./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1 --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 6cb166f1b415bd7cb288dfabe219040840e1e43eda487d6e6e2cc1713aaa79ed
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 13:48:45,055 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-12-02 13:48:45,113 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-12-02 13:48:45,118 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 13:48:45,118 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 13:48:45,141 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 13:48:45,142 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 13:48:45,142 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 13:48:45,142 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 13:48:45,142 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-12-02 13:48:45,143 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 13:48:45,143 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 13:48:45,143 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 13:48:45,143 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-12-02 13:48:45,143 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-12-02 13:48:45,143 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 13:48:45,143 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-12-02 13:48:45,144 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:48:45,144 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:48:45,145 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:48:45,145 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 13:48:45,145 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-12-02 13:48:45,146 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 13:48:45,146 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 13:48:45,146 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 13:48:45,146 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 13:48:45,146 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 13:48:45,146 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_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1
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 -> 6cb166f1b415bd7cb288dfabe219040840e1e43eda487d6e6e2cc1713aaa79ed
[2024-12-02 13:48:45,365 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 13:48:45,373 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 13:48:45,376 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 13:48:45,377 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-12-02 13:48:45,377 INFO  L274        PluginConnector]: CDTParser initialized
[2024-12-02 13:48:45,378 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c
[2024-12-02 13:48:47,988 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/data/ac06218de/6dd36ae007cf453fb03bbf88754bab14/FLAGc30b9403e
[2024-12-02 13:48:48,405 INFO  L384              CDTParser]: Found 1 translation units.
[2024-12-02 13:48:48,406 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c
[2024-12-02 13:48:48,431 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/data/ac06218de/6dd36ae007cf453fb03bbf88754bab14/FLAGc30b9403e
[2024-12-02 13:48:48,559 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/data/ac06218de/6dd36ae007cf453fb03bbf88754bab14
[2024-12-02 13:48:48,562 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 13:48:48,563 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 13:48:48,564 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 13:48:48,564 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 13:48:48,569 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 13:48:48,569 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:48:48" (1/1) ...
[2024-12-02 13:48:48,570 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322f021c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:48, skipping insertion in model container
[2024-12-02 13:48:48,570 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:48:48" (1/1) ...
[2024-12-02 13:48:48,652 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-12-02 13:48:48,847 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_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c[1174,1187]
[2024-12-02 13:48:49,422 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:48:49,432 INFO  L200         MainTranslator]: Completed pre-run
[2024-12-02 13:48:49,442 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_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bridge.3.prop1-back-serstep.c[1174,1187]
[2024-12-02 13:48:49,876 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-12-02 13:48:49,890 INFO  L204         MainTranslator]: Completed translation
[2024-12-02 13:48:49,891 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49 WrapperNode
[2024-12-02 13:48:49,891 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 13:48:49,892 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 13:48:49,892 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 13:48:49,892 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 13:48:49,899 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:50,018 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:51,159 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20176
[2024-12-02 13:48:51,159 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 13:48:51,160 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 13:48:51,160 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 13:48:51,160 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 13:48:51,168 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:51,168 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:51,508 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:51,777 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].
[2024-12-02 13:48:51,777 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:51,777 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,101 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,128 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,219 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,298 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,356 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,598 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 13:48:52,598 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 13:48:52,599 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 13:48:52,599 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-12-02 13:48:52,599 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (1/1) ...
[2024-12-02 13:48:52,604 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 13:48:52,613 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:48:52,623 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 13:48:52,625 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 13:48:52,643 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 13:48:52,643 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 13:48:52,644 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 13:48:52,644 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 13:48:53,551 INFO  L234             CfgBuilder]: Building ICFG
[2024-12-02 13:48:53,553 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 13:49:26,298 INFO  L?                        ?]: Removed 11219 outVars from TransFormulas that were not future-live.
[2024-12-02 13:49:26,298 INFO  L283             CfgBuilder]: Performing block encoding
[2024-12-02 13:49:26,366 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 13:49:26,366 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 13:49:26,366 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:26 BoogieIcfgContainer
[2024-12-02 13:49:26,367 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 13:49:26,368 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 13:49:26,368 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 13:49:26,371 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-12-02 13:49:26,371 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:48:48" (1/3) ...
[2024-12-02 13:49:26,372 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acf6d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:26, skipping insertion in model container
[2024-12-02 13:49:26,372 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:48:49" (2/3) ...
[2024-12-02 13:49:26,372 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acf6d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:26, skipping insertion in model container
[2024-12-02 13:49:26,373 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:26" (3/3) ...
[2024-12-02 13:49:26,374 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bridge.3.prop1-back-serstep.c
[2024-12-02 13:49:26,384 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 13:49:26,385 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.bridge.3.prop1-back-serstep.c that has 1 procedures, 7102 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-12-02 13:49:26,506 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 13:49:26,517 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;@6f425a66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 13:49:26,517 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 13:49:26,532 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7102 states, 7100 states have (on average 1.4998591549295774) internal successors, (10649), 7101 states have internal predecessors, (10649), 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)
[2024-12-02 13:49:26,555 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 456
[2024-12-02 13:49:26,555 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:26,556 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]
[2024-12-02 13:49:26,556 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:26,560 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:26,561 INFO  L85        PathProgramCache]: Analyzing trace with hash -1943431134, now seen corresponding path program 1 times
[2024-12-02 13:49:26,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:26,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176355711]
[2024-12-02 13:49:26,566 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:26,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:49:27,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:49:28,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:49:28,410 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:49:28,410 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176355711]
[2024-12-02 13:49:28,411 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176355711] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:49:28,411 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:49:28,411 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:49:28,413 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393145895]
[2024-12-02 13:49:28,414 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:49:28,418 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:49:28,418 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:49:28,435 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:49:28,436 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:49:28,446 INFO  L87              Difference]: Start difference. First operand  has 7102 states, 7100 states have (on average 1.4998591549295774) internal successors, (10649), 7101 states have internal predecessors, (10649), 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 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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)
[2024-12-02 13:49:35,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:49:35,635 INFO  L93              Difference]: Finished difference Result 20808 states and 31207 transitions.
[2024-12-02 13:49:35,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-12-02 13:49:35,637 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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 455
[2024-12-02 13:49:35,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:49:35,682 INFO  L225             Difference]: With dead ends: 20808
[2024-12-02 13:49:35,682 INFO  L226             Difference]: Without dead ends: 13880
[2024-12-02 13:49:35,695 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-12-02 13:49:35,698 INFO  L435           NwaCegarLoop]: 8214 mSDtfsCounter, 10114 mSDsluCounter, 24558 mSDsCounter, 0 mSdLazyCounter, 9549 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10114 SdHoareTripleChecker+Valid, 32772 SdHoareTripleChecker+Invalid, 9550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2024-12-02 13:49:35,699 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10114 Valid, 32772 Invalid, 9550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9549 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2024-12-02 13:49:35,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13880 states.
[2024-12-02 13:49:35,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13880 to 7554.
[2024-12-02 13:49:35,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7554 states, 7553 states have (on average 1.499536607970343) internal successors, (11326), 7553 states have internal predecessors, (11326), 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)
[2024-12-02 13:49:35,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7554 states to 7554 states and 11326 transitions.
[2024-12-02 13:49:35,926 INFO  L78                 Accepts]: Start accepts. Automaton has 7554 states and 11326 transitions. Word has length 455
[2024-12-02 13:49:35,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:49:35,928 INFO  L471      AbstractCegarLoop]: Abstraction has 7554 states and 11326 transitions.
[2024-12-02 13:49:35,928 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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)
[2024-12-02 13:49:35,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 7554 states and 11326 transitions.
[2024-12-02 13:49:35,935 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 458
[2024-12-02 13:49:35,935 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:35,935 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]
[2024-12-02 13:49:35,935 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 13:49:35,935 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:35,936 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:35,937 INFO  L85        PathProgramCache]: Analyzing trace with hash 1900168959, now seen corresponding path program 1 times
[2024-12-02 13:49:35,937 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:35,937 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284915577]
[2024-12-02 13:49:35,937 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:35,937 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:49:36,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:49:36,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:49:36,800 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:49:36,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284915577]
[2024-12-02 13:49:36,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284915577] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:49:36,800 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:49:36,800 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:49:36,800 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696729528]
[2024-12-02 13:49:36,800 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:49:36,802 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:49:36,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:49:36,802 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:49:36,803 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:49:36,803 INFO  L87              Difference]: Start difference. First operand 7554 states and 11326 transitions. Second operand  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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)
[2024-12-02 13:49:36,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:49:36,888 INFO  L93              Difference]: Finished difference Result 7558 states and 11330 transitions.
[2024-12-02 13:49:36,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:49:36,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 457
[2024-12-02 13:49:36,890 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:49:36,904 INFO  L225             Difference]: With dead ends: 7558
[2024-12-02 13:49:36,904 INFO  L226             Difference]: Without dead ends: 7556
[2024-12-02 13:49:36,906 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
[2024-12-02 13:49:36,906 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 21280 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31923 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:49:36,907 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31923 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:49:36,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7556 states.
[2024-12-02 13:49:36,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7556 to 7556.
[2024-12-02 13:49:36,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7556 states, 7555 states have (on average 1.499404367968233) internal successors, (11328), 7555 states have internal predecessors, (11328), 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)
[2024-12-02 13:49:37,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7556 states to 7556 states and 11328 transitions.
[2024-12-02 13:49:37,005 INFO  L78                 Accepts]: Start accepts. Automaton has 7556 states and 11328 transitions. Word has length 457
[2024-12-02 13:49:37,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:49:37,006 INFO  L471      AbstractCegarLoop]: Abstraction has 7556 states and 11328 transitions.
[2024-12-02 13:49:37,007 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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)
[2024-12-02 13:49:37,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 7556 states and 11328 transitions.
[2024-12-02 13:49:37,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 459
[2024-12-02 13:49:37,013 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:37,014 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]
[2024-12-02 13:49:37,014 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-12-02 13:49:37,014 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:37,014 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:37,015 INFO  L85        PathProgramCache]: Analyzing trace with hash -1222606337, now seen corresponding path program 1 times
[2024-12-02 13:49:37,015 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:37,015 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414847515]
[2024-12-02 13:49:37,015 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:37,015 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:49:37,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:49:37,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:49:37,496 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:49:37,496 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414847515]
[2024-12-02 13:49:37,496 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414847515] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:49:37,496 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:49:37,496 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:49:37,496 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418634574]
[2024-12-02 13:49:37,496 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:49:37,497 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:49:37,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:49:37,498 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:49:37,498 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:49:37,498 INFO  L87              Difference]: Start difference. First operand 7556 states and 11328 transitions. Second operand  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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)
[2024-12-02 13:49:37,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:49:37,603 INFO  L93              Difference]: Finished difference Result 14485 states and 21718 transitions.
[2024-12-02 13:49:37,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:49:37,603 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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 458
[2024-12-02 13:49:37,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:49:37,623 INFO  L225             Difference]: With dead ends: 14485
[2024-12-02 13:49:37,623 INFO  L226             Difference]: Without dead ends: 7558
[2024-12-02 13:49:37,628 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
[2024-12-02 13:49:37,629 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 21276 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31919 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:49:37,629 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31919 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:49:37,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7558 states.
[2024-12-02 13:49:37,828 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 7558.
