./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX --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 e9da64380f47890617fc4ad472069c1bd7b8c79b168e9d1d2018b4ba0fbfd33e
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 19:07:21,949 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-08 19:07:22,056 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-08 19:07:22,063 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 19:07:22,066 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 19:07:22,107 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 19:07:22,109 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 19:07:22,109 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 19:07:22,110 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 19:07:22,111 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-08 19:07:22,112 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 19:07:22,112 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 19:07:22,113 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 19:07:22,113 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-08 19:07:22,114 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-08 19:07:22,116 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 19:07:22,116 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-08 19:07:22,117 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-08 19:07:22,117 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-08 19:07:22,117 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 19:07:22,118 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 19:07:22,122 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 19:07:22,122 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-08 19:07:22,122 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-08 19:07:22,122 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-08 19:07:22,123 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 19:07:22,123 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-08 19:07:22,123 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 19:07:22,123 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-08 19:07:22,124 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:07:22,124 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 19:07:22,124 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 19:07:22,124 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 19:07:22,124 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-08 19:07:22,125 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 19:07:22,125 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 19:07:22,125 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 19:07:22,127 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 19:07:22,127 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 19:07:22,127 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX
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 -> e9da64380f47890617fc4ad472069c1bd7b8c79b168e9d1d2018b4ba0fbfd33e
[2024-11-08 19:07:22,394 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 19:07:22,436 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 19:07:22,440 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 19:07:22,442 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-08 19:07:22,442 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-08 19:07:22,444 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
Unable to find full path for "g++"
[2024-11-08 19:07:24,442 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-08 19:07:24,896 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-08 19:07:24,897 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
[2024-11-08 19:07:24,928 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/data/360348689/277eec087476425882fe96cfa7bc7954/FLAGdaccad05e
[2024-11-08 19:07:24,954 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/data/360348689/277eec087476425882fe96cfa7bc7954
[2024-11-08 19:07:24,956 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 19:07:24,958 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 19:07:24,960 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 19:07:24,960 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 19:07:24,967 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 19:07:24,968 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:07:24" (1/1) ...
[2024-11-08 19:07:24,969 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1467f78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:24, skipping insertion in model container
[2024-11-08 19:07:24,972 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:07:24" (1/1) ...
[2024-11-08 19:07:25,087 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-08 19:07:25,334 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_7eda7957-99eb-4889-869a-f6bd4b390607/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c[1180,1193]
[2024-11-08 19:07:26,173 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:07:26,190 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-08 19:07:26,202 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_7eda7957-99eb-4889-869a-f6bd4b390607/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-func-interl.c[1180,1193]
[2024-11-08 19:07:26,654 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 19:07:26,676 INFO  L204         MainTranslator]: Completed translation
[2024-11-08 19:07:26,676 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26 WrapperNode
[2024-11-08 19:07:26,677 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 19:07:26,678 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 19:07:26,678 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 19:07:26,678 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 19:07:26,686 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:26,819 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:29,213 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 15871
[2024-11-08 19:07:29,213 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 19:07:29,217 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 19:07:29,218 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 19:07:29,218 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 19:07:29,230 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:29,235 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:30,001 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:30,555 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 19:07:30,555 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:30,558 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:31,283 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:31,344 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:31,426 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:31,482 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:31,999 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 19:07:32,001 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 19:07:32,002 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 19:07:32,002 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-08 19:07:32,003 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (1/1) ...
[2024-11-08 19:07:32,009 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 19:07:32,022 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:07:32,036 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 19:07:32,041 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 19:07:32,069 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 19:07:32,069 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 19:07:32,069 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 19:07:32,069 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 19:07:32,874 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-08 19:07:32,876 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 19:08:08,367 INFO  L?                        ?]: Removed 8642 outVars from TransFormulas that were not future-live.
[2024-11-08 19:08:08,368 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-08 19:08:08,470 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 19:08:08,471 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-08 19:08:08,471 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:08:08 BoogieIcfgContainer
[2024-11-08 19:08:08,472 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 19:08:08,476 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 19:08:08,476 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 19:08:08,481 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-08 19:08:08,481 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:07:24" (1/3) ...
[2024-11-08 19:08:08,484 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c5335a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:08:08, skipping insertion in model container
[2024-11-08 19:08:08,484 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:07:26" (2/3) ...
[2024-11-08 19:08:08,485 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c5335a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:08:08, skipping insertion in model container
[2024-11-08 19:08:08,485 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:08:08" (3/3) ...
[2024-11-08 19:08:08,487 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.reader_writer.2.prop1-func-interl.c
[2024-11-08 19:08:08,504 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 19:08:08,505 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 19:08:08,648 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 19:08:08,657 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;@1d102ab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 19:08:08,658 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 19:08:08,678 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5843 states, 5841 states have (on average 1.499914398219483) internal successors, (8761), 5842 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:08,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2024-11-08 19:08:08,697 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:08,698 INFO  L215           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]
[2024-11-08 19:08:08,698 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:08,703 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:08,704 INFO  L85        PathProgramCache]: Analyzing trace with hash -581989717, now seen corresponding path program 1 times
[2024-11-08 19:08:08,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:08,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096535068]
[2024-11-08 19:08:08,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:08,716 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:08:09,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:10,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:10,146 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:08:10,147 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096535068]
[2024-11-08 19:08:10,148 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096535068] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:08:10,148 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:08:10,148 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:08:10,150 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068072414]
[2024-11-08 19:08:10,152 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:08:10,156 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:08:10,157 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:08:10,184 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:08:10,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:10,199 INFO  L87              Difference]: Start difference. First operand  has 5843 states, 5841 states have (on average 1.499914398219483) internal successors, (8761), 5842 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:10,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:08:10,547 INFO  L93              Difference]: Finished difference Result 11506 states and 17256 transitions.
