./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC --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 64bit --witnessprinter.graph.data.programhash ed419cfde3f00c4e881dce3bd1ed7d811204a89d89673a381df3dbc162643a28
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 18:40:25,542 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-23 18:40:25,630 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-23 18:40:25,638 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 18:40:25,638 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 18:40:25,671 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 18:40:25,672 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 18:40:25,672 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 18:40:25,673 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 18:40:25,673 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-23 18:40:25,674 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 18:40:25,674 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 18:40:25,674 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 18:40:25,674 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-23 18:40:25,675 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-23 18:40:25,676 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 18:40:25,676 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-23 18:40:25,677 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 18:40:25,677 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 18:40:25,677 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 18:40:25,677 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 18:40:25,677 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:40:25,677 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 18:40:25,677 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:40:25,678 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 18:40:25,678 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 18:40:25,679 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 18:40:25,679 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 18:40:25,679 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed419cfde3f00c4e881dce3bd1ed7d811204a89d89673a381df3dbc162643a28
[2024-11-23 18:40:25,982 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 18:40:25,991 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 18:40:25,993 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 18:40:25,994 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-23 18:40:25,995 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-23 18:40:25,996 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c
[2024-11-23 18:40:28,866 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/data/1c2b60a26/670e258372b64e15bb3b75ca068a6937/FLAG631bcda4c
[2024-11-23 18:40:29,504 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-23 18:40:29,505 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c
[2024-11-23 18:40:29,554 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/data/1c2b60a26/670e258372b64e15bb3b75ca068a6937/FLAG631bcda4c
[2024-11-23 18:40:29,577 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/data/1c2b60a26/670e258372b64e15bb3b75ca068a6937
[2024-11-23 18:40:29,580 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 18:40:29,582 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 18:40:29,585 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 18:40:29,585 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 18:40:29,590 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 18:40:29,591 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:29" (1/1) ...
[2024-11-23 18:40:29,592 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d04b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:29, skipping insertion in model container
[2024-11-23 18:40:29,592 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:29" (1/1) ...
[2024-11-23 18:40:29,732 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-23 18:40:30,016 WARN  L250   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_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c[1175,1188]
[2024-11-23 18:40:30,910 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 18:40:30,920 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-23 18:40:30,931 WARN  L250   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_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop3-back-serstep.c[1175,1188]
[2024-11-23 18:40:31,520 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 18:40:31,537 INFO  L204         MainTranslator]: Completed translation
[2024-11-23 18:40:31,538 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31 WrapperNode
[2024-11-23 18:40:31,539 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 18:40:31,540 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 18:40:31,540 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 18:40:31,540 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 18:40:31,546 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:31,735 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:33,498 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21657
[2024-11-23 18:40:33,499 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 18:40:33,499 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 18:40:33,500 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 18:40:33,500 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 18:40:33,509 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:33,509 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:33,951 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:34,395 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].
[2024-11-23 18:40:34,395 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:34,395 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:34,943 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,003 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,102 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,185 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,438 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,670 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 18:40:35,671 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 18:40:35,671 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 18:40:35,671 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-23 18:40:35,672 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (1/1) ...
[2024-11-23 18:40:35,678 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:40:35,691 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:40:35,706 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 18:40:35,714 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5e1cb61-3df2-4f3f-a03a-fd7c641b4059/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 18:40:35,737 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 18:40:35,737 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 18:40:35,737 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 18:40:35,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 18:40:36,916 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-23 18:40:36,918 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 18:41:43,773 INFO  L?                        ?]: Removed 11503 outVars from TransFormulas that were not future-live.
[2024-11-23 18:41:43,773 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-23 18:41:43,930 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 18:41:43,931 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-23 18:41:43,932 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:41:43 BoogieIcfgContainer
[2024-11-23 18:41:43,932 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 18:41:43,935 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 18:41:43,935 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 18:41:43,940 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-23 18:41:43,940 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:40:29" (1/3) ...
[2024-11-23 18:41:43,941 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9a89ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:41:43, skipping insertion in model container
[2024-11-23 18:41:43,943 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:31" (2/3) ...