[2024-12-02 13:49:37,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7558 states, 7557 states have (on average 1.4992721979621544) internal successors, (11330), 7557 states have internal predecessors, (11330), 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)
[2024-12-02 13:49:37,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7558 states to 7558 states and 11330 transitions.
[2024-12-02 13:49:37,863 INFO  L78                 Accepts]: Start accepts. Automaton has 7558 states and 11330 transitions. Word has length 458
[2024-12-02 13:49:37,864 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:49:37,864 INFO  L471      AbstractCegarLoop]: Abstraction has 7558 states and 11330 transitions.
[2024-12-02 13:49:37,865 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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)
[2024-12-02 13:49:37,865 INFO  L276                IsEmpty]: Start isEmpty. Operand 7558 states and 11330 transitions.
[2024-12-02 13:49:37,873 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 460
[2024-12-02 13:49:37,874 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:37,874 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]
[2024-12-02 13:49:37,874 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-12-02 13:49:37,874 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:37,875 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:37,875 INFO  L85        PathProgramCache]: Analyzing trace with hash -344053800, now seen corresponding path program 1 times
[2024-12-02 13:49:37,875 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:37,875 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202885384]
[2024-12-02 13:49:37,876 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:37,876 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:49:38,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:49:39,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:49:39,081 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:49:39,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202885384]
[2024-12-02 13:49:39,082 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202885384] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:49:39,082 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:49:39,082 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:49:39,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245041782]
[2024-12-02 13:49:39,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:49:39,083 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:49:39,083 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:49:39,084 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:49:39,084 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:49:39,085 INFO  L87              Difference]: Start difference. First operand 7558 states and 11330 transitions. Second operand  has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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)
[2024-12-02 13:49:39,369 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:49:39,369 INFO  L93              Difference]: Finished difference Result 20947 states and 31406 transitions.
[2024-12-02 13:49:39,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-12-02 13:49:39,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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 459
[2024-12-02 13:49:39,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:49:39,398 INFO  L225             Difference]: With dead ends: 20947
[2024-12-02 13:49:39,399 INFO  L226             Difference]: Without dead ends: 14018
[2024-12-02 13:49:39,408 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
[2024-12-02 13:49:39,410 INFO  L435           NwaCegarLoop]: 10641 mSDtfsCounter, 10176 mSDsluCounter, 31658 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10176 SdHoareTripleChecker+Valid, 42299 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:49:39,411 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10176 Valid, 42299 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:49:39,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14018 states.
[2024-12-02 13:49:39,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 7825.
[2024-12-02 13:49:39,585 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7825 states, 7824 states have (on average 1.4991053169734152) internal successors, (11729), 7824 states have internal predecessors, (11729), 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)
[2024-12-02 13:49:39,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 11729 transitions.
[2024-12-02 13:49:39,599 INFO  L78                 Accepts]: Start accepts. Automaton has 7825 states and 11729 transitions. Word has length 459
[2024-12-02 13:49:39,600 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:49:39,600 INFO  L471      AbstractCegarLoop]: Abstraction has 7825 states and 11729 transitions.
[2024-12-02 13:49:39,600 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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)
[2024-12-02 13:49:39,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 7825 states and 11729 transitions.
[2024-12-02 13:49:39,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3923
[2024-12-02 13:49:39,893 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:39,896 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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[2024-12-02 13:49:39,896 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-12-02 13:49:39,896 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:39,898 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:39,900 INFO  L85        PathProgramCache]: Analyzing trace with hash -1445046891, now seen corresponding path program 1 times
[2024-12-02 13:49:39,900 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:39,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224102782]
[2024-12-02 13:49:39,902 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:39,903 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:49:46,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:49:53,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked.
[2024-12-02 13:49:53,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:49:53,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224102782]
[2024-12-02 13:49:53,769 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224102782] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:49:53,769 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:49:53,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:49:53,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474691403]
[2024-12-02 13:49:53,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:49:53,773 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:49:53,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:49:53,775 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:49:53,775 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:49:53,777 INFO  L87              Difference]: Start difference. First operand 7825 states and 11729 transitions. Second operand  has 5 states, 5 states have (on average 712.8) internal successors, (3564), 5 states have internal predecessors, (3564), 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)
[2024-12-02 13:49:53,981 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:49:53,981 INFO  L93              Difference]: Finished difference Result 14758 states and 22123 transitions.
[2024-12-02 13:49:53,982 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:49:53,982 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 712.8) internal successors, (3564), 5 states have internal predecessors, (3564), 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 3922
[2024-12-02 13:49:53,988 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:49:53,999 INFO  L225             Difference]: With dead ends: 14758
[2024-12-02 13:49:53,999 INFO  L226             Difference]: Without dead ends: 7829
[2024-12-02 13:49:54,005 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
[2024-12-02 13:49:54,006 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 31913 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42556 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:49:54,006 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42556 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:49:54,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7829 states.
[2024-12-02 13:49:54,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 7825.
[2024-12-02 13:49:54,131 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7825 states, 7824 states have (on average 1.4991053169734152) internal successors, (11729), 7824 states have internal predecessors, (11729), 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)
[2024-12-02 13:49:54,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 11729 transitions.
[2024-12-02 13:49:54,142 INFO  L78                 Accepts]: Start accepts. Automaton has 7825 states and 11729 transitions. Word has length 3922
[2024-12-02 13:49:54,147 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:49:54,148 INFO  L471      AbstractCegarLoop]: Abstraction has 7825 states and 11729 transitions.
[2024-12-02 13:49:54,149 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 712.8) internal successors, (3564), 5 states have internal predecessors, (3564), 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)
[2024-12-02 13:49:54,149 INFO  L276                IsEmpty]: Start isEmpty. Operand 7825 states and 11729 transitions.
[2024-12-02 13:49:54,312 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3924
[2024-12-02 13:49:54,312 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:49:54,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:49:54,314 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-12-02 13:49:54,314 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:49:54,315 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:49:54,317 INFO  L85        PathProgramCache]: Analyzing trace with hash -937890935, now seen corresponding path program 1 times
[2024-12-02 13:49:54,317 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:49:54,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428221399]
[2024-12-02 13:49:54,318 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:49:54,318 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:50:01,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:50:08,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2024-12-02 13:50:08,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:50:08,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428221399]
[2024-12-02 13:50:08,438 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428221399] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:50:08,438 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:50:08,438 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:50:08,438 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378190619]
[2024-12-02 13:50:08,438 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:50:08,441 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:50:08,441 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:50:08,444 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:50:08,444 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:50:08,445 INFO  L87              Difference]: Start difference. First operand 7825 states and 11729 transitions. Second operand  has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 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)
[2024-12-02 13:50:08,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:50:08,593 INFO  L93              Difference]: Finished difference Result 14762 states and 22129 transitions.
[2024-12-02 13:50:08,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:50:08,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 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 3923
[2024-12-02 13:50:08,600 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:50:08,614 INFO  L225             Difference]: With dead ends: 14762
[2024-12-02 13:50:08,614 INFO  L226             Difference]: Without dead ends: 7829
[2024-12-02 13:50:08,620 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
[2024-12-02 13:50:08,621 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 31913 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42556 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:50:08,621 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42556 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:50:08,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7829 states.
[2024-12-02 13:50:08,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 7827.
[2024-12-02 13:50:08,721 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7827 states, 7826 states have (on average 1.4989777664196269) internal successors, (11731), 7826 states have internal predecessors, (11731), 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)
[2024-12-02 13:50:08,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 11731 transitions.
[2024-12-02 13:50:08,731 INFO  L78                 Accepts]: Start accepts. Automaton has 7827 states and 11731 transitions. Word has length 3923
[2024-12-02 13:50:08,736 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:50:08,736 INFO  L471      AbstractCegarLoop]: Abstraction has 7827 states and 11731 transitions.
[2024-12-02 13:50:08,738 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 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)
[2024-12-02 13:50:08,738 INFO  L276                IsEmpty]: Start isEmpty. Operand 7827 states and 11731 transitions.
[2024-12-02 13:50:08,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3925
[2024-12-02 13:50:08,842 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:50:08,844 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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[2024-12-02 13:50:08,844 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-12-02 13:50:08,845 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:50:08,846 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:50:08,848 INFO  L85        PathProgramCache]: Analyzing trace with hash 2104348206, now seen corresponding path program 1 times
[2024-12-02 13:50:08,848 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:50:08,848 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569084632]
[2024-12-02 13:50:08,849 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:50:08,849 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:50:14,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:50:21,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2024-12-02 13:50:21,380 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:50:21,380 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569084632]
[2024-12-02 13:50:21,380 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569084632] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:50:21,380 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:50:21,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:50:21,380 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597430167]
[2024-12-02 13:50:21,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:50:21,383 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:50:21,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:50:21,386 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:50:21,386 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:50:21,388 INFO  L87              Difference]: Start difference. First operand 7827 states and 11731 transitions. Second operand  has 5 states, 5 states have (on average 714.0) internal successors, (3570), 5 states have internal predecessors, (3570), 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)
[2024-12-02 13:50:21,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:50:21,560 INFO  L93              Difference]: Finished difference Result 14770 states and 22139 transitions.
[2024-12-02 13:50:21,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:50:21,561 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 714.0) internal successors, (3570), 5 states have internal predecessors, (3570), 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 3924
[2024-12-02 13:50:21,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:50:21,584 INFO  L225             Difference]: With dead ends: 14770
[2024-12-02 13:50:21,584 INFO  L226             Difference]: Without dead ends: 7831
[2024-12-02 13:50:21,591 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
[2024-12-02 13:50:21,592 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 31913 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42556 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:50:21,592 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42556 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:50:21,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7831 states.
[2024-12-02 13:50:21,715 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 7829.
[2024-12-02 13:50:21,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7829 states, 7828 states have (on average 1.4988502810424118) internal successors, (11733), 7828 states have internal predecessors, (11733), 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)
[2024-12-02 13:50:21,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11733 transitions.
[2024-12-02 13:50:21,741 INFO  L78                 Accepts]: Start accepts. Automaton has 7829 states and 11733 transitions. Word has length 3924
[2024-12-02 13:50:21,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:50:21,745 INFO  L471      AbstractCegarLoop]: Abstraction has 7829 states and 11733 transitions.
[2024-12-02 13:50:21,746 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 714.0) internal successors, (3570), 5 states have internal predecessors, (3570), 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)
[2024-12-02 13:50:21,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 7829 states and 11733 transitions.
[2024-12-02 13:50:21,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3926
[2024-12-02 13:50:21,886 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:50:21,888 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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[2024-12-02 13:50:21,888 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-12-02 13:50:21,888 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:50:21,890 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:50:21,892 INFO  L85        PathProgramCache]: Analyzing trace with hash -2121161872, now seen corresponding path program 1 times
[2024-12-02 13:50:21,892 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:50:21,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803685534]
[2024-12-02 13:50:21,893 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:50:21,893 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:50:26,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:50:32,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2024-12-02 13:50:32,940 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:50:32,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803685534]
[2024-12-02 13:50:32,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803685534] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:50:32,940 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:50:32,941 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:50:32,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318818233]
[2024-12-02 13:50:32,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:50:32,942 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:50:32,942 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:50:32,944 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:50:32,944 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:50:32,944 INFO  L87              Difference]: Start difference. First operand 7829 states and 11733 transitions. Second operand  has 5 states, 5 states have (on average 714.6) internal successors, (3573), 5 states have internal predecessors, (3573), 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)
[2024-12-02 13:50:33,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:50:33,057 INFO  L93              Difference]: Finished difference Result 14778 states and 22149 transitions.