[2024-11-08 19:08:10,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 19:08:10,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 195
[2024-11-08 19:08:10,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:08:10,594 INFO  L225             Difference]: With dead ends: 11506
[2024-11-08 19:08:10,595 INFO  L226             Difference]: Without dead ends: 5841
[2024-11-08 19:08:10,610 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:10,617 INFO  L432           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17500 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26253 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:08:10,619 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26253 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:08:10,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5841 states.
[2024-11-08 19:08:10,803 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 5841.
[2024-11-08 19:08:10,815 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5841 states, 5840 states have (on average 1.499486301369863) internal successors, (8757), 5840 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:10,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8757 transitions.
[2024-11-08 19:08:10,835 INFO  L78                 Accepts]: Start accepts. Automaton has 5841 states and 8757 transitions. Word has length 195
[2024-11-08 19:08:10,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:08:10,836 INFO  L471      AbstractCegarLoop]: Abstraction has 5841 states and 8757 transitions.
[2024-11-08 19:08:10,836 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:10,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 5841 states and 8757 transitions.
[2024-11-08 19:08:10,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2024-11-08 19:08:10,841 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:10,841 INFO  L215           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]
[2024-11-08 19:08:10,841 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 19:08:10,842 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:10,842 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:10,843 INFO  L85        PathProgramCache]: Analyzing trace with hash -860115651, now seen corresponding path program 1 times
[2024-11-08 19:08:10,843 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:10,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026581801]
[2024-11-08 19:08:10,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:10,844 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:08:10,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:11,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:11,446 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:08:11,446 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026581801]
[2024-11-08 19:08:11,446 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026581801] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:08:11,447 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:08:11,447 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:08:11,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791229897]
[2024-11-08 19:08:11,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:08:11,453 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:08:11,453 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:08:11,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:08:11,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:11,454 INFO  L87              Difference]: Start difference. First operand 5841 states and 8757 transitions. Second operand  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:11,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:08:11,676 INFO  L93              Difference]: Finished difference Result 11506 states and 17251 transitions.
[2024-11-08 19:08:11,676 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 19:08:11,677 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 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 196
[2024-11-08 19:08:11,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:08:11,698 INFO  L225             Difference]: With dead ends: 11506
[2024-11-08 19:08:11,698 INFO  L226             Difference]: Without dead ends: 5843
[2024-11-08 19:08:11,706 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:11,707 INFO  L432           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17496 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26249 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:08:11,708 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26249 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:08:11,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5843 states.
[2024-11-08 19:08:11,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5843.
[2024-11-08 19:08:11,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5843 states, 5842 states have (on average 1.499315302978432) internal successors, (8759), 5842 states have internal predecessors, (8759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:11,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8759 transitions.
[2024-11-08 19:08:11,834 INFO  L78                 Accepts]: Start accepts. Automaton has 5843 states and 8759 transitions. Word has length 196
[2024-11-08 19:08:11,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:08:11,836 INFO  L471      AbstractCegarLoop]: Abstraction has 5843 states and 8759 transitions.
[2024-11-08 19:08:11,836 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:11,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 5843 states and 8759 transitions.
[2024-11-08 19:08:11,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2024-11-08 19:08:11,840 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:11,841 INFO  L215           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]
[2024-11-08 19:08:11,841 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 19:08:11,842 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:11,842 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:11,843 INFO  L85        PathProgramCache]: Analyzing trace with hash -1991746108, now seen corresponding path program 1 times
[2024-11-08 19:08:11,843 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:11,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681942125]
[2024-11-08 19:08:11,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:11,843 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:08:11,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:12,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:12,371 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:08:12,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681942125]
[2024-11-08 19:08:12,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681942125] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:08:12,373 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:08:12,373 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:08:12,374 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358205219]
[2024-11-08 19:08:12,374 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:08:12,374 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:08:12,374 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:08:12,375 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:08:12,375 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:12,375 INFO  L87              Difference]: Start difference. First operand 5843 states and 8759 transitions. Second operand  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:12,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:08:12,592 INFO  L93              Difference]: Finished difference Result 11510 states and 17255 transitions.
[2024-11-08 19:08:12,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 19:08:12,593 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 197
[2024-11-08 19:08:12,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:08:12,610 INFO  L225             Difference]: With dead ends: 11510
[2024-11-08 19:08:12,611 INFO  L226             Difference]: Without dead ends: 5845
[2024-11-08 19:08:12,617 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:08:12,618 INFO  L432           NwaCegarLoop]: 8753 mSDtfsCounter, 0 mSDsluCounter, 17490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:08:12,619 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26243 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 19:08:12,629 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5845 states.
[2024-11-08 19:08:12,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5845.
[2024-11-08 19:08:12,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5845 states, 5844 states have (on average 1.4991444216290213) internal successors, (8761), 5844 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:12,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8761 transitions.
[2024-11-08 19:08:12,757 INFO  L78                 Accepts]: Start accepts. Automaton has 5845 states and 8761 transitions. Word has length 197
[2024-11-08 19:08:12,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:08:12,758 INFO  L471      AbstractCegarLoop]: Abstraction has 5845 states and 8761 transitions.
[2024-11-08 19:08:12,759 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:12,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 5845 states and 8761 transitions.