[2024-11-23 18:41:43,943 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9a89ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:41:43, skipping insertion in model container
[2024-11-23 18:41:43,943 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:41:43" (3/3) ...
[2024-11-23 18:41:43,945 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.3.prop3-back-serstep.c
[2024-11-23 18:41:43,961 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 18:41:43,963 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.needham.3.prop3-back-serstep.c that has 1 procedures, 7773 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 18:41:44,172 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 18:41:44,186 INFO  L333      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, 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;@268795a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 18:41:44,187 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 18:41:44,213 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7773 states, 7771 states have (on average 1.5037961652297003) internal successors, (11686), 7772 states have internal predecessors, (11686), 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)
[2024-11-23 18:41:44,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 612
[2024-11-23 18:41:44,269 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:41:44,270 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:41:44,271 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:41:44,276 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:41:44,277 INFO  L85        PathProgramCache]: Analyzing trace with hash 417474391, now seen corresponding path program 1 times
[2024-11-23 18:41:44,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:41:44,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101187374]
[2024-11-23 18:41:44,286 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:41:44,287 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:41:45,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:41:47,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:41:47,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:41:47,903 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101187374]
[2024-11-23 18:41:47,906 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101187374] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:41:47,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:41:47,907 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 18:41:47,908 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508450611]
[2024-11-23 18:41:47,910 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:41:47,917 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 18:41:47,917 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:41:47,942 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 18:41:47,942 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:41:47,961 INFO  L87              Difference]: Start difference. First operand  has 7773 states, 7771 states have (on average 1.5037961652297003) internal successors, (11686), 7772 states have internal predecessors, (11686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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)
[2024-11-23 18:41:48,502 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:41:48,503 INFO  L93              Difference]: Finished difference Result 15303 states and 23011 transitions.
[2024-11-23 18:41:48,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:41:48,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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 611
[2024-11-23 18:41:48,511 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:41:48,570 INFO  L225             Difference]: With dead ends: 15303
[2024-11-23 18:41:48,573 INFO  L226             Difference]: Without dead ends: 7772
[2024-11-23 18:41:48,590 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:41:48,595 INFO  L435           NwaCegarLoop]: 11680 mSDtfsCounter, 0 mSDsluCounter, 23354 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35034 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 18:41:48,597 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35034 Invalid, 11 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 18:41:48,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7772 states.
[2024-11-23 18:41:48,859 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7772.
[2024-11-23 18:41:48,877 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7772 states, 7771 states have (on average 1.5035387980954833) internal successors, (11684), 7771 states have internal predecessors, (11684), 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)
[2024-11-23 18:41:48,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 11684 transitions.
[2024-11-23 18:41:48,920 INFO  L78                 Accepts]: Start accepts. Automaton has 7772 states and 11684 transitions. Word has length 611
[2024-11-23 18:41:48,922 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:41:48,922 INFO  L471      AbstractCegarLoop]: Abstraction has 7772 states and 11684 transitions.
[2024-11-23 18:41:48,924 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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)
[2024-11-23 18:41:48,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 7772 states and 11684 transitions.
[2024-11-23 18:41:48,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 613
[2024-11-23 18:41:48,941 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:41:48,942 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:41:48,942 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 18:41:48,942 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:41:48,944 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:41:48,944 INFO  L85        PathProgramCache]: Analyzing trace with hash 58503325, now seen corresponding path program 1 times
[2024-11-23 18:41:48,944 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:41:48,944 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026199444]
[2024-11-23 18:41:48,944 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:41:48,945 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:41:49,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:41:50,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:41:50,806 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:41:50,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026199444]
[2024-11-23 18:41:50,807 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026199444] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:41:50,807 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:41:50,807 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 18:41:50,807 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308413276]
[2024-11-23 18:41:50,807 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:41:50,813 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 18:41:50,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:41:50,814 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 18:41:50,815 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:41:50,815 INFO  L87              Difference]: Start difference. First operand 7772 states and 11684 transitions. Second operand  has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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)
[2024-11-23 18:41:51,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:41:51,267 INFO  L93              Difference]: Finished difference Result 15304 states and 23009 transitions.