[2024-12-02 13:50:33,057 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:50:33,058 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 714.6) internal successors, (3573), 5 states have internal predecessors, (3573), 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 3925
[2024-12-02 13:50:33,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:50:33,069 INFO  L225             Difference]: With dead ends: 14778
[2024-12-02 13:50:33,069 INFO  L226             Difference]: Without dead ends: 7833
[2024-12-02 13:50:33,074 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
[2024-12-02 13:50:33,074 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 31913 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42556 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:50:33,074 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42556 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:50:33,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7833 states.
[2024-12-02 13:50:33,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 7831.
[2024-12-02 13:50:33,210 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7831 states, 7830 states have (on average 1.4987228607918264) internal successors, (11735), 7830 states have internal predecessors, (11735), 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)
[2024-12-02 13:50:33,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 11735 transitions.
[2024-12-02 13:50:33,217 INFO  L78                 Accepts]: Start accepts. Automaton has 7831 states and 11735 transitions. Word has length 3925
[2024-12-02 13:50:33,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:50:33,219 INFO  L471      AbstractCegarLoop]: Abstraction has 7831 states and 11735 transitions.
[2024-12-02 13:50:33,219 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 714.6) internal successors, (3573), 5 states have internal predecessors, (3573), 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)
[2024-12-02 13:50:33,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 7831 states and 11735 transitions.
[2024-12-02 13:50:33,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3927
[2024-12-02 13:50:33,281 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:50:33,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:50:33,282 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-12-02 13:50:33,283 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:50:33,284 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:50:33,286 INFO  L85        PathProgramCache]: Analyzing trace with hash 1655536071, now seen corresponding path program 1 times
[2024-12-02 13:50:33,286 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:50:33,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803865587]
[2024-12-02 13:50:33,286 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:50:33,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:50:38,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:50:45,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2024-12-02 13:50:45,105 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:50:45,105 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803865587]
[2024-12-02 13:50:45,105 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803865587] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:50:45,105 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:50:45,106 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:50:45,106 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979942713]
[2024-12-02 13:50:45,106 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:50:45,108 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:50:45,108 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:50:45,110 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:50:45,110 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:50:45,110 INFO  L87              Difference]: Start difference. First operand 7831 states and 11735 transitions. Second operand  has 5 states, 5 states have (on average 715.2) internal successors, (3576), 5 states have internal predecessors, (3576), 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)
[2024-12-02 13:50:45,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:50:45,307 INFO  L93              Difference]: Finished difference Result 14786 states and 22159 transitions.
[2024-12-02 13:50:45,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:50:45,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 715.2) internal successors, (3576), 5 states have internal predecessors, (3576), 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 3926
[2024-12-02 13:50:45,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:50:45,316 INFO  L225             Difference]: With dead ends: 14786
[2024-12-02 13:50:45,317 INFO  L226             Difference]: Without dead ends: 7835
[2024-12-02 13:50:45,321 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
[2024-12-02 13:50:45,321 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 31913 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42556 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:50:45,321 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42556 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-12-02 13:50:45,328 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7835 states.
[2024-12-02 13:50:45,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7835 to 7833.
[2024-12-02 13:50:45,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7833 states, 7832 states have (on average 1.4985955056179776) internal successors, (11737), 7832 states have internal predecessors, (11737), 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)
[2024-12-02 13:50:45,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7833 states to 7833 states and 11737 transitions.
[2024-12-02 13:50:45,394 INFO  L78                 Accepts]: Start accepts. Automaton has 7833 states and 11737 transitions. Word has length 3926
[2024-12-02 13:50:45,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:50:45,396 INFO  L471      AbstractCegarLoop]: Abstraction has 7833 states and 11737 transitions.
[2024-12-02 13:50:45,396 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 715.2) internal successors, (3576), 5 states have internal predecessors, (3576), 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)
[2024-12-02 13:50:45,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 7833 states and 11737 transitions.
[2024-12-02 13:50:45,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3928
[2024-12-02 13:50:45,459 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:50:45,461 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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[2024-12-02 13:50:45,461 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-12-02 13:50:45,461 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:50:45,462 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:50:45,464 INFO  L85        PathProgramCache]: Analyzing trace with hash -743636905, now seen corresponding path program 1 times
[2024-12-02 13:50:45,464 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:50:45,464 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812548469]
[2024-12-02 13:50:45,465 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:50:45,465 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:50:50,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:50:57,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2024-12-02 13:50:57,053 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:50:57,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812548469]
[2024-12-02 13:50:57,053 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812548469] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:50:57,053 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:50:57,053 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-12-02 13:50:57,053 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177253194]
[2024-12-02 13:50:57,053 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:50:57,055 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-12-02 13:50:57,055 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:50:57,056 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-12-02 13:50:57,056 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-12-02 13:50:57,057 INFO  L87              Difference]: Start difference. First operand 7833 states and 11737 transitions. Second operand  has 5 states, 5 states have (on average 715.8) internal successors, (3579), 5 states have internal predecessors, (3579), 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)
[2024-12-02 13:50:57,147 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:50:57,147 INFO  L93              Difference]: Finished difference Result 14794 states and 22169 transitions.
[2024-12-02 13:50:57,148 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:50:57,148 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 715.8) internal successors, (3579), 5 states have internal predecessors, (3579), 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 3927
[2024-12-02 13:50:57,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:50:57,155 INFO  L225             Difference]: With dead ends: 14794
[2024-12-02 13:50:57,156 INFO  L226             Difference]: Without dead ends: 7837
[2024-12-02 13:50:57,160 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
[2024-12-02 13:50:57,161 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 21276 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31919 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:50:57,161 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31919 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:50:57,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7837 states.
[2024-12-02 13:50:57,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7837 to 7835.
[2024-12-02 13:50:57,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7835 states, 7834 states have (on average 1.4984682154710238) internal successors, (11739), 7834 states have internal predecessors, (11739), 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)
[2024-12-02 13:50:57,229 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 11739 transitions.
[2024-12-02 13:50:57,230 INFO  L78                 Accepts]: Start accepts. Automaton has 7835 states and 11739 transitions. Word has length 3927
[2024-12-02 13:50:57,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:50:57,232 INFO  L471      AbstractCegarLoop]: Abstraction has 7835 states and 11739 transitions.
[2024-12-02 13:50:57,232 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 715.8) internal successors, (3579), 5 states have internal predecessors, (3579), 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)
[2024-12-02 13:50:57,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 7835 states and 11739 transitions.
[2024-12-02 13:50:57,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3929
[2024-12-02 13:50:57,295 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:50:57,297 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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[2024-12-02 13:50:57,297 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-12-02 13:50:57,297 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:50:57,298 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:50:57,300 INFO  L85        PathProgramCache]: Analyzing trace with hash -1839224736, now seen corresponding path program 1 times
[2024-12-02 13:50:57,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:50:57,300 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528907694]
[2024-12-02 13:50:57,301 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:50:57,301 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:51:01,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:51:07,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2024-12-02 13:51:07,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:51:07,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528907694]
[2024-12-02 13:51:07,731 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528907694] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:51:07,731 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:51:07,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:51:07,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199133641]
[2024-12-02 13:51:07,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:51:07,733 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:51:07,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:51:07,736 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:51:07,736 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:51:07,736 INFO  L87              Difference]: Start difference. First operand 7835 states and 11739 transitions. Second operand  has 4 states, 4 states have (on average 896.0) internal successors, (3584), 4 states have internal predecessors, (3584), 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)
[2024-12-02 13:51:07,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:51:07,826 INFO  L93              Difference]: Finished difference Result 14810 states and 22191 transitions.
[2024-12-02 13:51:07,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:51:07,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 896.0) internal successors, (3584), 4 states have internal predecessors, (3584), 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 3928
[2024-12-02 13:51:07,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:51:07,834 INFO  L225             Difference]: With dead ends: 14810
[2024-12-02 13:51:07,834 INFO  L226             Difference]: Without dead ends: 7847
[2024-12-02 13:51:07,838 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
[2024-12-02 13:51:07,839 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 4 mSDsluCounter, 21276 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31919 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:51:07,839 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31919 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:51:07,846 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7847 states.
[2024-12-02 13:51:07,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 7841.
[2024-12-02 13:51:07,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7841 states, 7840 states have (on average 1.498341836734694) internal successors, (11747), 7840 states have internal predecessors, (11747), 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)
[2024-12-02 13:51:07,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 11747 transitions.
[2024-12-02 13:51:07,907 INFO  L78                 Accepts]: Start accepts. Automaton has 7841 states and 11747 transitions. Word has length 3928
[2024-12-02 13:51:07,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:51:07,909 INFO  L471      AbstractCegarLoop]: Abstraction has 7841 states and 11747 transitions.
[2024-12-02 13:51:07,910 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 896.0) internal successors, (3584), 4 states have internal predecessors, (3584), 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)
[2024-12-02 13:51:07,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 7841 states and 11747 transitions.
[2024-12-02 13:51:07,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3930
[2024-12-02 13:51:07,972 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:51:07,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:51:07,974 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-12-02 13:51:07,974 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:51:07,975 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:51:07,977 INFO  L85        PathProgramCache]: Analyzing trace with hash -997831355, now seen corresponding path program 1 times
[2024-12-02 13:51:07,977 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:51:07,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922976896]
[2024-12-02 13:51:07,977 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:51:07,977 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:51:12,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:51:17,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2024-12-02 13:51:17,536 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:51:17,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922976896]
[2024-12-02 13:51:17,536 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922976896] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:51:17,536 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:51:17,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:51:17,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942642516]
[2024-12-02 13:51:17,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:51:17,538 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:51:17,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:51:17,540 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:51:17,540 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:51:17,541 INFO  L87              Difference]: Start difference. First operand 7841 states and 11747 transitions. Second operand  has 4 states, 4 states have (on average 896.75) internal successors, (3587), 4 states have internal predecessors, (3587), 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)
[2024-12-02 13:51:17,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:51:17,644 INFO  L93              Difference]: Finished difference Result 14822 states and 22207 transitions.
[2024-12-02 13:51:17,644 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:51:17,645 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 896.75) internal successors, (3587), 4 states have internal predecessors, (3587), 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 3929
[2024-12-02 13:51:17,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:51:17,652 INFO  L225             Difference]: With dead ends: 14822
[2024-12-02 13:51:17,652 INFO  L226             Difference]: Without dead ends: 7845
[2024-12-02 13:51:17,656 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
[2024-12-02 13:51:17,656 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 0 mSDsluCounter, 21270 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31913 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:51:17,657 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31913 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:51:17,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7845 states.
[2024-12-02 13:51:17,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7843.
[2024-12-02 13:51:17,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7843 states, 7842 states have (on average 1.498214741137465) internal successors, (11749), 7842 states have internal predecessors, (11749), 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)
[2024-12-02 13:51:17,757 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 11749 transitions.
[2024-12-02 13:51:17,757 INFO  L78                 Accepts]: Start accepts. Automaton has 7843 states and 11749 transitions. Word has length 3929
[2024-12-02 13:51:17,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:51:17,759 INFO  L471      AbstractCegarLoop]: Abstraction has 7843 states and 11749 transitions.
