29 06:04:06,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978243 states.
[2023-11-29 06:04:14,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978243 to 978243.
[2023-11-29 06:04:15,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978243 states, 978242 states have (on average 1.1810533589847911) internal successors, (1155356), 978242 states have internal predecessors, (1155356), 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 06:04:16,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978243 states to 978243 states and 1155356 transitions.
[2023-11-29 06:04:16,894 INFO  L78                 Accepts]: Start accepts. Automaton has 978243 states and 1155356 transitions. Word has length 10145
[2023-11-29 06:04:16,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 06:04:16,895 INFO  L495      AbstractCegarLoop]: Abstraction has 978243 states and 1155356 transitions.
[2023-11-29 06:04:16,896 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 06:04:16,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 978243 states and 1155356 transitions.