[2024-11-08 19:08:12,765 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2024-11-08 19:08:12,766 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:12,767 INFO  L215           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]
[2024-11-08 19:08:12,767 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-08 19:08:12,768 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:12,768 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:12,768 INFO  L85        PathProgramCache]: Analyzing trace with hash -705699164, now seen corresponding path program 1 times
[2024-11-08 19:08:12,769 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:12,769 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286940926]
[2024-11-08 19:08:12,769 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:12,769 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:08:12,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:13,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:13,355 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:08:13,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286940926]
[2024-11-08 19:08:13,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286940926] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:08:13,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:08:13,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:08:13,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285734056]
[2024-11-08 19:08:13,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:08:13,356 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:08:13,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:08:13,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:08:13,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:08:13,358 INFO  L87              Difference]: Start difference. First operand 5845 states and 8761 transitions. Second operand  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:13,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:08:13,721 INFO  L93              Difference]: Finished difference Result 16721 states and 25066 transitions.
[2024-11-08 19:08:13,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-08 19:08:13,722 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198
[2024-11-08 19:08:13,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:08:13,754 INFO  L225             Difference]: With dead ends: 16721
[2024-11-08 19:08:13,755 INFO  L226             Difference]: Without dead ends: 11054
[2024-11-08 19:08:13,763 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:08:13,765 INFO  L432           NwaCegarLoop]: 8749 mSDtfsCounter, 7889 mSDsluCounter, 25976 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7889 SdHoareTripleChecker+Valid, 34725 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 19:08:13,766 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7889 Valid, 34725 Invalid, 30 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 19:08:13,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11054 states.
[2024-11-08 19:08:13,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11054 to 6041.
[2024-11-08 19:08:13,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6041 states, 6040 states have (on average 1.4991721854304636) internal successors, (9055), 6040 states have internal predecessors, (9055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:13,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6041 states to 6041 states and 9055 transitions.
[2024-11-08 19:08:13,928 INFO  L78                 Accepts]: Start accepts. Automaton has 6041 states and 9055 transitions. Word has length 198
[2024-11-08 19:08:13,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:08:13,928 INFO  L471      AbstractCegarLoop]: Abstraction has 6041 states and 9055 transitions.
[2024-11-08 19:08:13,928 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:13,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 6041 states and 9055 transitions.
[2024-11-08 19:08:14,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3030
[2024-11-08 19:08:14,213 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:14,215 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 19:08:14,215 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-08 19:08:14,216 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:14,216 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:14,217 INFO  L85        PathProgramCache]: Analyzing trace with hash -1904264238, now seen corresponding path program 1 times
[2024-11-08 19:08:14,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:14,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508870847]
[2024-11-08 19:08:14,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:14,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:08:33,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:46,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:46,435 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:08:46,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508870847]
[2024-11-08 19:08:46,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508870847] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:08:46,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103361476]
[2024-11-08 19:08:46,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:46,437 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:08:46,437 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:08:46,439 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:08:46,443 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 19:08:50,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:08:50,465 INFO  L255         TraceCheckSpWp]: Trace formula consists of 12223 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 19:08:50,550 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:08:54,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:08:54,819 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 19:08:54,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [103361476] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:08:54,820 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 19:08:54,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14
[2024-11-08 19:08:54,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147768707]
[2024-11-08 19:08:54,821 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:08:54,824 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 19:08:54,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:08:54,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 19:08:54,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182
[2024-11-08 19:08:54,830 INFO  L87              Difference]: Start difference. First operand 6041 states and 9055 transitions. Second operand  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:55,825 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:08:55,825 INFO  L93              Difference]: Finished difference Result 16954 states and 25415 transitions.
[2024-11-08 19:08:55,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-08 19:08:55,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 0 states have call successors, (0), 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 3029
[2024-11-08 19:08:55,832 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:08:55,868 INFO  L225             Difference]: With dead ends: 16954
[2024-11-08 19:08:55,869 INFO  L226             Difference]: Without dead ends: 11287
[2024-11-08 19:08:55,875 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3039 GetRequests, 3024 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272
[2024-11-08 19:08:55,876 INFO  L432           NwaCegarLoop]: 16544 mSDtfsCounter, 11354 mSDsluCounter, 97820 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11354 SdHoareTripleChecker+Valid, 114364 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:08:55,877 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [11354 Valid, 114364 Invalid, 151 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 19:08:55,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11287 states.
[2024-11-08 19:08:56,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 6078.
[2024-11-08 19:08:56,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6078 states, 6077 states have (on average 1.4990949481652132) internal successors, (9110), 6077 states have internal predecessors, (9110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:56,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 9110 transitions.
[2024-11-08 19:08:56,035 INFO  L78                 Accepts]: Start accepts. Automaton has 6078 states and 9110 transitions. Word has length 3029
[2024-11-08 19:08:56,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:08:56,039 INFO  L471      AbstractCegarLoop]: Abstraction has 6078 states and 9110 transitions.
[2024-11-08 19:08:56,040 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 336.55555555555554) internal successors, (3029), 9 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:08:56,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 6078 states and 9110 transitions.
[2024-11-08 19:08:56,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3031
[2024-11-08 19:08:56,451 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:08:56,453 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:08:56,503 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 19:08:56,653 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:08:56,654 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:08:56,656 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:08:56,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 287176484, now seen corresponding path program 1 times
[2024-11-08 19:08:56,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:08:56,658 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936971328]
[2024-11-08 19:08:56,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:08:56,659 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:09:07,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:09:15,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:09:15,160 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:09:15,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936971328]
[2024-11-08 19:09:15,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936971328] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 19:09:15,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107157860]
[2024-11-08 19:09:15,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:09:15,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:09:15,163 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 19:09:15,166 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 19:09:15,168 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 19:09:23,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:09:23,323 INFO  L255         TraceCheckSpWp]: Trace formula consists of 12226 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 19:09:23,389 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 19:09:31,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:09:31,712 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 19:09:41,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:09:41,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107157860] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 19:09:41,365 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 19:09:41,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11
[2024-11-08 19:09:41,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650097815]
[2024-11-08 19:09:41,367 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 19:09:41,375 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 19:09:41,375 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:09:41,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 19:09:41,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-08 19:09:41,384 INFO  L87              Difference]: Start difference. First operand 6078 states and 9110 transitions. Second operand  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:09:49,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:09:49,901 INFO  L93              Difference]: Finished difference Result 27190 states and 40760 transitions.