[2024-12-02 13:51:17,759 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 896.75) internal successors, (3587), 4 states have internal predecessors, (3587), 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)
[2024-12-02 13:51:17,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 7843 states and 11749 transitions.
[2024-12-02 13:51:17,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3931
[2024-12-02 13:51:17,819 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:51:17,820 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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[2024-12-02 13:51:17,821 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-12-02 13:51:17,821 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:51:17,822 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:51:17,822 INFO  L85        PathProgramCache]: Analyzing trace with hash -893388647, now seen corresponding path program 1 times
[2024-12-02 13:51:17,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:51:17,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791672549]
[2024-12-02 13:51:17,823 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:51:17,823 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:51:22,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:51:29,646 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2024-12-02 13:51:29,646 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:51:29,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791672549]
[2024-12-02 13:51:29,647 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791672549] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:51:29,647 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:51:29,647 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:51:29,647 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442346522]
[2024-12-02 13:51:29,647 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:51:29,650 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:51:29,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:51:29,653 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:51:29,653 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:51:29,654 INFO  L87              Difference]: Start difference. First operand 7843 states and 11749 transitions. Second operand  has 4 states, 4 states have (on average 897.5) internal successors, (3590), 4 states have internal predecessors, (3590), 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)
[2024-12-02 13:51:29,749 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:51:29,749 INFO  L93              Difference]: Finished difference Result 14836 states and 22225 transitions.
[2024-12-02 13:51:29,750 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:51:29,750 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 897.5) internal successors, (3590), 4 states have internal predecessors, (3590), 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 3930
[2024-12-02 13:51:29,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:51:29,762 INFO  L225             Difference]: With dead ends: 14836
[2024-12-02 13:51:29,762 INFO  L226             Difference]: Without dead ends: 7857
[2024-12-02 13:51:29,767 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
[2024-12-02 13:51:29,768 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 3 mSDsluCounter, 21276 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31919 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:51:29,768 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31919 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:51:29,776 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7857 states.
[2024-12-02 13:51:29,842 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7847.
[2024-12-02 13:51:29,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7847 states, 7846 states have (on average 1.4982156512872802) internal successors, (11755), 7846 states have internal predecessors, (11755), 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)
[2024-12-02 13:51:29,860 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 11755 transitions.
[2024-12-02 13:51:29,861 INFO  L78                 Accepts]: Start accepts. Automaton has 7847 states and 11755 transitions. Word has length 3930
[2024-12-02 13:51:29,863 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:51:29,863 INFO  L471      AbstractCegarLoop]: Abstraction has 7847 states and 11755 transitions.
[2024-12-02 13:51:29,864 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 897.5) internal successors, (3590), 4 states have internal predecessors, (3590), 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)
[2024-12-02 13:51:29,864 INFO  L276                IsEmpty]: Start isEmpty. Operand 7847 states and 11755 transitions.
[2024-12-02 13:51:29,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3932
[2024-12-02 13:51:29,972 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:51:29,974 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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[2024-12-02 13:51:29,974 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-12-02 13:51:29,974 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:51:29,976 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:51:29,977 INFO  L85        PathProgramCache]: Analyzing trace with hash 972337548, now seen corresponding path program 1 times
[2024-12-02 13:51:29,977 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:51:29,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940621902]
[2024-12-02 13:51:29,978 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:51:29,978 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:51:33,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:51:40,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2024-12-02 13:51:40,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:51:40,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940621902]
[2024-12-02 13:51:40,694 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940621902] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:51:40,694 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 13:51:40,695 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-12-02 13:51:40,695 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134192495]
[2024-12-02 13:51:40,695 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:51:40,696 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-12-02 13:51:40,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:51:40,698 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-12-02 13:51:40,698 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-12-02 13:51:40,698 INFO  L87              Difference]: Start difference. First operand 7847 states and 11755 transitions. Second operand  has 4 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 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)
[2024-12-02 13:51:40,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:51:40,887 INFO  L93              Difference]: Finished difference Result 14850 states and 22247 transitions.
[2024-12-02 13:51:40,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-12-02 13:51:40,888 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 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 3931
[2024-12-02 13:51:40,890 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:51:40,894 INFO  L225             Difference]: With dead ends: 14850
[2024-12-02 13:51:40,894 INFO  L226             Difference]: Without dead ends: 7859
[2024-12-02 13:51:40,896 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
[2024-12-02 13:51:40,897 INFO  L435           NwaCegarLoop]: 10643 mSDtfsCounter, 4 mSDsluCounter, 21276 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31919 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:51:40,897 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31919 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 13:51:40,903 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7859 states.
[2024-12-02 13:51:40,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7859 to 7853.
[2024-12-02 13:51:40,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.498089658685685) internal successors, (11763), 7852 states have internal predecessors, (11763), 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)
[2024-12-02 13:51:40,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11763 transitions.
[2024-12-02 13:51:40,957 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11763 transitions. Word has length 3931
[2024-12-02 13:51:40,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:51:40,958 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11763 transitions.
[2024-12-02 13:51:40,959 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 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)
[2024-12-02 13:51:40,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11763 transitions.
[2024-12-02 13:51:41,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3933
[2024-12-02 13:51:41,018 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:51:41,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 13:51:41,020 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-12-02 13:51:41,020 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:51:41,021 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:51:41,023 INFO  L85        PathProgramCache]: Analyzing trace with hash -658964885, now seen corresponding path program 1 times
[2024-12-02 13:51:41,023 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:51:41,023 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690190932]
[2024-12-02 13:51:41,023 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:51:41,023 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:51:44,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:51:53,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:51:53,342 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:51:53,342 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690190932]
[2024-12-02 13:51:53,342 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690190932] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:51:53,342 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783101275]
[2024-12-02 13:51:53,343 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:51:53,343 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:51:53,343 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:51:53,345 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:51:53,345 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 13:52:04,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:52:04,125 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17278 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:52:04,233 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:52:04,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2024-12-02 13:52:04,794 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:52:04,794 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [783101275] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:52:04,794 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:52:04,795 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:52:04,795 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747241134]
[2024-12-02 13:52:04,795 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:52:04,798 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:52:04,799 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:52:04,800 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:52:04,800 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:52:04,801 INFO  L87              Difference]: Start difference. First operand 7853 states and 11763 transitions. Second operand  has 6 states, 6 states have (on average 635.1666666666666) internal successors, (3811), 6 states have internal predecessors, (3811), 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)
[2024-12-02 13:52:10,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:52:10,579 INFO  L93              Difference]: Finished difference Result 21371 states and 32014 transitions.
[2024-12-02 13:52:10,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:52:10,580 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 635.1666666666666) internal successors, (3811), 6 states have internal predecessors, (3811), 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 3932
[2024-12-02 13:52:10,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:52:10,590 INFO  L225             Difference]: With dead ends: 21371
[2024-12-02 13:52:10,590 INFO  L226             Difference]: Without dead ends: 14156
[2024-12-02 13:52:10,596 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3940 GetRequests, 3930 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:52:10,597 INFO  L435           NwaCegarLoop]: 8734 mSDtfsCounter, 10210 mSDsluCounter, 35638 mSDsCounter, 0 mSdLazyCounter, 9563 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 44372 SdHoareTripleChecker+Invalid, 9671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2024-12-02 13:52:10,597 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10210 Valid, 44372 Invalid, 9671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9563 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2024-12-02 13:52:10,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14156 states.
[2024-12-02 13:52:10,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14156 to 7853.
[2024-12-02 13:52:10,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4979623025980642) internal successors, (11762), 7852 states have internal predecessors, (11762), 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)
[2024-12-02 13:52:10,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11762 transitions.
[2024-12-02 13:52:10,716 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11762 transitions. Word has length 3932
[2024-12-02 13:52:10,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:52:10,717 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11762 transitions.
[2024-12-02 13:52:10,717 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 635.1666666666666) internal successors, (3811), 6 states have internal predecessors, (3811), 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)
[2024-12-02 13:52:10,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11762 transitions.
[2024-12-02 13:52:10,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3934
[2024-12-02 13:52:10,777 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:52:10,778 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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[2024-12-02 13:52:10,831 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 13:52:10,979 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-12-02 13:52:10,979 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:52:10,980 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:52:10,981 INFO  L85        PathProgramCache]: Analyzing trace with hash -1439774563, now seen corresponding path program 1 times
[2024-12-02 13:52:10,981 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:52:10,981 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039084831]
[2024-12-02 13:52:10,981 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:52:10,981 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:52:14,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:52:22,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:52:22,985 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:52:22,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039084831]
[2024-12-02 13:52:22,985 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039084831] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:52:22,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597185295]
[2024-12-02 13:52:22,985 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:52:22,985 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:52:22,986 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:52:22,987 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:52:22,988 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 13:52:35,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:52:35,563 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17281 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:52:35,638 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:52:36,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked.
[2024-12-02 13:52:36,086 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:52:36,086 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [597185295] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:52:36,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:52:36,087 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:52:36,087 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776326868]
[2024-12-02 13:52:36,087 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:52:36,090 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:52:36,090 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:52:36,092 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:52:36,092 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:52:36,092 INFO  L87              Difference]: Start difference. First operand 7853 states and 11762 transitions. Second operand  has 6 states, 6 states have (on average 636.0) internal successors, (3816), 6 states have internal predecessors, (3816), 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)
[2024-12-02 13:52:41,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:52:41,983 INFO  L93              Difference]: Finished difference Result 21367 states and 32007 transitions.
[2024-12-02 13:52:41,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:52:41,984 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 636.0) internal successors, (3816), 6 states have internal predecessors, (3816), 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 3933
[2024-12-02 13:52:41,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:52:41,992 INFO  L225             Difference]: With dead ends: 21367
[2024-12-02 13:52:41,992 INFO  L226             Difference]: Without dead ends: 14160
[2024-12-02 13:52:41,996 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3941 GetRequests, 3931 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:52:41,997 INFO  L435           NwaCegarLoop]: 8735 mSDtfsCounter, 10210 mSDsluCounter, 35639 mSDsCounter, 0 mSdLazyCounter, 9561 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 44374 SdHoareTripleChecker+Invalid, 9669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2024-12-02 13:52:41,997 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10210 Valid, 44374 Invalid, 9669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9561 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2024-12-02 13:52:42,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14160 states.
[2024-12-02 13:52:42,069 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 7853.
[2024-12-02 13:52:42,075 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4978349465104432) internal successors, (11761), 7852 states have internal predecessors, (11761), 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)
[2024-12-02 13:52:42,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11761 transitions.
[2024-12-02 13:52:42,083 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11761 transitions. Word has length 3933
[2024-12-02 13:52:42,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:52:42,083 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11761 transitions.
[2024-12-02 13:52:42,083 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 636.0) internal successors, (3816), 6 states have internal predecessors, (3816), 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)
[2024-12-02 13:52:42,083 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11761 transitions.