[2024-11-23 18:41:51,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:41:51,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 612
[2024-11-23 18:41:51,270 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:41:51,295 INFO  L225             Difference]: With dead ends: 15304
[2024-11-23 18:41:51,296 INFO  L226             Difference]: Without dead ends: 7774
[2024-11-23 18:41:51,303 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:41:51,304 INFO  L435           NwaCegarLoop]: 11680 mSDtfsCounter, 0 mSDsluCounter, 23350 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35030 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 18:41:51,304 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35030 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 18:41:51,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7774 states.
[2024-11-23 18:41:51,453 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 7774.
[2024-11-23 18:41:51,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7774 states, 7773 states have (on average 1.5034092371027916) internal successors, (11686), 7773 states have internal predecessors, (11686), 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)
[2024-11-23 18:41:51,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7774 states to 7774 states and 11686 transitions.
[2024-11-23 18:41:51,512 INFO  L78                 Accepts]: Start accepts. Automaton has 7774 states and 11686 transitions. Word has length 612
[2024-11-23 18:41:51,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:41:51,515 INFO  L471      AbstractCegarLoop]: Abstraction has 7774 states and 11686 transitions.
[2024-11-23 18:41:51,515 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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)
[2024-11-23 18:41:51,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 7774 states and 11686 transitions.
[2024-11-23 18:41:51,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 614
[2024-11-23 18:41:51,533 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:41:51,533 INFO  L218           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:41:51,533 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-23 18:41:51,534 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:41:51,534 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:41:51,535 INFO  L85        PathProgramCache]: Analyzing trace with hash 715641072, now seen corresponding path program 1 times
[2024-11-23 18:41:51,538 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:41:51,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967651821]
[2024-11-23 18:41:51,539 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:41:51,539 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:41:51,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:41:53,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:41:53,565 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:41:53,566 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967651821]
[2024-11-23 18:41:53,566 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967651821] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:41:53,566 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:41:53,566 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 18:41:53,566 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550012060]
[2024-11-23 18:41:53,566 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:41:53,568 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 18:41:53,569 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:41:53,570 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 18:41:53,570 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-23 18:41:53,571 INFO  L87              Difference]: Start difference. First operand 7774 states and 11686 transitions. Second operand  has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 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)
[2024-11-23 18:41:54,149 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:41:54,150 INFO  L93              Difference]: Finished difference Result 22824 states and 34315 transitions.
[2024-11-23 18:41:54,150 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-23 18:41:54,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 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 613
[2024-11-23 18:41:54,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:41:54,219 INFO  L225             Difference]: With dead ends: 22824
[2024-11-23 18:41:54,219 INFO  L226             Difference]: Without dead ends: 15292
[2024-11-23 18:41:54,230 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-23 18:41:54,235 INFO  L435           NwaCegarLoop]: 11678 mSDtfsCounter, 11061 mSDsluCounter, 34667 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11061 SdHoareTripleChecker+Valid, 46345 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 18:41:54,236 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11061 Valid, 46345 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 18:41:54,261 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15292 states.
[2024-11-23 18:41:54,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15292 to 8740.
[2024-11-23 18:41:54,484 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8740 states, 8739 states have (on average 1.5029179539993134) internal successors, (13134), 8739 states have internal predecessors, (13134), 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)
[2024-11-23 18:41:54,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8740 states to 8740 states and 13134 transitions.
[2024-11-23 18:41:54,520 INFO  L78                 Accepts]: Start accepts. Automaton has 8740 states and 13134 transitions. Word has length 613
[2024-11-23 18:41:54,522 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:41:54,522 INFO  L471      AbstractCegarLoop]: Abstraction has 8740 states and 13134 transitions.
[2024-11-23 18:41:54,522 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 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)
[2024-11-23 18:41:54,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 8740 states and 13134 transitions.