[2024-11-08 19:09:49,902 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-08 19:09:49,903 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 0 states have call successors, (0), 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 3030
[2024-11-08 19:09:49,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:09:49,933 INFO  L225             Difference]: With dead ends: 27190
[2024-11-08 19:09:49,933 INFO  L226             Difference]: Without dead ends: 11746
[2024-11-08 19:09:49,944 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6065 GetRequests, 6056 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-08 19:09:49,945 INFO  L432           NwaCegarLoop]: 8388 mSDtfsCounter, 28398 mSDsluCounter, 62150 mSDsCounter, 0 mSdLazyCounter, 8014 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28398 SdHoareTripleChecker+Valid, 70538 SdHoareTripleChecker+Invalid, 8870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 8014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2024-11-08 19:09:49,945 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [28398 Valid, 70538 Invalid, 8870 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [856 Valid, 8014 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2024-11-08 19:09:49,958 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11746 states.
[2024-11-08 19:09:50,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 6272.
[2024-11-08 19:09:50,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6272 states, 6271 states have (on average 1.4989634826981342) internal successors, (9400), 6271 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:09:50,090 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 9400 transitions.
[2024-11-08 19:09:50,090 INFO  L78                 Accepts]: Start accepts. Automaton has 6272 states and 9400 transitions. Word has length 3030
[2024-11-08 19:09:50,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:09:50,091 INFO  L471      AbstractCegarLoop]: Abstraction has 6272 states and 9400 transitions.
[2024-11-08 19:09:50,093 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 540.6363636363636) internal successors, (5947), 11 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:09:50,093 INFO  L276                IsEmpty]: Start isEmpty. Operand 6272 states and 9400 transitions.
[2024-11-08 19:09:50,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3032
[2024-11-08 19:09:50,165 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:09:50,167 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:09:50,224 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 19:09:50,367 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eda7957-99eb-4889-869a-f6bd4b390607/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 19:09:50,368 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:09:50,368 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:09:50,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -888615356, now seen corresponding path program 1 times
[2024-11-08 19:09:50,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:09:50,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650023904]
[2024-11-08 19:09:50,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:09:50,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:10:04,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:10:10,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:10:10,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:10:10,848 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650023904]
[2024-11-08 19:10:10,848 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650023904] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:10:10,848 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:10:10,849 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:10:10,849 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936327054]
[2024-11-08 19:10:10,849 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:10:10,851 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:10:10,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:10:10,855 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:10:10,855 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:10:10,856 INFO  L87              Difference]: Start difference. First operand 6272 states and 9400 transitions. Second operand  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:15,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:10:15,103 INFO  L93              Difference]: Finished difference Result 16717 states and 25057 transitions.
[2024-11-08 19:10:15,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-08 19:10:15,104 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 0 states have call successors, (0), 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 3031
[2024-11-08 19:10:15,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:10:15,121 INFO  L225             Difference]: With dead ends: 16717
[2024-11-08 19:10:15,121 INFO  L226             Difference]: Without dead ends: 10817
[2024-11-08 19:10:15,126 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:10:15,127 INFO  L432           NwaCegarLoop]: 7035 mSDtfsCounter, 13915 mSDsluCounter, 20704 mSDsCounter, 0 mSdLazyCounter, 5744 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13915 SdHoareTripleChecker+Valid, 27739 SdHoareTripleChecker+Invalid, 5792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:10:15,128 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [13915 Valid, 27739 Invalid, 5792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 5744 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2024-11-08 19:10:15,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10817 states.
[2024-11-08 19:10:15,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10817 to 6294.
[2024-11-08 19:10:15,241 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6294 states, 6293 states have (on average 1.4983314794215796) internal successors, (9429), 6293 states have internal predecessors, (9429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:15,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9429 transitions.
[2024-11-08 19:10:15,250 INFO  L78                 Accepts]: Start accepts. Automaton has 6294 states and 9429 transitions. Word has length 3031
[2024-11-08 19:10:15,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:10:15,251 INFO  L471      AbstractCegarLoop]: Abstraction has 6294 states and 9429 transitions.
[2024-11-08 19:10:15,252 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 505.1666666666667) internal successors, (3031), 6 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:15,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 6294 states and 9429 transitions.
[2024-11-08 19:10:15,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3033
[2024-11-08 19:10:15,324 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:10:15,326 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:10:15,326 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-08 19:10:15,326 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:10:15,327 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:10:15,328 INFO  L85        PathProgramCache]: Analyzing trace with hash -1195410296, now seen corresponding path program 1 times
[2024-11-08 19:10:15,328 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:10:15,328 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701394880]
[2024-11-08 19:10:15,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:10:15,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:10:25,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:10:31,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:10:31,893 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:10:31,893 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701394880]
[2024-11-08 19:10:31,894 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701394880] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:10:31,894 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:10:31,894 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 19:10:31,894 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482426214]
[2024-11-08 19:10:31,895 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:10:31,898 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 19:10:31,899 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:10:31,902 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 19:10:31,902 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:10:31,904 INFO  L87              Difference]: Start difference. First operand 6294 states and 9429 transitions. Second operand  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:37,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:10:37,071 INFO  L93              Difference]: Finished difference Result 12194 states and 18273 transitions.