[2024-12-02 13:52:42,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3935
[2024-12-02 13:52:42,145 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:52:42,146 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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[2024-12-02 13:52:42,197 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 13:52:42,346 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-12-02 13:52:42,346 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:52:42,348 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:52:42,348 INFO  L85        PathProgramCache]: Analyzing trace with hash 796118457, now seen corresponding path program 1 times
[2024-12-02 13:52:42,348 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:52:42,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530201939]
[2024-12-02 13:52:42,349 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:52:42,349 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:52:46,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:52:55,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:52:55,288 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:52:55,288 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530201939]
[2024-12-02 13:52:55,288 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530201939] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:52:55,288 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006739728]
[2024-12-02 13:52:55,289 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:52:55,289 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:52:55,289 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:52:55,291 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:52:55,292 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 13:53:06,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:53:06,384 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17284 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:53:06,428 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:53:06,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2024-12-02 13:53:06,822 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:53:06,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006739728] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:53:06,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:53:06,823 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:53:06,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729958242]
[2024-12-02 13:53:06,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:53:06,825 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:53:06,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:53:06,827 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:53:06,827 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:53:06,828 INFO  L87              Difference]: Start difference. First operand 7853 states and 11761 transitions. Second operand  has 6 states, 6 states have (on average 638.5) internal successors, (3831), 6 states have internal predecessors, (3831), 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)
[2024-12-02 13:53:10,671 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:53:10,671 INFO  L93              Difference]: Finished difference Result 21355 states and 31988 transitions.
[2024-12-02 13:53:10,671 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:53:10,672 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 638.5) internal successors, (3831), 6 states have internal predecessors, (3831), 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 3934
[2024-12-02 13:53:10,672 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:53:10,683 INFO  L225             Difference]: With dead ends: 21355
[2024-12-02 13:53:10,683 INFO  L226             Difference]: Without dead ends: 14176
[2024-12-02 13:53:10,690 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3942 GetRequests, 3932 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:53:10,690 INFO  L435           NwaCegarLoop]: 8736 mSDtfsCounter, 20135 mSDsluCounter, 27569 mSDsCounter, 0 mSdLazyCounter, 7233 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20135 SdHoareTripleChecker+Valid, 36305 SdHoareTripleChecker+Invalid, 7341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2024-12-02 13:53:10,691 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20135 Valid, 36305 Invalid, 7341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7233 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2024-12-02 13:53:10,703 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14176 states.
[2024-12-02 13:53:10,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14176 to 7853.
[2024-12-02 13:53:10,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4977075904228223) internal successors, (11760), 7852 states have internal predecessors, (11760), 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)
[2024-12-02 13:53:10,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11760 transitions.
[2024-12-02 13:53:10,794 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11760 transitions. Word has length 3934
[2024-12-02 13:53:10,794 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:53:10,794 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11760 transitions.
[2024-12-02 13:53:10,795 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 638.5) internal successors, (3831), 6 states have internal predecessors, (3831), 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)
[2024-12-02 13:53:10,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11760 transitions.
[2024-12-02 13:53:10,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3936
[2024-12-02 13:53:10,882 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:53:10,883 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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[2024-12-02 13:53:10,941 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 13:53:11,083 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-12-02 13:53:11,084 INFO  L396      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:53:11,085 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:53:11,086 INFO  L85        PathProgramCache]: Analyzing trace with hash 749970670, now seen corresponding path program 1 times
[2024-12-02 13:53:11,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:53:11,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124134518]
[2024-12-02 13:53:11,087 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:53:11,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:53:15,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:53:21,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:53:21,408 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:53:21,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124134518]
[2024-12-02 13:53:21,408 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124134518] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:53:21,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450325941]
[2024-12-02 13:53:21,408 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:53:21,408 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:53:21,409 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:53:21,410 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:53:21,411 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 13:53:33,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:53:33,158 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17287 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:53:33,196 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:53:33,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked.
[2024-12-02 13:53:33,558 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:53:33,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450325941] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:53:33,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:53:33,559 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:53:33,559 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896635979]
[2024-12-02 13:53:33,559 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:53:33,560 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:53:33,560 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:53:33,562 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:53:33,562 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:53:33,562 INFO  L87              Difference]: Start difference. First operand 7853 states and 11760 transitions. Second operand  has 6 states, 6 states have (on average 637.5) internal successors, (3825), 6 states have internal predecessors, (3825), 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)
[2024-12-02 13:53:38,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:53:38,832 INFO  L93              Difference]: Finished difference Result 21363 states and 31998 transitions.
[2024-12-02 13:53:38,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:53:38,834 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 637.5) internal successors, (3825), 6 states have internal predecessors, (3825), 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 3935
[2024-12-02 13:53:38,834 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:53:38,843 INFO  L225             Difference]: With dead ends: 21363
[2024-12-02 13:53:38,843 INFO  L226             Difference]: Without dead ends: 14168
[2024-12-02 13:53:38,849 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3943 GetRequests, 3933 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:53:38,849 INFO  L435           NwaCegarLoop]: 8737 mSDtfsCounter, 10213 mSDsluCounter, 35641 mSDsCounter, 0 mSdLazyCounter, 9557 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10213 SdHoareTripleChecker+Valid, 44378 SdHoareTripleChecker+Invalid, 9665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2024-12-02 13:53:38,849 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10213 Valid, 44378 Invalid, 9665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9557 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2024-12-02 13:53:38,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14168 states.
[2024-12-02 13:53:38,923 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14168 to 7853.
[2024-12-02 13:53:38,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4975802343352012) internal successors, (11759), 7852 states have internal predecessors, (11759), 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)
[2024-12-02 13:53:38,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11759 transitions.
[2024-12-02 13:53:38,936 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11759 transitions. Word has length 3935
[2024-12-02 13:53:38,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:53:38,936 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11759 transitions.
[2024-12-02 13:53:38,937 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 637.5) internal successors, (3825), 6 states have internal predecessors, (3825), 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)
[2024-12-02 13:53:38,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11759 transitions.
[2024-12-02 13:53:39,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3937
[2024-12-02 13:53:39,001 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:53:39,002 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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[2024-12-02 13:53:39,056 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-12-02 13:53:39,203 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-12-02 13:53:39,203 INFO  L396      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:53:39,204 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:53:39,205 INFO  L85        PathProgramCache]: Analyzing trace with hash -1820562187, now seen corresponding path program 1 times
[2024-12-02 13:53:39,205 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:53:39,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213539194]
[2024-12-02 13:53:39,205 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:53:39,205 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:53:43,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:53:51,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:53:51,296 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:53:51,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213539194]
[2024-12-02 13:53:51,297 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213539194] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:53:51,297 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058365320]
[2024-12-02 13:53:51,297 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:53:51,298 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:53:51,298 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:53:51,300 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:53:51,301 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 13:54:01,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:54:02,062 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17290 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:54:02,099 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:54:02,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2024-12-02 13:54:02,467 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:54:02,467 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058365320] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:54:02,467 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:54:02,468 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:54:02,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100009987]
[2024-12-02 13:54:02,468 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:54:02,471 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:54:02,471 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:54:02,473 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:54:02,473 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:54:02,473 INFO  L87              Difference]: Start difference. First operand 7853 states and 11759 transitions. Second operand  has 6 states, 6 states have (on average 638.3333333333334) internal successors, (3830), 6 states have internal predecessors, (3830), 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)
[2024-12-02 13:54:06,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:54:06,164 INFO  L93              Difference]: Finished difference Result 21359 states and 31991 transitions.
[2024-12-02 13:54:06,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:54:06,165 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 638.3333333333334) internal successors, (3830), 6 states have internal predecessors, (3830), 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 3936
[2024-12-02 13:54:06,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:54:06,175 INFO  L225             Difference]: With dead ends: 21359
[2024-12-02 13:54:06,175 INFO  L226             Difference]: Without dead ends: 14172
[2024-12-02 13:54:06,181 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3944 GetRequests, 3934 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:54:06,182 INFO  L435           NwaCegarLoop]: 8738 mSDtfsCounter, 20125 mSDsluCounter, 27571 mSDsCounter, 0 mSdLazyCounter, 7229 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20125 SdHoareTripleChecker+Valid, 36309 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-12-02 13:54:06,182 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20125 Valid, 36309 Invalid, 7337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7229 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-12-02 13:54:06,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14172 states.
[2024-12-02 13:54:06,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14172 to 7853.
[2024-12-02 13:54:06,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4974528782475802) internal successors, (11758), 7852 states have internal predecessors, (11758), 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)
[2024-12-02 13:54:06,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11758 transitions.
[2024-12-02 13:54:06,268 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11758 transitions. Word has length 3936
[2024-12-02 13:54:06,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:54:06,269 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11758 transitions.
[2024-12-02 13:54:06,269 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 638.3333333333334) internal successors, (3830), 6 states have internal predecessors, (3830), 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)
[2024-12-02 13:54:06,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11758 transitions.
[2024-12-02 13:54:06,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3938
[2024-12-02 13:54:06,332 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:54:06,333 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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[2024-12-02 13:54:06,386 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 13:54:06,533 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:54:06,533 INFO  L396      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:54:06,534 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:54:06,535 INFO  L85        PathProgramCache]: Analyzing trace with hash -1215294208, now seen corresponding path program 1 times
[2024-12-02 13:54:06,535 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:54:06,535 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319486537]
[2024-12-02 13:54:06,536 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:54:06,536 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:54:10,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:54:17,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:54:17,944 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:54:17,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319486537]
[2024-12-02 13:54:17,944 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319486537] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:54:17,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824640404]
[2024-12-02 13:54:17,945 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:54:17,945 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:54:17,945 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:54:17,947 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:54:17,947 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 13:54:28,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:54:28,614 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17293 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:54:28,675 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:54:29,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2024-12-02 13:54:29,159 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:54:29,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824640404] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:54:29,159 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:54:29,160 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:54:29,160 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587797499]
[2024-12-02 13:54:29,160 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:54:29,163 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:54:29,163 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:54:29,166 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:54:29,166 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:54:29,167 INFO  L87              Difference]: Start difference. First operand 7853 states and 11758 transitions. Second operand  has 6 states, 6 states have (on average 640.6666666666666) internal successors, (3844), 6 states have internal predecessors, (3844), 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)
[2024-12-02 13:54:32,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:54:32,848 INFO  L93              Difference]: Finished difference Result 21347 states and 31973 transitions.
[2024-12-02 13:54:32,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:54:32,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 640.6666666666666) internal successors, (3844), 6 states have internal predecessors, (3844), 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 3937
[2024-12-02 13:54:32,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:54:32,857 INFO  L225             Difference]: With dead ends: 21347
[2024-12-02 13:54:32,857 INFO  L226             Difference]: Without dead ends: 14188
[2024-12-02 13:54:32,862 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3945 GetRequests, 3935 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:54:32,863 INFO  L435           NwaCegarLoop]: 8739 mSDtfsCounter, 20139 mSDsluCounter, 27572 mSDsCounter, 0 mSdLazyCounter, 7227 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20139 SdHoareTripleChecker+Valid, 36311 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2024-12-02 13:54:32,863 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20139 Valid, 36311 Invalid, 7335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7227 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2024-12-02 13:54:32,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14188 states.
[2024-12-02 13:54:32,936 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14188 to 7853.
[2024-12-02 13:54:32,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4973255221599593) internal successors, (11757), 7852 states have internal predecessors, (11757), 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)
[2024-12-02 13:54:32,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11757 transitions.
[2024-12-02 13:54:32,949 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11757 transitions. Word has length 3937
[2024-12-02 13:54:32,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:54:32,950 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11757 transitions.