[2024-11-23 18:41:54,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4261
[2024-11-23 18:41:54,802 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:41:54,804 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:41:54,805 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-23 18:41:54,805 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:41:54,808 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:41:54,810 INFO  L85        PathProgramCache]: Analyzing trace with hash 842107037, now seen corresponding path program 1 times
[2024-11-23 18:41:54,810 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:41:54,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041759849]
[2024-11-23 18:41:54,811 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:41:54,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:42:04,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:42:19,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:42:19,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:42:19,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041759849]
[2024-11-23 18:42:19,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041759849] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:42:19,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:42:19,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 18:42:19,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867270889]
[2024-11-23 18:42:19,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:42:19,637 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 18:42:19,640 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:42:19,653 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 18:42:19,653 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 18:42:19,655 INFO  L87              Difference]: Start difference. First operand 8740 states and 13134 transitions. Second operand  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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)
[2024-11-23 18:42:19,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:42:19,991 INFO  L93              Difference]: Finished difference Result 16273 states and 24460 transitions.
[2024-11-23 18:42:19,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-23 18:42:19,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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 4260
[2024-11-23 18:42:20,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:42:20,040 INFO  L225             Difference]: With dead ends: 16273
[2024-11-23 18:42:20,040 INFO  L226             Difference]: Without dead ends: 8741
[2024-11-23 18:42:20,057 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 18:42:20,058 INFO  L435           NwaCegarLoop]: 11681 mSDtfsCounter, 0 mSDsluCounter, 11675 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 18:42:20,060 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23356 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 18:42:20,078 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8741 states.
[2024-11-23 18:42:20,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8741.
[2024-11-23 18:42:20,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8741 states, 8740 states have (on average 1.5028604118993134) internal successors, (13135), 8740 states have internal predecessors, (13135), 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)
[2024-11-23 18:42:20,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 13135 transitions.
[2024-11-23 18:42:20,463 INFO  L78                 Accepts]: Start accepts. Automaton has 8741 states and 13135 transitions. Word has length 4260
[2024-11-23 18:42:20,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:42:20,466 INFO  L471      AbstractCegarLoop]: Abstraction has 8741 states and 13135 transitions.
[2024-11-23 18:42:20,467 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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)
[2024-11-23 18:42:20,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 8741 states and 13135 transitions.
[2024-11-23 18:42:20,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4261
[2024-11-23 18:42:20,948 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:42:20,954 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-23 18:42:20,955 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-23 18:42:20,955 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:42:20,957 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:42:20,963 INFO  L85        PathProgramCache]: Analyzing trace with hash 1497773518, now seen corresponding path program 1 times
[2024-11-23 18:42:20,963 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:42:20,963 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869680614]
[2024-11-23 18:42:20,968 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:42:20,968 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:42:29,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:42:39,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:42:39,230 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:42:39,230 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869680614]
[2024-11-23 18:42:39,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869680614] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:42:39,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:42:39,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-23 18:42:39,231 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103034495]
[2024-11-23 18:42:39,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:42:39,235 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-23 18:42:39,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:42:39,238 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-23 18:42:39,238 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 18:42:39,240 INFO  L87              Difference]: Start difference. First operand 8741 states and 13135 transitions. Second operand  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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)
[2024-11-23 18:42:39,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:42:39,410 INFO  L93              Difference]: Finished difference Result 16275 states and 24462 transitions.
[2024-11-23 18:42:39,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-23 18:42:39,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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 4260
[2024-11-23 18:42:39,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:42:39,430 INFO  L225             Difference]: With dead ends: 16275
[2024-11-23 18:42:39,430 INFO  L226             Difference]: Without dead ends: 8742
[2024-11-23 18:42:39,439 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-23 18:42:39,440 INFO  L435           NwaCegarLoop]: 11681 mSDtfsCounter, 0 mSDsluCounter, 11675 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 18:42:39,440 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 18:42:39,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8742 states.
[2024-11-23 18:42:39,911 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 8742.
[2024-11-23 18:42:39,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8742 states, 8741 states have (on average 1.5028028829653357) internal successors, (13136), 8741 states have internal predecessors, (13136), 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)
[2024-11-23 18:42:39,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 13136 transitions.
[2024-11-23 18:42:39,941 INFO  L78                 Accepts]: Start accepts. Automaton has 8742 states and 13136 transitions. Word has length 4260
[2024-11-23 18:42:39,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:42:39,944 INFO  L471      AbstractCegarLoop]: Abstraction has 8742 states and 13136 transitions.