[2024-11-08 19:10:37,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-08 19:10:37,073 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 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 3032
[2024-11-08 19:10:37,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:10:37,085 INFO  L225             Difference]: With dead ends: 12194
[2024-11-08 19:10:37,085 INFO  L226             Difference]: Without dead ends: 6294
[2024-11-08 19:10:37,089 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 19:10:37,090 INFO  L432           NwaCegarLoop]: 6270 mSDtfsCounter, 7566 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 4985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7566 SdHoareTripleChecker+Valid, 12520 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:10:37,091 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7566 Valid, 12520 Invalid, 4986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4985 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2024-11-08 19:10:37,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6294 states.
[2024-11-08 19:10:37,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 6294.
[2024-11-08 19:10:37,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6294 states, 6293 states have (on average 1.4981725726998252) internal successors, (9428), 6293 states have internal predecessors, (9428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:37,187 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9428 transitions.
[2024-11-08 19:10:37,187 INFO  L78                 Accepts]: Start accepts. Automaton has 6294 states and 9428 transitions. Word has length 3032
[2024-11-08 19:10:37,190 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:10:37,190 INFO  L471      AbstractCegarLoop]: Abstraction has 6294 states and 9428 transitions.
[2024-11-08 19:10:37,191 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:37,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 6294 states and 9428 transitions.
[2024-11-08 19:10:37,264 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3034
[2024-11-08 19:10:37,264 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:10:37,266 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:10:37,266 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-08 19:10:37,267 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:10:37,267 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:10:37,268 INFO  L85        PathProgramCache]: Analyzing trace with hash 404253770, now seen corresponding path program 1 times
[2024-11-08 19:10:37,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:10:37,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813958031]
[2024-11-08 19:10:37,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:10:37,270 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:10:47,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:10:53,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:10:53,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:10:53,555 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813958031]
[2024-11-08 19:10:53,555 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813958031] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:10:53,555 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:10:53,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 19:10:53,556 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97554541]
[2024-11-08 19:10:53,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:10:53,559 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 19:10:53,559 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:10:53,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 19:10:53,562 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-08 19:10:53,564 INFO  L87              Difference]: Start difference. First operand 6294 states and 9428 transitions. Second operand  has 5 states, 5 states have (on average 606.6) internal successors, (3033), 5 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:59,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:10:59,515 INFO  L93              Difference]: Finished difference Result 12194 states and 18271 transitions.
[2024-11-08 19:10:59,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-08 19:10:59,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 606.6) internal successors, (3033), 5 states have internal predecessors, (3033), 0 states have call successors, (0), 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 3033
[2024-11-08 19:10:59,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:10:59,529 INFO  L225             Difference]: With dead ends: 12194
[2024-11-08 19:10:59,530 INFO  L226             Difference]: Without dead ends: 6294
[2024-11-08 19:10:59,536 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:10:59,537 INFO  L432           NwaCegarLoop]: 6259 mSDtfsCounter, 8489 mSDsluCounter, 11747 mSDsCounter, 0 mSdLazyCounter, 7262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8489 SdHoareTripleChecker+Valid, 18006 SdHoareTripleChecker+Invalid, 7263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2024-11-08 19:10:59,537 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8489 Valid, 18006 Invalid, 7263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7262 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2024-11-08 19:10:59,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6294 states.
[2024-11-08 19:10:59,624 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 6294.
[2024-11-08 19:10:59,632 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6294 states, 6293 states have (on average 1.498013665978071) internal successors, (9427), 6293 states have internal predecessors, (9427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:59,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 9427 transitions.
[2024-11-08 19:10:59,644 INFO  L78                 Accepts]: Start accepts. Automaton has 6294 states and 9427 transitions. Word has length 3033
[2024-11-08 19:10:59,645 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:10:59,647 INFO  L471      AbstractCegarLoop]: Abstraction has 6294 states and 9427 transitions.
[2024-11-08 19:10:59,648 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 606.6) internal successors, (3033), 5 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:10:59,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 6294 states and 9427 transitions.
[2024-11-08 19:10:59,721 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3035
[2024-11-08 19:10:59,721 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:10:59,723 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:10:59,724 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-08 19:10:59,724 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:10:59,724 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:10:59,725 INFO  L85        PathProgramCache]: Analyzing trace with hash -779653231, now seen corresponding path program 1 times
[2024-11-08 19:10:59,726 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:10:59,726 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707604104]
[2024-11-08 19:10:59,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:10:59,727 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:11:11,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:11:16,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:11:16,746 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:11:16,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707604104]
[2024-11-08 19:11:16,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707604104] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:11:16,747 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:11:16,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:11:16,747 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12935701]
[2024-11-08 19:11:16,747 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:11:16,750 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:11:16,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:11:16,752 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:11:16,752 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:11:16,753 INFO  L87              Difference]: Start difference. First operand 6294 states and 9427 transitions. Second operand  has 6 states, 6 states have (on average 505.6666666666667) internal successors, (3034), 6 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:11:20,802 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:24,818 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:28,826 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:32,841 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:36,855 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:40,870 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:48,614 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:52,620 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:56,627 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:11:57,307 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:11:57,308 INFO  L93              Difference]: Finished difference Result 17923 states and 26846 transitions.