[2024-12-02 13:54:32,950 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 640.6666666666666) internal successors, (3844), 6 states have internal predecessors, (3844), 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)
[2024-12-02 13:54:32,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11757 transitions.
[2024-12-02 13:54:33,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3939
[2024-12-02 13:54:33,013 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:54:33,014 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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[2024-12-02 13:54:33,064 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 13:54:33,214 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:54:33,214 INFO  L396      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:54:33,215 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:54:33,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -264190198, now seen corresponding path program 1 times
[2024-12-02 13:54:33,216 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:54:33,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551137253]
[2024-12-02 13:54:33,216 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:54:33,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:54:38,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:54:45,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:54:45,778 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:54:45,779 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551137253]
[2024-12-02 13:54:45,779 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551137253] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:54:45,779 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724288144]
[2024-12-02 13:54:45,780 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:54:45,780 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:54:45,780 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:54:45,782 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:54:45,783 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 13:54:56,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:54:56,881 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17296 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:54:56,918 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:54:57,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2024-12-02 13:54:57,372 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:54:57,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [724288144] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:54:57,372 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:54:57,373 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:54:57,373 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642985152]
[2024-12-02 13:54:57,373 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:54:57,375 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:54:57,375 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:54:57,377 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:54:57,377 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:54:57,378 INFO  L87              Difference]: Start difference. First operand 7853 states and 11757 transitions. Second operand  has 6 states, 6 states have (on average 640.3333333333334) internal successors, (3842), 6 states have internal predecessors, (3842), 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)
[2024-12-02 13:55:02,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:55:02,812 INFO  L93              Difference]: Finished difference Result 21351 states and 31977 transitions.
[2024-12-02 13:55:02,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:55:02,813 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 640.3333333333334) internal successors, (3842), 6 states have internal predecessors, (3842), 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 3938
[2024-12-02 13:55:02,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:55:02,821 INFO  L225             Difference]: With dead ends: 21351
[2024-12-02 13:55:02,821 INFO  L226             Difference]: Without dead ends: 14184
[2024-12-02 13:55:02,824 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3946 GetRequests, 3936 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:55:02,825 INFO  L435           NwaCegarLoop]: 8740 mSDtfsCounter, 10217 mSDsluCounter, 35644 mSDsCounter, 0 mSdLazyCounter, 9551 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10217 SdHoareTripleChecker+Valid, 44384 SdHoareTripleChecker+Invalid, 9659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2024-12-02 13:55:02,825 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10217 Valid, 44384 Invalid, 9659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9551 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2024-12-02 13:55:02,833 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14184 states.
[2024-12-02 13:55:02,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 7853.
[2024-12-02 13:55:02,895 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4971981660723384) internal successors, (11756), 7852 states have internal predecessors, (11756), 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)
[2024-12-02 13:55:02,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11756 transitions.
[2024-12-02 13:55:02,902 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11756 transitions. Word has length 3938
[2024-12-02 13:55:02,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:55:02,903 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11756 transitions.
[2024-12-02 13:55:02,903 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 640.3333333333334) internal successors, (3842), 6 states have internal predecessors, (3842), 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)
[2024-12-02 13:55:02,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11756 transitions.
[2024-12-02 13:55:02,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3940
[2024-12-02 13:55:02,965 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:55:02,965 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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[2024-12-02 13:55:03,020 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-12-02 13:55:03,166 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:55:03,166 INFO  L396      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:55:03,167 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:55:03,167 INFO  L85        PathProgramCache]: Analyzing trace with hash -1757263986, now seen corresponding path program 1 times
[2024-12-02 13:55:03,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:55:03,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130556856]
[2024-12-02 13:55:03,167 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:55:03,167 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:55:07,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:55:13,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:55:13,689 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:55:13,689 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130556856]
[2024-12-02 13:55:13,689 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130556856] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:55:13,689 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876446009]
[2024-12-02 13:55:13,690 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:55:13,690 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:55:13,690 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:55:13,705 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:55:13,706 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 13:55:24,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:55:24,374 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17299 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:55:24,417 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:55:24,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2024-12-02 13:55:24,881 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:55:24,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876446009] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:55:24,881 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:55:24,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:55:24,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111901051]
[2024-12-02 13:55:24,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:55:24,883 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:55:24,883 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:55:24,885 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:55:24,885 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:55:24,885 INFO  L87              Difference]: Start difference. First operand 7853 states and 11756 transitions. Second operand  has 6 states, 6 states have (on average 642.6666666666666) internal successors, (3856), 6 states have internal predecessors, (3856), 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)
[2024-12-02 13:55:30,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:55:30,366 INFO  L93              Difference]: Finished difference Result 21339 states and 31959 transitions.
[2024-12-02 13:55:30,366 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:55:30,367 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 642.6666666666666) internal successors, (3856), 6 states have internal predecessors, (3856), 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 3939
[2024-12-02 13:55:30,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:55:30,378 INFO  L225             Difference]: With dead ends: 21339
[2024-12-02 13:55:30,378 INFO  L226             Difference]: Without dead ends: 14200
[2024-12-02 13:55:30,383 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3947 GetRequests, 3937 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:55:30,387 INFO  L435           NwaCegarLoop]: 8741 mSDtfsCounter, 10224 mSDsluCounter, 35645 mSDsCounter, 0 mSdLazyCounter, 9549 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10224 SdHoareTripleChecker+Valid, 44386 SdHoareTripleChecker+Invalid, 9657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2024-12-02 13:55:30,387 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10224 Valid, 44386 Invalid, 9657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9549 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2024-12-02 13:55:30,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14200 states.
[2024-12-02 13:55:30,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14200 to 7853.
[2024-12-02 13:55:30,472 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4970708099847172) internal successors, (11755), 7852 states have internal predecessors, (11755), 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)
[2024-12-02 13:55:30,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11755 transitions.
[2024-12-02 13:55:30,480 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11755 transitions. Word has length 3939
[2024-12-02 13:55:30,480 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:55:30,480 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11755 transitions.
[2024-12-02 13:55:30,481 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 642.6666666666666) internal successors, (3856), 6 states have internal predecessors, (3856), 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)
[2024-12-02 13:55:30,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11755 transitions.
[2024-12-02 13:55:30,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3941
[2024-12-02 13:55:30,637 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:55:30,638 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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[2024-12-02 13:55:30,694 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 13:55:30,838 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2024-12-02 13:55:30,839 INFO  L396      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:55:30,840 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:55:30,840 INFO  L85        PathProgramCache]: Analyzing trace with hash 677420671, now seen corresponding path program 1 times
[2024-12-02 13:55:30,840 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:55:30,840 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874732199]
[2024-12-02 13:55:30,841 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:55:30,841 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:55:35,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:55:42,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:55:42,354 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:55:42,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874732199]
[2024-12-02 13:55:42,354 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874732199] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:55:42,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083898473]
[2024-12-02 13:55:42,354 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:55:42,355 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:55:42,355 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:55:42,356 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:55:42,357 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 13:55:53,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:55:53,155 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17302 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:55:53,212 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:55:53,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked.
[2024-12-02 13:55:53,621 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:55:53,621 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083898473] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:55:53,621 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:55:53,622 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:55:53,622 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844518997]
[2024-12-02 13:55:53,622 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:55:53,625 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:55:53,625 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:55:53,627 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:55:53,627 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:55:53,628 INFO  L87              Difference]: Start difference. First operand 7853 states and 11755 transitions. Second operand  has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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)
[2024-12-02 13:55:59,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:55:59,128 INFO  L93              Difference]: Finished difference Result 21343 states and 31963 transitions.
[2024-12-02 13:55:59,129 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:55:59,129 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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 3940
[2024-12-02 13:55:59,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:55:59,138 INFO  L225             Difference]: With dead ends: 21343
[2024-12-02 13:55:59,138 INFO  L226             Difference]: Without dead ends: 14192
[2024-12-02 13:55:59,142 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3948 GetRequests, 3938 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:55:59,143 INFO  L435           NwaCegarLoop]: 8742 mSDtfsCounter, 10217 mSDsluCounter, 35646 mSDsCounter, 0 mSdLazyCounter, 9547 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10217 SdHoareTripleChecker+Valid, 44388 SdHoareTripleChecker+Invalid, 9655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2024-12-02 13:55:59,143 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10217 Valid, 44388 Invalid, 9655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9547 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2024-12-02 13:55:59,152 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14192 states.
[2024-12-02 13:55:59,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 7853.
[2024-12-02 13:55:59,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4969434538970963) internal successors, (11754), 7852 states have internal predecessors, (11754), 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)
[2024-12-02 13:55:59,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11754 transitions.
[2024-12-02 13:55:59,225 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11754 transitions. Word has length 3940
[2024-12-02 13:55:59,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:55:59,225 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11754 transitions.
[2024-12-02 13:55:59,226 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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)
[2024-12-02 13:55:59,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11754 transitions.
[2024-12-02 13:55:59,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3942
[2024-12-02 13:55:59,287 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:55:59,288 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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[2024-12-02 13:55:59,346 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 13:55:59,488 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-12-02 13:55:59,488 INFO  L396      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:55:59,489 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:55:59,490 INFO  L85        PathProgramCache]: Analyzing trace with hash 1311575363, now seen corresponding path program 1 times
[2024-12-02 13:55:59,490 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:55:59,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541013716]
[2024-12-02 13:55:59,490 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:55:59,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:56:03,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:56:10,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:56:10,942 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:56:10,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541013716]
[2024-12-02 13:56:10,942 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541013716] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:56:10,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67781310]
[2024-12-02 13:56:10,943 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:56:10,943 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:56:10,943 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:56:10,944 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:56:10,945 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 13:56:22,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:56:22,478 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17305 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:56:22,515 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:56:23,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked.
[2024-12-02 13:56:23,023 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:56:23,023 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [67781310] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:56:23,023 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:56:23,023 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:56:23,023 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449268660]
[2024-12-02 13:56:23,023 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:56:23,025 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:56:23,025 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:56:23,026 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:56:23,027 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:56:23,027 INFO  L87              Difference]: Start difference. First operand 7853 states and 11754 transitions. Second operand  has 6 states, 6 states have (on average 645.3333333333334) internal successors, (3872), 6 states have internal predecessors, (3872), 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)
[2024-12-02 13:56:26,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:56:26,583 INFO  L93              Difference]: Finished difference Result 21327 states and 31939 transitions.
[2024-12-02 13:56:26,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:56:26,584 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 645.3333333333334) internal successors, (3872), 6 states have internal predecessors, (3872), 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 3941
[2024-12-02 13:56:26,584 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:56:26,591 INFO  L225             Difference]: With dead ends: 21327
[2024-12-02 13:56:26,591 INFO  L226             Difference]: Without dead ends: 14216
[2024-12-02 13:56:26,594 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3949 GetRequests, 3939 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:56:26,594 INFO  L435           NwaCegarLoop]: 8743 mSDtfsCounter, 20159 mSDsluCounter, 27576 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20159 SdHoareTripleChecker+Valid, 36319 SdHoareTripleChecker+Invalid, 7327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2024-12-02 13:56:26,595 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20159 Valid, 36319 Invalid, 7327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7219 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2024-12-02 13:56:26,605 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14216 states.
[2024-12-02 13:56:26,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14216 to 7853.