[2024-11-23 18:42:39,945 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1420.0) internal successors, (4260), 3 states have internal predecessors, (4260), 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)
[2024-11-23 18:42:39,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 8742 states and 13136 transitions.
[2024-11-23 18:42:40,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4261
[2024-11-23 18:42:40,071 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:42:40,073 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:42:40,073 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-23 18:42:40,073 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:42:40,075 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:42:40,077 INFO  L85        PathProgramCache]: Analyzing trace with hash -1653280321, now seen corresponding path program 1 times
[2024-11-23 18:42:40,077 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:42:40,077 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466166062]
[2024-11-23 18:42:40,078 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:42:40,079 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:42:45,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:42:57,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2024-11-23 18:42:57,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:42:57,910 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466166062]
[2024-11-23 18:42:57,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466166062] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:42:57,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:42:57,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-23 18:42:57,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387053851]
[2024-11-23 18:42:57,911 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:42:57,914 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 18:42:57,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:42:57,918 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 18:42:57,919 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 18:42:57,921 INFO  L87              Difference]: Start difference. First operand 8742 states and 13136 transitions. Second operand  has 5 states, 5 states have (on average 755.8) internal successors, (3779), 5 states have internal predecessors, (3779), 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)
[2024-11-23 18:42:58,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:42:58,337 INFO  L93              Difference]: Finished difference Result 16280 states and 24467 transitions.
[2024-11-23 18:42:58,341 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:42:58,342 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.8) internal successors, (3779), 5 states have internal predecessors, (3779), 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 4260
[2024-11-23 18:42:58,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:42:58,389 INFO  L225             Difference]: With dead ends: 16280
[2024-11-23 18:42:58,393 INFO  L226             Difference]: Without dead ends: 8746
[2024-11-23 18:42:58,403 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-23 18:42:58,408 INFO  L435           NwaCegarLoop]: 11680 mSDtfsCounter, 0 mSDsluCounter, 23350 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35030 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-23 18:42:58,409 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35030 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-23 18:42:58,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8746 states.
[2024-11-23 18:42:58,624 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 8742.
[2024-11-23 18:42:58,647 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8742 states, 8741 states have (on average 1.5028028829653357) internal successors, (13136), 8741 states have internal predecessors, (13136), 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)
[2024-11-23 18:42:58,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 13136 transitions.
[2024-11-23 18:42:58,684 INFO  L78                 Accepts]: Start accepts. Automaton has 8742 states and 13136 transitions. Word has length 4260
[2024-11-23 18:42:58,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:42:58,695 INFO  L471      AbstractCegarLoop]: Abstraction has 8742 states and 13136 transitions.
[2024-11-23 18:42:58,696 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.8) internal successors, (3779), 5 states have internal predecessors, (3779), 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)
[2024-11-23 18:42:58,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 8742 states and 13136 transitions.
[2024-11-23 18:42:58,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4262
[2024-11-23 18:42:58,879 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:42:58,889 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:42:58,889 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-23 18:42:58,889 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:42:58,891 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:42:58,893 INFO  L85        PathProgramCache]: Analyzing trace with hash 1196808341, now seen corresponding path program 1 times
[2024-11-23 18:42:58,895 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:42:58,896 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791969241]
[2024-11-23 18:42:58,897 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:42:58,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:43:06,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:43:20,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:43:20,577 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:43:20,577 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791969241]
[2024-11-23 18:43:20,577 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791969241] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:43:20,577 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:43:20,578 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 18:43:20,578 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512361301]
[2024-11-23 18:43:20,578 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:43:20,581 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 18:43:20,581 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:43:20,589 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 18:43:20,590 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:43:20,591 INFO  L87              Difference]: Start difference. First operand 8742 states and 13136 transitions. Second operand  has 4 states, 4 states have (on average 1065.25) internal successors, (4261), 4 states have internal predecessors, (4261), 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)
[2024-11-23 18:43:23,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:43:23,392 INFO  L93              Difference]: Finished difference Result 16217 states and 24403 transitions.