[2024-11-08 19:11:57,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-08 19:11:57,309 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 505.6666666666667) internal successors, (3034), 6 states have internal predecessors, (3034), 0 states have call successors, (0), 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 3034
[2024-11-08 19:11:57,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:11:57,328 INFO  L225             Difference]: With dead ends: 17923
[2024-11-08 19:11:57,328 INFO  L226             Difference]: Without dead ends: 12023
[2024-11-08 19:11:57,335 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:11:57,336 INFO  L432           NwaCegarLoop]: 7137 mSDtfsCounter, 14198 mSDsluCounter, 22289 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 239 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14198 SdHoareTripleChecker+Valid, 29426 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time
[2024-11-08 19:11:57,337 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14198 Valid, 29426 Invalid, 5371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [239 Valid, 5123 Invalid, 9 Unknown, 0 Unchecked, 40.3s Time]
[2024-11-08 19:11:57,352 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12023 states.
[2024-11-08 19:11:57,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12023 to 6380.
[2024-11-08 19:11:57,467 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6380 states, 6379 states have (on average 1.4961592726132622) internal successors, (9544), 6379 states have internal predecessors, (9544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:11:57,477 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 9544 transitions.
[2024-11-08 19:11:57,478 INFO  L78                 Accepts]: Start accepts. Automaton has 6380 states and 9544 transitions. Word has length 3034
[2024-11-08 19:11:57,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:11:57,479 INFO  L471      AbstractCegarLoop]: Abstraction has 6380 states and 9544 transitions.
[2024-11-08 19:11:57,480 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 505.6666666666667) internal successors, (3034), 6 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:11:57,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 6380 states and 9544 transitions.
[2024-11-08 19:11:57,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3036
[2024-11-08 19:11:57,617 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:11:57,619 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:11:57,619 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-08 19:11:57,619 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:11:57,620 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:11:57,621 INFO  L85        PathProgramCache]: Analyzing trace with hash -1623018764, now seen corresponding path program 1 times
[2024-11-08 19:11:57,622 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:11:57,622 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254524058]
[2024-11-08 19:11:57,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:11:57,623 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:12:01,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:12:09,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:12:09,352 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:12:09,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254524058]
[2024-11-08 19:12:09,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254524058] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:12:09,352 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:12:09,352 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-08 19:12:09,352 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493257448]
[2024-11-08 19:12:09,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:12:09,354 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-08 19:12:09,355 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:12:09,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-08 19:12:09,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:12:09,358 INFO  L87              Difference]: Start difference. First operand 6380 states and 9544 transitions. Second operand  has 7 states, 7 states have (on average 433.57142857142856) internal successors, (3035), 7 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:18,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:12:18,728 INFO  L93              Difference]: Finished difference Result 12356 states and 18492 transitions.
[2024-11-08 19:12:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-08 19:12:18,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 433.57142857142856) internal successors, (3035), 7 states have internal predecessors, (3035), 0 states have call successors, (0), 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 3035
[2024-11-08 19:12:18,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:12:18,739 INFO  L225             Difference]: With dead ends: 12356
[2024-11-08 19:12:18,739 INFO  L226             Difference]: Without dead ends: 6394
[2024-11-08 19:12:18,745 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-08 19:12:18,746 INFO  L432           NwaCegarLoop]: 6263 mSDtfsCounter, 8755 mSDsluCounter, 25040 mSDsCounter, 0 mSdLazyCounter, 12458 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8755 SdHoareTripleChecker+Valid, 31303 SdHoareTripleChecker+Invalid, 12459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time
[2024-11-08 19:12:18,746 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8755 Valid, 31303 Invalid, 12459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12458 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time]
[2024-11-08 19:12:18,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6394 states.
[2024-11-08 19:12:18,826 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 6387.
[2024-11-08 19:12:18,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6387 states, 6386 states have (on average 1.4959285937989353) internal successors, (9553), 6386 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:18,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 9553 transitions.
[2024-11-08 19:12:18,846 INFO  L78                 Accepts]: Start accepts. Automaton has 6387 states and 9553 transitions. Word has length 3035
[2024-11-08 19:12:18,846 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:12:18,847 INFO  L471      AbstractCegarLoop]: Abstraction has 6387 states and 9553 transitions.
[2024-11-08 19:12:18,848 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 433.57142857142856) internal successors, (3035), 7 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:18,848 INFO  L276                IsEmpty]: Start isEmpty. Operand 6387 states and 9553 transitions.
[2024-11-08 19:12:18,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3036
[2024-11-08 19:12:18,921 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:12:18,923 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:12:18,923 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-08 19:12:18,924 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:12:18,924 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:12:18,925 INFO  L85        PathProgramCache]: Analyzing trace with hash -924513718, now seen corresponding path program 1 times
[2024-11-08 19:12:18,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:12:18,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436912083]
[2024-11-08 19:12:18,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:12:18,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:12:32,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:12:36,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:12:36,894 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:12:36,894 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436912083]
[2024-11-08 19:12:36,894 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436912083] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:12:36,894 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:12:36,895 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:12:36,895 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366628012]
[2024-11-08 19:12:36,895 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:12:36,897 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:12:36,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:12:36,901 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:12:36,901 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:12:36,902 INFO  L87              Difference]: Start difference. First operand 6387 states and 9553 transitions. Second operand  has 6 states, 6 states have (on average 505.8333333333333) internal successors, (3035), 6 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:41,543 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:12:45,549 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:12:52,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:12:52,212 INFO  L93              Difference]: Finished difference Result 18170 states and 27184 transitions.