[2024-12-02 13:56:26,663 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4968160978094753) internal successors, (11753), 7852 states have internal predecessors, (11753), 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)
[2024-12-02 13:56:26,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11753 transitions.
[2024-12-02 13:56:26,670 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11753 transitions. Word has length 3941
[2024-12-02 13:56:26,671 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:56:26,671 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11753 transitions.
[2024-12-02 13:56:26,671 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 645.3333333333334) internal successors, (3872), 6 states have internal predecessors, (3872), 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)
[2024-12-02 13:56:26,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11753 transitions.
[2024-12-02 13:56:26,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3943
[2024-12-02 13:56:26,788 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:56:26,789 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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[2024-12-02 13:56:26,845 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 13:56:26,989 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-12-02 13:56:26,989 INFO  L396      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:56:26,990 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:56:26,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -1438823301, now seen corresponding path program 1 times
[2024-12-02 13:56:26,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:56:26,991 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113322222]
[2024-12-02 13:56:26,991 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:56:26,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:56:31,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:56:38,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:56:38,900 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:56:38,900 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113322222]
[2024-12-02 13:56:38,900 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113322222] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:56:38,900 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154087700]
[2024-12-02 13:56:38,901 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:56:38,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:56:38,901 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:56:38,903 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:56:38,905 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 13:56:50,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:56:50,320 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17308 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:56:50,357 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:56:50,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2024-12-02 13:56:50,851 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:56:50,851 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154087700] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:56:50,851 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:56:50,851 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:56:50,851 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726479191]
[2024-12-02 13:56:50,851 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:56:50,853 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:56:50,853 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:56:50,854 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:56:50,854 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:56:50,855 INFO  L87              Difference]: Start difference. First operand 7853 states and 11753 transitions. Second operand  has 6 states, 6 states have (on average 646.1666666666666) internal successors, (3877), 6 states have internal predecessors, (3877), 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)
[2024-12-02 13:56:56,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:56:56,218 INFO  L93              Difference]: Finished difference Result 21323 states and 31932 transitions.
[2024-12-02 13:56:56,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:56:56,219 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 646.1666666666666) internal successors, (3877), 6 states have internal predecessors, (3877), 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 3942
[2024-12-02 13:56:56,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:56:56,227 INFO  L225             Difference]: With dead ends: 21323
[2024-12-02 13:56:56,227 INFO  L226             Difference]: Without dead ends: 14220
[2024-12-02 13:56:56,230 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3950 GetRequests, 3940 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:56:56,230 INFO  L435           NwaCegarLoop]: 8744 mSDtfsCounter, 10230 mSDsluCounter, 35648 mSDsCounter, 0 mSdLazyCounter, 9543 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10230 SdHoareTripleChecker+Valid, 44392 SdHoareTripleChecker+Invalid, 9651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:56:56,231 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10230 Valid, 44392 Invalid, 9651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9543 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-12-02 13:56:56,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14220 states.
[2024-12-02 13:56:56,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 7853.
[2024-12-02 13:56:56,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4966887417218544) internal successors, (11752), 7852 states have internal predecessors, (11752), 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)
[2024-12-02 13:56:56,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11752 transitions.
[2024-12-02 13:56:56,315 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11752 transitions. Word has length 3942
[2024-12-02 13:56:56,315 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:56:56,315 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11752 transitions.
[2024-12-02 13:56:56,315 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 646.1666666666666) internal successors, (3877), 6 states have internal predecessors, (3877), 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)
[2024-12-02 13:56:56,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11752 transitions.
[2024-12-02 13:56:56,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3944
[2024-12-02 13:56:56,378 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:56:56,378 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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[2024-12-02 13:56:56,438 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 13:56:56,579 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:56:56,579 INFO  L396      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:56:56,579 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:56:56,580 INFO  L85        PathProgramCache]: Analyzing trace with hash 1082312785, now seen corresponding path program 1 times
[2024-12-02 13:56:56,580 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:56:56,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778821711]
[2024-12-02 13:56:56,580 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:56:56,580 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:57:00,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:57:08,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:57:08,381 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:57:08,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778821711]
[2024-12-02 13:57:08,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778821711] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:57:08,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699414268]
[2024-12-02 13:57:08,382 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:57:08,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:57:08,382 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:57:08,383 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:57:08,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 13:57:19,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:57:19,588 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17311 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:57:19,627 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:57:20,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2024-12-02 13:57:20,059 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:57:20,059 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699414268] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:57:20,059 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:57:20,059 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:57:20,059 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166895196]
[2024-12-02 13:57:20,059 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:57:20,062 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:57:20,062 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:57:20,063 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:57:20,063 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:57:20,064 INFO  L87              Difference]: Start difference. First operand 7853 states and 11752 transitions. Second operand  has 6 states, 6 states have (on average 644.3333333333334) internal successors, (3866), 6 states have internal predecessors, (3866), 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)
[2024-12-02 13:57:23,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:57:23,772 INFO  L93              Difference]: Finished difference Result 21335 states and 31947 transitions.
[2024-12-02 13:57:23,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:57:23,773 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 644.3333333333334) internal successors, (3866), 6 states have internal predecessors, (3866), 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 3943
[2024-12-02 13:57:23,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:57:23,783 INFO  L225             Difference]: With dead ends: 21335
[2024-12-02 13:57:23,783 INFO  L226             Difference]: Without dead ends: 14204
[2024-12-02 13:57:23,788 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3951 GetRequests, 3941 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:57:23,789 INFO  L435           NwaCegarLoop]: 8745 mSDtfsCounter, 20139 mSDsluCounter, 27578 mSDsCounter, 0 mSdLazyCounter, 7215 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20139 SdHoareTripleChecker+Valid, 36323 SdHoareTripleChecker+Invalid, 7323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-12-02 13:57:23,789 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20139 Valid, 36323 Invalid, 7323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7215 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-12-02 13:57:23,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14204 states.
[2024-12-02 13:57:23,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14204 to 7853.
[2024-12-02 13:57:23,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4965613856342332) internal successors, (11751), 7852 states have internal predecessors, (11751), 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)
[2024-12-02 13:57:23,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11751 transitions.
[2024-12-02 13:57:23,874 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11751 transitions. Word has length 3943
[2024-12-02 13:57:23,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:57:23,874 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11751 transitions.
[2024-12-02 13:57:23,875 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 644.3333333333334) internal successors, (3866), 6 states have internal predecessors, (3866), 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)
[2024-12-02 13:57:23,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11751 transitions.
[2024-12-02 13:57:23,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3945
[2024-12-02 13:57:23,938 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:57:23,939 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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[2024-12-02 13:57:23,999 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 13:57:24,139 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-12-02 13:57:24,140 INFO  L396      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:57:24,140 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:57:24,141 INFO  L85        PathProgramCache]: Analyzing trace with hash -365144890, now seen corresponding path program 1 times
[2024-12-02 13:57:24,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:57:24,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913341603]
[2024-12-02 13:57:24,141 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:57:24,141 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:57:28,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:57:35,924 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:57:35,924 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:57:35,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913341603]
[2024-12-02 13:57:35,924 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913341603] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:57:35,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221361613]
[2024-12-02 13:57:35,925 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:57:35,925 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:57:35,925 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:57:35,926 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:57:35,927 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 13:57:49,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:57:49,774 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17314 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:57:49,813 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:57:50,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2024-12-02 13:57:50,399 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:57:50,399 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [221361613] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:57:50,399 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:57:50,400 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:57:50,400 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979614530]
[2024-12-02 13:57:50,400 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:57:50,401 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:57:50,401 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:57:50,403 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:57:50,403 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:57:50,403 INFO  L87              Difference]: Start difference. First operand 7853 states and 11751 transitions. Second operand  has 6 states, 6 states have (on average 645.1666666666666) internal successors, (3871), 6 states have internal predecessors, (3871), 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)
[2024-12-02 13:57:54,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:57:54,072 INFO  L93              Difference]: Finished difference Result 21331 states and 31940 transitions.
[2024-12-02 13:57:54,073 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:57:54,074 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 645.1666666666666) internal successors, (3871), 6 states have internal predecessors, (3871), 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 3944
[2024-12-02 13:57:54,074 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:57:54,083 INFO  L225             Difference]: With dead ends: 21331
[2024-12-02 13:57:54,083 INFO  L226             Difference]: Without dead ends: 14208
[2024-12-02 13:57:54,089 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3952 GetRequests, 3942 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:57:54,089 INFO  L435           NwaCegarLoop]: 8746 mSDtfsCounter, 20139 mSDsluCounter, 27579 mSDsCounter, 0 mSdLazyCounter, 7213 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20139 SdHoareTripleChecker+Valid, 36325 SdHoareTripleChecker+Invalid, 7321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2024-12-02 13:57:54,090 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20139 Valid, 36325 Invalid, 7321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7213 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2024-12-02 13:57:54,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14208 states.
[2024-12-02 13:57:54,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14208 to 7853.
[2024-12-02 13:57:54,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4964340295466123) internal successors, (11750), 7852 states have internal predecessors, (11750), 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)
[2024-12-02 13:57:54,179 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11750 transitions.
[2024-12-02 13:57:54,179 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11750 transitions. Word has length 3944
[2024-12-02 13:57:54,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:57:54,179 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11750 transitions.
[2024-12-02 13:57:54,180 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 645.1666666666666) internal successors, (3871), 6 states have internal predecessors, (3871), 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)
[2024-12-02 13:57:54,180 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11750 transitions.
[2024-12-02 13:57:54,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3946
[2024-12-02 13:57:54,243 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:57:54,243 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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[2024-12-02 13:57:54,305 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 13:57:54,444 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-12-02 13:57:54,444 INFO  L396      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:57:54,445 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:57:54,445 INFO  L85        PathProgramCache]: Analyzing trace with hash 1762559487, now seen corresponding path program 1 times
[2024-12-02 13:57:54,445 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:57:54,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803420299]
[2024-12-02 13:57:54,445 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:57:54,445 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:57:58,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:58:05,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:58:05,263 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:58:05,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803420299]
[2024-12-02 13:58:05,263 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803420299] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:58:05,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034872665]
[2024-12-02 13:58:05,264 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:58:05,264 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:58:05,264 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:58:05,266 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:58:05,276 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 13:58:16,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:58:16,846 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17317 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:58:16,885 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:58:17,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked.
[2024-12-02 13:58:17,367 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:58:17,367 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034872665] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:58:17,367 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:58:17,367 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:58:17,367 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248882567]
[2024-12-02 13:58:17,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:58:17,369 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:58:17,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:58:17,370 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:58:17,370 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:58:17,371 INFO  L87              Difference]: Start difference. First operand 7853 states and 11750 transitions. Second operand  has 6 states, 6 states have (on average 647.3333333333334) internal successors, (3884), 6 states have internal predecessors, (3884), 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)
[2024-12-02 13:58:22,683 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:58:22,684 INFO  L93              Difference]: Finished difference Result 21319 states and 31923 transitions.