[2024-11-23 18:43:23,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:43:23,394 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1065.25) internal successors, (4261), 4 states have internal predecessors, (4261), 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 4261
[2024-11-23 18:43:23,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:43:23,477 INFO  L225             Difference]: With dead ends: 16217
[2024-11-23 18:43:23,478 INFO  L226             Difference]: Without dead ends: 8681
[2024-11-23 18:43:23,482 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 18:43:23,483 INFO  L435           NwaCegarLoop]: 10940 mSDtfsCounter, 8011 mSDsluCounter, 10937 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8011 SdHoareTripleChecker+Valid, 21877 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2024-11-23 18:43:23,483 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8011 Valid, 21877 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2024-11-23 18:43:23,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8681 states.
[2024-11-23 18:43:23,592 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8681.
[2024-11-23 18:43:23,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8681 states, 8680 states have (on average 1.4990783410138249) internal successors, (13012), 8680 states have internal predecessors, (13012), 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)
[2024-11-23 18:43:23,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13012 transitions.
[2024-11-23 18:43:23,613 INFO  L78                 Accepts]: Start accepts. Automaton has 8681 states and 13012 transitions. Word has length 4261
[2024-11-23 18:43:23,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:43:23,616 INFO  L471      AbstractCegarLoop]: Abstraction has 8681 states and 13012 transitions.
[2024-11-23 18:43:23,617 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1065.25) internal successors, (4261), 4 states have internal predecessors, (4261), 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)
[2024-11-23 18:43:23,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 8681 states and 13012 transitions.
[2024-11-23 18:43:23,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4263
[2024-11-23 18:43:23,743 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:43:23,745 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-23 18:43:23,746 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-23 18:43:23,746 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:43:23,748 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:43:23,750 INFO  L85        PathProgramCache]: Analyzing trace with hash 133618382, now seen corresponding path program 1 times
[2024-11-23 18:43:23,750 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:43:23,750 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922413239]
[2024-11-23 18:43:23,752 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:43:23,752 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:43:28,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:43:39,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:43:39,576 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:43:39,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922413239]
[2024-11-23 18:43:39,576 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922413239] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:43:39,576 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:43:39,577 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 18:43:39,577 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301068500]
[2024-11-23 18:43:39,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:43:39,580 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 18:43:39,580 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:43:39,583 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 18:43:39,584 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:43:39,585 INFO  L87              Difference]: Start difference. First operand 8681 states and 13012 transitions. Second operand  has 4 states, 4 states have (on average 1065.5) internal successors, (4262), 4 states have internal predecessors, (4262), 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)
[2024-11-23 18:43:40,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:43:40,451 INFO  L93              Difference]: Finished difference Result 16159 states and 24220 transitions.
[2024-11-23 18:43:40,452 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:43:40,453 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1065.5) internal successors, (4262), 4 states have internal predecessors, (4262), 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 4262
[2024-11-23 18:43:40,457 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:43:40,473 INFO  L225             Difference]: With dead ends: 16159
[2024-11-23 18:43:40,474 INFO  L226             Difference]: Without dead ends: 8681
[2024-11-23 18:43:40,480 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-23 18:43:40,481 INFO  L435           NwaCegarLoop]: 11188 mSDtfsCounter, 8005 mSDsluCounter, 11180 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8005 SdHoareTripleChecker+Valid, 22368 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-23 18:43:40,481 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8005 Valid, 22368 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-23 18:43:40,491 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8681 states.
[2024-11-23 18:43:40,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8681.
[2024-11-23 18:43:40,592 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8681 states, 8680 states have (on average 1.498963133640553) internal successors, (13011), 8680 states have internal predecessors, (13011), 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)
[2024-11-23 18:43:40,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13011 transitions.
[2024-11-23 18:43:40,604 INFO  L78                 Accepts]: Start accepts. Automaton has 8681 states and 13011 transitions. Word has length 4262
[2024-11-23 18:43:40,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:43:40,606 INFO  L471      AbstractCegarLoop]: Abstraction has 8681 states and 13011 transitions.
[2024-11-23 18:43:40,607 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1065.5) internal successors, (4262), 4 states have internal predecessors, (4262), 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)
[2024-11-23 18:43:40,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 8681 states and 13011 transitions.