[2024-11-08 19:12:52,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-08 19:12:52,215 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 505.8333333333333) internal successors, (3035), 6 states have internal predecessors, (3035), 0 states have call successors, (0), 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 3035
[2024-11-08 19:12:52,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:12:52,231 INFO  L225             Difference]: With dead ends: 18170
[2024-11-08 19:12:52,232 INFO  L226             Difference]: Without dead ends: 12201
[2024-11-08 19:12:52,236 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:12:52,237 INFO  L432           NwaCegarLoop]: 12775 mSDtfsCounter, 8277 mSDsluCounter, 34195 mSDsCounter, 0 mSdLazyCounter, 7622 mSolverCounterSat, 240 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8277 SdHoareTripleChecker+Valid, 46970 SdHoareTripleChecker+Invalid, 7864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 7622 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time
[2024-11-08 19:12:52,238 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8277 Valid, 46970 Invalid, 7864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [240 Valid, 7622 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time]
[2024-11-08 19:12:52,250 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12201 states.
[2024-11-08 19:12:52,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 6568.
[2024-11-08 19:12:52,350 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6568 states, 6567 states have (on average 1.492614588091975) internal successors, (9802), 6567 states have internal predecessors, (9802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:52,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 9802 transitions.
[2024-11-08 19:12:52,361 INFO  L78                 Accepts]: Start accepts. Automaton has 6568 states and 9802 transitions. Word has length 3035
[2024-11-08 19:12:52,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:12:52,362 INFO  L471      AbstractCegarLoop]: Abstraction has 6568 states and 9802 transitions.
[2024-11-08 19:12:52,362 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 505.8333333333333) internal successors, (3035), 6 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:12:52,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 6568 states and 9802 transitions.
[2024-11-08 19:12:52,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3037
[2024-11-08 19:12:52,443 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:12:52,445 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:12:52,446 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-11-08 19:12:52,446 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:12:52,447 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:12:52,448 INFO  L85        PathProgramCache]: Analyzing trace with hash -1352130440, now seen corresponding path program 1 times
[2024-11-08 19:12:52,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:12:52,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571821861]
[2024-11-08 19:12:52,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:12:52,449 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:12:57,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:13:06,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:13:06,818 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:13:06,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571821861]
[2024-11-08 19:13:06,819 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571821861] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:13:06,819 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:13:06,819 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-08 19:13:06,819 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660484922]
[2024-11-08 19:13:06,820 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:13:06,898 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 19:13:06,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:13:06,900 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 19:13:06,900 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2024-11-08 19:13:06,901 INFO  L87              Difference]: Start difference. First operand 6568 states and 9802 transitions. Second operand  has 8 states, 8 states have (on average 379.5) internal successors, (3036), 8 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:13:12,738 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:16,760 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:20,775 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:24,793 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:28,804 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:32,815 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:36,827 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:40,834 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:44,848 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:48,855 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:52,861 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:13:56,870 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:14:08,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:14:08,021 INFO  L93              Difference]: Finished difference Result 20457 states and 30568 transitions.
[2024-11-08 19:14:08,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-08 19:14:08,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 379.5) internal successors, (3036), 8 states have internal predecessors, (3036), 0 states have call successors, (0), 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 3036
[2024-11-08 19:14:08,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:14:08,036 INFO  L225             Difference]: With dead ends: 20457
[2024-11-08 19:14:08,036 INFO  L226             Difference]: Without dead ends: 14359
[2024-11-08 19:14:08,042 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2024-11-08 19:14:08,042 INFO  L432           NwaCegarLoop]: 6329 mSDtfsCounter, 25771 mSDsluCounter, 29310 mSDsCounter, 0 mSdLazyCounter, 14322 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25771 SdHoareTripleChecker+Valid, 35639 SdHoareTripleChecker+Invalid, 14335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14322 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:14:08,043 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [25771 Valid, 35639 Invalid, 14335 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 14322 Invalid, 12 Unknown, 0 Unchecked, 60.6s Time]
[2024-11-08 19:14:08,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14359 states.
[2024-11-08 19:14:08,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14359 to 10420.
[2024-11-08 19:14:08,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10420 states, 10419 states have (on average 1.4943852577022747) internal successors, (15570), 10419 states have internal predecessors, (15570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:14:08,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10420 states to 10420 states and 15570 transitions.
[2024-11-08 19:14:08,216 INFO  L78                 Accepts]: Start accepts. Automaton has 10420 states and 15570 transitions. Word has length 3036
[2024-11-08 19:14:08,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:14:08,218 INFO  L471      AbstractCegarLoop]: Abstraction has 10420 states and 15570 transitions.
[2024-11-08 19:14:08,219 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 379.5) internal successors, (3036), 8 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:14:08,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 10420 states and 15570 transitions.
[2024-11-08 19:14:08,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3037
[2024-11-08 19:14:08,299 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:14:08,301 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:14:08,301 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-11-08 19:14:08,302 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:14:08,302 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:14:08,303 INFO  L85        PathProgramCache]: Analyzing trace with hash -757200663, now seen corresponding path program 1 times
[2024-11-08 19:14:08,303 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:14:08,303 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651606149]
[2024-11-08 19:14:08,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:14:08,304 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:14:19,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:14:27,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:14:27,336 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:14:27,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651606149]
[2024-11-08 19:14:27,336 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651606149] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:14:27,336 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:14:27,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-08 19:14:27,337 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531166862]
[2024-11-08 19:14:27,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:14:27,339 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 19:14:27,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:14:27,342 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 19:14:27,343 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-11-08 19:14:27,344 INFO  L87              Difference]: Start difference. First operand 10420 states and 15570 transitions. Second operand  has 9 states, 9 states have (on average 337.3333333333333) internal successors, (3036), 9 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:14:40,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:14:40,648 INFO  L93              Difference]: Finished difference Result 37719 states and 56474 transitions.