[2024-12-02 13:58:22,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:58:22,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 647.3333333333334) internal successors, (3884), 6 states have internal predecessors, (3884), 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 3945
[2024-12-02 13:58:22,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:58:22,694 INFO  L225             Difference]: With dead ends: 21319
[2024-12-02 13:58:22,694 INFO  L226             Difference]: Without dead ends: 14224
[2024-12-02 13:58:22,700 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3953 GetRequests, 3943 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:58:22,700 INFO  L435           NwaCegarLoop]: 8747 mSDtfsCounter, 10226 mSDsluCounter, 35651 mSDsCounter, 0 mSdLazyCounter, 9537 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10226 SdHoareTripleChecker+Valid, 44398 SdHoareTripleChecker+Invalid, 9645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:58:22,700 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10226 Valid, 44398 Invalid, 9645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9537 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-12-02 13:58:22,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14224 states.
[2024-12-02 13:58:22,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14224 to 7853.
[2024-12-02 13:58:22,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4963066734589914) internal successors, (11749), 7852 states have internal predecessors, (11749), 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)
[2024-12-02 13:58:22,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11749 transitions.
[2024-12-02 13:58:22,788 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11749 transitions. Word has length 3945
[2024-12-02 13:58:22,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:58:22,788 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11749 transitions.
[2024-12-02 13:58:22,789 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 647.3333333333334) internal successors, (3884), 6 states have internal predecessors, (3884), 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)
[2024-12-02 13:58:22,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11749 transitions.
[2024-12-02 13:58:22,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3947
[2024-12-02 13:58:22,929 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:58:22,929 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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[2024-12-02 13:58:22,991 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 13:58:23,130 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2024-12-02 13:58:23,130 INFO  L396      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:58:23,131 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:58:23,132 INFO  L85        PathProgramCache]: Analyzing trace with hash 1667156571, now seen corresponding path program 1 times
[2024-12-02 13:58:23,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:58:23,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846003398]
[2024-12-02 13:58:23,132 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:58:23,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:58:27,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:58:35,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:58:35,083 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:58:35,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846003398]
[2024-12-02 13:58:35,084 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846003398] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:58:35,084 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226492992]
[2024-12-02 13:58:35,085 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:58:35,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:58:35,085 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:58:35,087 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:58:35,088 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 13:58:48,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:58:48,118 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17320 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:58:48,158 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:58:48,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2024-12-02 13:58:48,777 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:58:48,777 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226492992] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:58:48,777 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:58:48,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:58:48,778 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608132076]
[2024-12-02 13:58:48,778 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:58:48,779 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:58:48,779 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:58:48,781 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:58:48,781 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:58:48,781 INFO  L87              Difference]: Start difference. First operand 7853 states and 11749 transitions. Second operand  has 6 states, 6 states have (on average 649.1666666666666) internal successors, (3895), 6 states have internal predecessors, (3895), 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)
[2024-12-02 13:58:52,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:58:52,307 INFO  L93              Difference]: Finished difference Result 21311 states and 31910 transitions.
[2024-12-02 13:58:52,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:58:52,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 649.1666666666666) internal successors, (3895), 6 states have internal predecessors, (3895), 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 3946
[2024-12-02 13:58:52,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:58:52,318 INFO  L225             Difference]: With dead ends: 21311
[2024-12-02 13:58:52,319 INFO  L226             Difference]: Without dead ends: 14236
[2024-12-02 13:58:52,324 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3954 GetRequests, 3944 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:58:52,325 INFO  L435           NwaCegarLoop]: 8748 mSDtfsCounter, 20163 mSDsluCounter, 27581 mSDsCounter, 0 mSdLazyCounter, 7209 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20163 SdHoareTripleChecker+Valid, 36329 SdHoareTripleChecker+Invalid, 7317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2024-12-02 13:58:52,325 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20163 Valid, 36329 Invalid, 7317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7209 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2024-12-02 13:58:52,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14236 states.
[2024-12-02 13:58:52,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14236 to 7853.
[2024-12-02 13:58:52,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4961793173713704) internal successors, (11748), 7852 states have internal predecessors, (11748), 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)
[2024-12-02 13:58:52,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11748 transitions.
[2024-12-02 13:58:52,411 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11748 transitions. Word has length 3946
[2024-12-02 13:58:52,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:58:52,412 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11748 transitions.
[2024-12-02 13:58:52,412 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 649.1666666666666) internal successors, (3895), 6 states have internal predecessors, (3895), 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)
[2024-12-02 13:58:52,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11748 transitions.
[2024-12-02 13:58:52,528 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3948
[2024-12-02 13:58:52,528 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:58:52,529 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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[2024-12-02 13:58:52,599 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 13:58:52,729 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-12-02 13:58:52,729 INFO  L396      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:58:52,731 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:58:52,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 2084345282, now seen corresponding path program 1 times
[2024-12-02 13:58:52,732 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:58:52,732 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127879423]
[2024-12-02 13:58:52,732 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:58:52,732 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:58:57,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:59:04,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:59:04,686 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:59:04,686 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127879423]
[2024-12-02 13:59:04,687 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127879423] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:59:04,687 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382897419]
[2024-12-02 13:59:04,687 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:59:04,687 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:59:04,687 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:59:04,689 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:59:04,690 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 13:59:16,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:59:16,698 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17323 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:59:16,737 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:59:17,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-12-02 13:59:17,314 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:59:17,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [382897419] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:59:17,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:59:17,316 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:59:17,316 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541191594]
[2024-12-02 13:59:17,316 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:59:17,318 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:59:17,318 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:59:17,319 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:59:17,319 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:59:17,320 INFO  L87              Difference]: Start difference. First operand 7853 states and 11748 transitions. Second operand  has 6 states, 6 states have (on average 651.6666666666666) internal successors, (3910), 6 states have internal predecessors, (3910), 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)
[2024-12-02 13:59:22,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:59:22,690 INFO  L93              Difference]: Finished difference Result 21299 states and 31891 transitions.
[2024-12-02 13:59:22,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:59:22,691 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 651.6666666666666) internal successors, (3910), 6 states have internal predecessors, (3910), 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 3947
[2024-12-02 13:59:22,691 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:59:22,702 INFO  L225             Difference]: With dead ends: 21299
[2024-12-02 13:59:22,702 INFO  L226             Difference]: Without dead ends: 14252
[2024-12-02 13:59:22,707 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3955 GetRequests, 3945 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:59:22,707 INFO  L435           NwaCegarLoop]: 8749 mSDtfsCounter, 10240 mSDsluCounter, 35653 mSDsCounter, 0 mSdLazyCounter, 9533 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10240 SdHoareTripleChecker+Valid, 44402 SdHoareTripleChecker+Invalid, 9641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 9533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-12-02 13:59:22,708 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10240 Valid, 44402 Invalid, 9641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 9533 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-12-02 13:59:22,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14252 states.
[2024-12-02 13:59:22,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 7853.
[2024-12-02 13:59:22,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4960519612837493) internal successors, (11747), 7852 states have internal predecessors, (11747), 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)
[2024-12-02 13:59:22,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11747 transitions.
[2024-12-02 13:59:22,812 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11747 transitions. Word has length 3947
[2024-12-02 13:59:22,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:59:22,812 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11747 transitions.
[2024-12-02 13:59:22,813 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 651.6666666666666) internal successors, (3910), 6 states have internal predecessors, (3910), 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)
[2024-12-02 13:59:22,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11747 transitions.
[2024-12-02 13:59:22,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3949
[2024-12-02 13:59:22,888 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:59:22,889 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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[2024-12-02 13:59:22,964 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 13:59:23,090 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:59:23,090 INFO  L396      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:59:23,091 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:59:23,092 INFO  L85        PathProgramCache]: Analyzing trace with hash -193497012, now seen corresponding path program 1 times
[2024-12-02 13:59:23,092 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:59:23,092 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617439578]
[2024-12-02 13:59:23,093 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:59:23,093 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:59:27,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:59:34,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 13:59:34,370 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 13:59:34,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617439578]
[2024-12-02 13:59:34,370 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617439578] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 13:59:34,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626713170]
[2024-12-02 13:59:34,371 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:59:34,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 13:59:34,371 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 13:59:34,373 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 13:59:34,374 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-12-02 13:59:46,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 13:59:46,932 INFO  L256         TraceCheckSpWp]: Trace formula consists of 17326 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 13:59:46,993 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 13:59:47,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2024-12-02 13:59:47,776 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 13:59:47,776 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [626713170] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 13:59:47,776 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-12-02 13:59:47,776 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11
[2024-12-02 13:59:47,777 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444585847]
[2024-12-02 13:59:47,777 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 13:59:47,779 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-12-02 13:59:47,779 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 13:59:47,782 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-12-02 13:59:47,782 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2024-12-02 13:59:47,783 INFO  L87              Difference]: Start difference. First operand 7853 states and 11747 transitions. Second operand  has 6 states, 6 states have (on average 654.1666666666666) internal successors, (3925), 6 states have internal predecessors, (3925), 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)
[2024-12-02 13:59:51,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 13:59:51,737 INFO  L93              Difference]: Finished difference Result 21287 states and 31872 transitions.
[2024-12-02 13:59:51,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-12-02 13:59:51,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 654.1666666666666) internal successors, (3925), 6 states have internal predecessors, (3925), 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 3948
[2024-12-02 13:59:51,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 13:59:51,749 INFO  L225             Difference]: With dead ends: 21287
[2024-12-02 13:59:51,749 INFO  L226             Difference]: Without dead ends: 14268
[2024-12-02 13:59:51,755 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3956 GetRequests, 3946 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2024-12-02 13:59:51,756 INFO  L435           NwaCegarLoop]: 8750 mSDtfsCounter, 20195 mSDsluCounter, 27583 mSDsCounter, 0 mSdLazyCounter, 7205 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20195 SdHoareTripleChecker+Valid, 36333 SdHoareTripleChecker+Invalid, 7313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2024-12-02 13:59:51,756 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [20195 Valid, 36333 Invalid, 7313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 7205 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2024-12-02 13:59:51,769 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14268 states.
[2024-12-02 13:59:51,863 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 7853.
[2024-12-02 13:59:51,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.4959246051961284) internal successors, (11746), 7852 states have internal predecessors, (11746), 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)
[2024-12-02 13:59:51,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11746 transitions.
[2024-12-02 13:59:51,881 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11746 transitions. Word has length 3948
[2024-12-02 13:59:51,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-12-02 13:59:51,882 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11746 transitions.
[2024-12-02 13:59:51,882 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 654.1666666666666) internal successors, (3925), 6 states have internal predecessors, (3925), 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)
[2024-12-02 13:59:51,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11746 transitions.
[2024-12-02 13:59:52,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3950
[2024-12-02 13:59:52,038 INFO  L210           NwaCegarLoop]: Found error trace
[2024-12-02 13:59:52,039 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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[2024-12-02 13:59:52,105 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-12-02 13:59:52,239 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2024-12-02 13:59:52,239 INFO  L396      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 13:59:52,240 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 13:59:52,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 1640098259, now seen corresponding path program 1 times
[2024-12-02 13:59:52,241 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 13:59:52,241 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37359566]
[2024-12-02 13:59:52,242 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 13:59:52,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 13:59:57,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 14:00:04,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 366 backedges. 104 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 14:00:04,451 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 14:00:04,451 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37359566]
[2024-12-02 14:00:04,451 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37359566] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 14:00:04,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021754979]
[2024-12-02 14:00:04,452 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 14:00:04,453 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 14:00:04,453 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 14:00:04,454 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 14:00:04,455 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53bfca99-31ad-4f8b-9063-8f72ca2cfaed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process