[2024-11-23 18:43:40,731 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4264
[2024-11-23 18:43:40,731 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:43:40,733 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:43:40,734 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-23 18:43:40,734 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:43:40,736 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:43:40,738 INFO  L85        PathProgramCache]: Analyzing trace with hash -1930200787, now seen corresponding path program 1 times
[2024-11-23 18:43:40,738 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:43:40,738 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075671013]
[2024-11-23 18:43:40,739 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:43:40,739 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:43:46,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:43:54,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:43:54,952 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:43:54,952 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075671013]
[2024-11-23 18:43:54,952 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075671013] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:43:54,952 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:43:54,952 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 18:43:54,953 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700795930]
[2024-11-23 18:43:54,953 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:43:54,955 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 18:43:54,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:43:54,958 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 18:43:54,958 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-23 18:43:54,959 INFO  L87              Difference]: Start difference. First operand 8681 states and 13011 transitions. Second operand  has 6 states, 6 states have (on average 710.5) internal successors, (4263), 6 states have internal predecessors, (4263), 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)
[2024-11-23 18:43:56,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:43:56,426 INFO  L93              Difference]: Finished difference Result 22024 states and 33014 transitions.
[2024-11-23 18:43:56,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-23 18:43:56,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 710.5) internal successors, (4263), 6 states have internal predecessors, (4263), 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 4263
[2024-11-23 18:43:56,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:43:56,451 INFO  L225             Difference]: With dead ends: 22024
[2024-11-23 18:43:56,451 INFO  L226             Difference]: Without dead ends: 8681
[2024-11-23 18:43:56,463 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2024-11-23 18:43:56,464 INFO  L435           NwaCegarLoop]: 11475 mSDtfsCounter, 25510 mSDsluCounter, 31305 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25510 SdHoareTripleChecker+Valid, 42780 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-23 18:43:56,465 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [25510 Valid, 42780 Invalid, 674 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-23 18:43:56,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8681 states.
[2024-11-23 18:43:56,685 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8681.
[2024-11-23 18:43:56,694 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8681 states, 8680 states have (on average 1.4988479262672811) internal successors, (13010), 8680 states have internal predecessors, (13010), 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)
[2024-11-23 18:43:56,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13010 transitions.
[2024-11-23 18:43:56,729 INFO  L78                 Accepts]: Start accepts. Automaton has 8681 states and 13010 transitions. Word has length 4263
[2024-11-23 18:43:56,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:43:56,730 INFO  L471      AbstractCegarLoop]: Abstraction has 8681 states and 13010 transitions.
[2024-11-23 18:43:56,734 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 710.5) internal successors, (4263), 6 states have internal predecessors, (4263), 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)
[2024-11-23 18:43:56,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 8681 states and 13010 transitions.
[2024-11-23 18:43:57,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4265
[2024-11-23 18:43:57,096 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:43:57,099 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-23 18:43:57,099 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-23 18:43:57,099 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:43:57,101 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:43:57,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -1919779184, now seen corresponding path program 1 times
[2024-11-23 18:43:57,113 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:43:57,113 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435316690]
[2024-11-23 18:43:57,115 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:43:57,115 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:43:59,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:44:05,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:44:05,854 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:44:05,854 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435316690]
[2024-11-23 18:44:05,854 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435316690] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:44:05,855 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:44:05,855 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-23 18:44:05,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259215243]
[2024-11-23 18:44:05,855 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:44:05,858 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-23 18:44:05,858 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:44:05,862 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-23 18:44:05,862 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:44:05,863 INFO  L87              Difference]: Start difference. First operand 8681 states and 13010 transitions. Second operand  has 4 states, 4 states have (on average 1066.0) internal successors, (4264), 4 states have internal predecessors, (4264), 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)
[2024-11-23 18:44:07,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:44:07,175 INFO  L93              Difference]: Finished difference Result 22010 states and 32994 transitions.
[2024-11-23 18:44:07,175 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-23 18:44:07,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1066.0) internal successors, (4264), 4 states have internal predecessors, (4264), 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 4264
[2024-11-23 18:44:07,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:44:07,193 INFO  L225             Difference]: With dead ends: 22010
[2024-11-23 18:44:07,193 INFO  L226             Difference]: Without dead ends: 8681
[2024-11-23 18:44:07,202 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-23 18:44:07,203 INFO  L435           NwaCegarLoop]: 11373 mSDtfsCounter, 5740 mSDsluCounter, 22320 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 33693 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-23 18:44:07,205 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 33693 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-23 18:44:07,215 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8681 states.