[2024-11-08 19:14:40,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-08 19:14:40,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 337.3333333333333) internal successors, (3036), 9 states have internal predecessors, (3036), 0 states have call successors, (0), 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 3036
[2024-11-08 19:14:40,651 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:14:40,674 INFO  L225             Difference]: With dead ends: 37719
[2024-11-08 19:14:40,674 INFO  L226             Difference]: Without dead ends: 27796
[2024-11-08 19:14:40,687 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2024-11-08 19:14:40,687 INFO  L432           NwaCegarLoop]: 6264 mSDtfsCounter, 40904 mSDsluCounter, 36867 mSDsCounter, 0 mSdLazyCounter, 16841 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40904 SdHoareTripleChecker+Valid, 43131 SdHoareTripleChecker+Invalid, 16844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time
[2024-11-08 19:14:40,688 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [40904 Valid, 43131 Invalid, 16844 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 16841 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time]
[2024-11-08 19:14:40,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27796 states.
[2024-11-08 19:14:40,951 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27796 to 19137.
[2024-11-08 19:14:40,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19137 states, 19136 states have (on average 1.4966032608695652) internal successors, (28639), 19136 states have internal predecessors, (28639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:14:40,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19137 states to 19137 states and 28639 transitions.
[2024-11-08 19:14:40,994 INFO  L78                 Accepts]: Start accepts. Automaton has 19137 states and 28639 transitions. Word has length 3036
[2024-11-08 19:14:40,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:14:40,997 INFO  L471      AbstractCegarLoop]: Abstraction has 19137 states and 28639 transitions.
[2024-11-08 19:14:40,998 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 337.3333333333333) internal successors, (3036), 9 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:14:40,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 19137 states and 28639 transitions.
[2024-11-08 19:14:41,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3038
[2024-11-08 19:14:41,162 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:14:41,164 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:14:41,164 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-08 19:14:41,165 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:14:41,166 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:14:41,167 INFO  L85        PathProgramCache]: Analyzing trace with hash 856466111, now seen corresponding path program 1 times
[2024-11-08 19:14:41,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:14:41,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939516679]
[2024-11-08 19:14:41,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:14:41,168 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:14:56,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:15:01,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:15:01,865 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:15:01,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939516679]
[2024-11-08 19:15:01,865 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939516679] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:15:01,865 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:15:01,865 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:15:01,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264182486]
[2024-11-08 19:15:01,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:15:01,868 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:15:01,868 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:15:01,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:15:01,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:15:01,870 INFO  L87              Difference]: Start difference. First operand 19137 states and 28639 transitions. Second operand  has 6 states, 6 states have (on average 506.1666666666667) internal successors, (3037), 6 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:15:05,160 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:15:09,169 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:15:13,178 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:15:23,490 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 19:15:24,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 19:15:24,098 INFO  L93              Difference]: Finished difference Result 57751 states and 86449 transitions.
[2024-11-08 19:15:24,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-08 19:15:24,099 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 506.1666666666667) internal successors, (3037), 6 states have internal predecessors, (3037), 0 states have call successors, (0), 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 3037
[2024-11-08 19:15:24,099 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 19:15:24,122 INFO  L225             Difference]: With dead ends: 57751
[2024-11-08 19:15:24,122 INFO  L226             Difference]: Without dead ends: 39111
[2024-11-08 19:15:24,135 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:15:24,136 INFO  L432           NwaCegarLoop]: 7090 mSDtfsCounter, 8643 mSDsluCounter, 30711 mSDsCounter, 0 mSdLazyCounter, 8773 mSolverCounterSat, 263 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8643 SdHoareTripleChecker+Valid, 37801 SdHoareTripleChecker+Invalid, 9039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 8773 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time
[2024-11-08 19:15:24,136 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8643 Valid, 37801 Invalid, 9039 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [263 Valid, 8773 Invalid, 3 Unknown, 0 Unchecked, 21.7s Time]
[2024-11-08 19:15:24,158 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39111 states.
[2024-11-08 19:15:24,492 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39111 to 20093.
[2024-11-08 19:15:24,509 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20093 states, 20092 states have (on average 1.4938781604618754) internal successors, (30015), 20092 states have internal predecessors, (30015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:15:24,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 30015 transitions.
[2024-11-08 19:15:24,541 INFO  L78                 Accepts]: Start accepts. Automaton has 20093 states and 30015 transitions. Word has length 3037
[2024-11-08 19:15:24,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 19:15:24,542 INFO  L471      AbstractCegarLoop]: Abstraction has 20093 states and 30015 transitions.
[2024-11-08 19:15:24,543 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 506.1666666666667) internal successors, (3037), 6 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 19:15:24,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 20093 states and 30015 transitions.
[2024-11-08 19:15:24,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3039
[2024-11-08 19:15:24,626 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 19:15:24,627 INFO  L215           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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-08 19:15:24,627 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-08 19:15:24,627 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 19:15:24,628 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 19:15:24,629 INFO  L85        PathProgramCache]: Analyzing trace with hash 912453734, now seen corresponding path program 1 times
[2024-11-08 19:15:24,629 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 19:15:24,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634601881]
[2024-11-08 19:15:24,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 19:15:24,630 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 19:15:35,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 19:15:41,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 19:15:41,646 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 19:15:41,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634601881]
[2024-11-08 19:15:41,646 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634601881] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 19:15:41,646 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 19:15:41,646 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 19:15:41,647 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74256050]
[2024-11-08 19:15:41,647 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 19:15:41,649 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 19:15:41,652 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 19:15:41,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 19:15:41,656 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2024-11-08 19:15:41,657 INFO  L87              Difference]: Start difference. First operand 20093 states and 30015 transitions. Second operand  has 6 states, 6 states have (on average 506.3333333333333) internal successors, (3038), 6 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)