[2024-11-23 18:44:07,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8681.
[2024-11-23 18:44:07,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8681 states, 8680 states have (on average 1.4987327188940092) internal successors, (13009), 8680 states have internal predecessors, (13009), 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)
[2024-11-23 18:44:07,320 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13009 transitions.
[2024-11-23 18:44:07,320 INFO  L78                 Accepts]: Start accepts. Automaton has 8681 states and 13009 transitions. Word has length 4264
[2024-11-23 18:44:07,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:44:07,321 INFO  L471      AbstractCegarLoop]: Abstraction has 8681 states and 13009 transitions.
[2024-11-23 18:44:07,322 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1066.0) internal successors, (4264), 4 states have internal predecessors, (4264), 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)
[2024-11-23 18:44:07,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 8681 states and 13009 transitions.
[2024-11-23 18:44:07,551 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4265
[2024-11-23 18:44:07,551 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:44:07,553 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:44:07,554 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-23 18:44:07,554 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:44:07,555 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:44:07,557 INFO  L85        PathProgramCache]: Analyzing trace with hash -931921761, now seen corresponding path program 1 times
[2024-11-23 18:44:07,557 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:44:07,557 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35208533]
[2024-11-23 18:44:07,558 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:44:07,558 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:44:12,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:44:24,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 488 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-23 18:44:24,759 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:44:24,759 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35208533]
[2024-11-23 18:44:24,760 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35208533] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:44:24,760 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:44:24,760 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-23 18:44:24,760 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196054449]
[2024-11-23 18:44:24,760 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:44:24,763 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 18:44:24,764 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:44:24,767 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 18:44:24,767 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2024-11-23 18:44:24,768 INFO  L87              Difference]: Start difference. First operand 8681 states and 13009 transitions. Second operand  has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 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)
[2024-11-23 18:44:27,187 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:44:27,187 INFO  L93              Difference]: Finished difference Result 16162 states and 24219 transitions.
[2024-11-23 18:44:27,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-23 18:44:27,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 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 4264
[2024-11-23 18:44:27,189 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:44:27,203 INFO  L225             Difference]: With dead ends: 16162
[2024-11-23 18:44:27,203 INFO  L226             Difference]: Without dead ends: 8687
[2024-11-23 18:44:27,209 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42
[2024-11-23 18:44:27,209 INFO  L435           NwaCegarLoop]: 10589 mSDtfsCounter, 10962 mSDsluCounter, 10588 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10962 SdHoareTripleChecker+Valid, 21177 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2024-11-23 18:44:27,210 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10962 Valid, 21177 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2024-11-23 18:44:27,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8687 states.
[2024-11-23 18:44:27,502 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 8681.
[2024-11-23 18:44:27,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8681 states, 8680 states have (on average 1.4986175115207374) internal successors, (13008), 8680 states have internal predecessors, (13008), 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)
[2024-11-23 18:44:27,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 13008 transitions.
[2024-11-23 18:44:27,528 INFO  L78                 Accepts]: Start accepts. Automaton has 8681 states and 13008 transitions. Word has length 4264
[2024-11-23 18:44:27,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:44:27,529 INFO  L471      AbstractCegarLoop]: Abstraction has 8681 states and 13008 transitions.
[2024-11-23 18:44:27,530 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 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)
[2024-11-23 18:44:27,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 8681 states and 13008 transitions.
[2024-11-23 18:44:27,791 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4266
[2024-11-23 18:44:27,792 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:44:27,795 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-23 18:44:27,796 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-23 18:44:27,796 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:44:27,797 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:44:27,799 INFO  L85        PathProgramCache]: Analyzing trace with hash -39469051, now seen corresponding path program 1 times
[2024-11-23 18:44:27,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:44:27,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449621359]
[2024-11-23 18:44:27,800 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:44:27,800 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:44:32,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat