./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version c7c6ca5d
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8
--- Real Ultimate output ---
This is Ultimate 0.2.5-?-c7c6ca5-m
[2024-11-08 15:24:54,308 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-08 15:24:54,369 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 15:24:54,376 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 15:24:54,377 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 15:24:54,400 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 15:24:54,400 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 15:24:54,401 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 15:24:54,401 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 15:24:54,402 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-08 15:24:54,402 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 15:24:54,402 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 15:24:54,403 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 15:24:54,405 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-08 15:24:54,405 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-08 15:24:54,405 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 15:24:54,406 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-08 15:24:54,406 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-08 15:24:54,406 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-08 15:24:54,406 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-08 15:24:54,406 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-08 15:24:54,410 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 15:24:54,410 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 15:24:54,410 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 15:24:54,410 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-08 15:24:54,411 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-08 15:24:54,411 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-08 15:24:54,411 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-08 15:24:54,411 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 15:24:54,411 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 15:24:54,412 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 15:24:54,412 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-08 15:24:54,413 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 15:24:54,413 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 15:24:54,413 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 15:24:54,413 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 15:24:54,414 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 15:24:54,414 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8
[2024-11-08 15:24:54,632 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 15:24:54,663 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 15:24:54,664 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 15:24:54,666 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-08 15:24:54,666 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-08 15:24:54,667 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c
[2024-11-08 15:24:55,979 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-08 15:24:56,126 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-08 15:24:56,127 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c
[2024-11-08 15:24:56,132 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126c2c7ab/be7730cf29d44f6cada838aaa05255b9/FLAG3ffa8f04c
[2024-11-08 15:24:56,142 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126c2c7ab/be7730cf29d44f6cada838aaa05255b9
[2024-11-08 15:24:56,144 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 15:24:56,145 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 15:24:56,147 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 15:24:56,147 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 15:24:56,154 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 15:24:56,154 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,155 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c39a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56, skipping insertion in model container
[2024-11-08 15:24:56,156 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,181 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-08 15:24:56,316 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068]
[2024-11-08 15:24:56,329 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 15:24:56,337 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-08 15:24:56,347 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068]
[2024-11-08 15:24:56,357 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 15:24:56,374 INFO  L204         MainTranslator]: Completed translation
[2024-11-08 15:24:56,375 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56 WrapperNode
[2024-11-08 15:24:56,375 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 15:24:56,376 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 15:24:56,376 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 15:24:56,376 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 15:24:56,382 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,394 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,409 INFO  L138                Inliner]: procedures = 16, calls = 66, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 85
[2024-11-08 15:24:56,409 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 15:24:56,410 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 15:24:56,410 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 15:24:56,410 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 15:24:56,418 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,418 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,420 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,442 INFO  L175           MemorySlicer]: Split 36 memory accesses to 8 slices as follows [2, 2, 6, 4, 3, 8, 5, 6]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 2, 1, 2, 2, 1].
[2024-11-08 15:24:56,442 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,442 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,447 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,453 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,457 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,458 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,461 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 15:24:56,465 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 15:24:56,465 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 15:24:56,465 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-08 15:24:56,465 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (1/1) ...
[2024-11-08 15:24:56,470 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 15:24:56,482 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 15:24:56,497 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 15:24:56,502 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 15:24:56,550 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2024-11-08 15:24:56,551 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#6
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#7
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2024-11-08 15:24:56,552 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#6
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#7
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0
[2024-11-08 15:24:56,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 15:24:56,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 15:24:56,553 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#6
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#7
[2024-11-08 15:24:56,554 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 15:24:56,554 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 15:24:56,555 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 15:24:56,630 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-08 15:24:56,632 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 15:24:56,803 INFO  L?                        ?]: Removed 8 outVars from TransFormulas that were not future-live.
[2024-11-08 15:24:56,803 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-08 15:24:56,812 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 15:24:56,812 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-08 15:24:56,813 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:24:56 BoogieIcfgContainer
[2024-11-08 15:24:56,813 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 15:24:56,814 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 15:24:56,815 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 15:24:56,817 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-08 15:24:56,817 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:24:56" (1/3) ...
[2024-11-08 15:24:56,818 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebde5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:24:56, skipping insertion in model container
[2024-11-08 15:24:56,818 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:56" (2/3) ...
[2024-11-08 15:24:56,818 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebde5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:24:56, skipping insertion in model container
[2024-11-08 15:24:56,841 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:24:56" (3/3) ...
[2024-11-08 15:24:56,843 INFO  L112   eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c
[2024-11-08 15:24:56,862 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 15:24:56,862 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 15:24:56,917 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 15:24:56,923 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;@76e4a86b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 15:24:56,923 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 15:24:56,926 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 15:24:56,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-11-08 15:24:56,931 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 15:24:56,932 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 15:24:56,932 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 15:24:56,936 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 15:24:56,936 INFO  L85        PathProgramCache]: Analyzing trace with hash -831245217, now seen corresponding path program 1 times
[2024-11-08 15:24:56,942 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 15:24:56,943 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861168887]
[2024-11-08 15:24:56,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:24:56,943 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 15:24:57,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 15:24:57,112 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348733141]
[2024-11-08 15:24:57,112 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:24:57,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 15:24:57,113 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 15:24:57,114 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 15:24:57,116 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 15:24:57,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 15:24:57,286 INFO  L255         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 77 conjuncts are in the unsatisfiable core
[2024-11-08 15:24:57,293 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 15:24:57,357 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17
[2024-11-08 15:24:57,364 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 15:24:57,396 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:24:57,415 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2024-11-08 15:24:57,431 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:24:57,659 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22
[2024-11-08 15:24:57,672 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23
[2024-11-08 15:24:57,681 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22
[2024-11-08 15:24:57,688 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-08 15:24:57,761 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 15:24:57,762 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 15:24:57,762 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 15:24:57,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861168887]
[2024-11-08 15:24:57,763 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 15:24:57,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348733141]
[2024-11-08 15:24:57,764 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [348733141] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 15:24:57,764 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 15:24:57,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-08 15:24:57,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603883976]
[2024-11-08 15:24:57,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 15:24:57,774 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 15:24:57,775 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 15:24:57,793 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 15:24:57,793 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-08 15:24:57,795 INFO  L87              Difference]: Start difference. First operand  has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 15:24:58,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 15:24:58,045 INFO  L93              Difference]: Finished difference Result 55 states and 70 transitions.
[2024-11-08 15:24:58,046 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-08 15:24:58,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2024-11-08 15:24:58,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 15:24:58,052 INFO  L225             Difference]: With dead ends: 55
[2024-11-08 15:24:58,052 INFO  L226             Difference]: Without dead ends: 31
[2024-11-08 15:24:58,057 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2024-11-08 15:24:58,063 INFO  L432           NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 15:24:58,063 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 15:24:58,094 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 15:24:58,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2024-11-08 15:24:58,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2024-11-08 15:24:58,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2024-11-08 15:24:58,120 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9
[2024-11-08 15:24:58,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 15:24:58,120 INFO  L471      AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2024-11-08 15:24:58,120 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 15:24:58,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2024-11-08 15:24:58,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-08 15:24:58,122 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 15:24:58,122 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 15:24:58,137 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-08 15:24:58,323 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-08 15:24:58,324 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 15:24:58,325 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 15:24:58,325 INFO  L85        PathProgramCache]: Analyzing trace with hash -958977162, now seen corresponding path program 1 times
[2024-11-08 15:24:58,325 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 15:24:58,326 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364345530]
[2024-11-08 15:24:58,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:24:58,326 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 15:24:58,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 15:24:58,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776256006]
[2024-11-08 15:24:58,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:24:58,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 15:24:58,440 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 15:24:58,441 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 15:24:58,448 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 15:24:59,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 15:24:59,171 INFO  L255         TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 152 conjuncts are in the unsatisfiable core
[2024-11-08 15:24:59,177 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 15:24:59,187 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2024-11-08 15:24:59,192 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17
[2024-11-08 15:24:59,200 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 15:24:59,208 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:24:59,214 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:24:59,583 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15
[2024-11-08 15:24:59,592 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27
[2024-11-08 15:24:59,713 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43
[2024-11-08 15:24:59,718 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2024-11-08 15:24:59,728 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24
[2024-11-08 15:24:59,734 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-08 15:24:59,739 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14
[2024-11-08 15:24:59,801 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 15:24:59,802 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 15:25:09,474 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 15:25:09,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364345530]
[2024-11-08 15:25:09,474 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 15:25:09,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776256006]
[2024-11-08 15:25:09,475 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776256006] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 15:25:09,475 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2024-11-08 15:25:09,475 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2024-11-08 15:25:09,475 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992563305]
[2024-11-08 15:25:09,475 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2024-11-08 15:25:09,475 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 15:25:09,476 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 15:25:09,479 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 15:25:09,480 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=285, Unknown=2, NotChecked=0, Total=342
[2024-11-08 15:25:09,480 INFO  L87              Difference]: Start difference. First operand 30 states and 33 transitions. Second operand  has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 15:25:10,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 15:25:10,128 INFO  L93              Difference]: Finished difference Result 54 states and 58 transitions.
[2024-11-08 15:25:10,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-08 15:25:10,129 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19
[2024-11-08 15:25:10,129 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 15:25:10,131 INFO  L225             Difference]: With dead ends: 54
[2024-11-08 15:25:10,131 INFO  L226             Difference]: Without dead ends: 50
[2024-11-08 15:25:10,131 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=98, Invalid=452, Unknown=2, NotChecked=0, Total=552
[2024-11-08 15:25:10,132 INFO  L432           NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-08 15:25:10,135 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 109 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-08 15:25:10,136 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2024-11-08 15:25:10,148 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48.
[2024-11-08 15:25:10,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9)
[2024-11-08 15:25:10,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions.
[2024-11-08 15:25:10,151 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19
[2024-11-08 15:25:10,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 15:25:10,151 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 53 transitions.
[2024-11-08 15:25:10,151 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-08 15:25:10,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions.
[2024-11-08 15:25:10,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-08 15:25:10,152 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 15:25:10,152 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 15:25:10,162 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-08 15:25:10,354 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-11-08 15:25:10,355 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 15:25:10,355 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 15:25:10,355 INFO  L85        PathProgramCache]: Analyzing trace with hash -1338289088, now seen corresponding path program 1 times
[2024-11-08 15:25:10,355 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 15:25:10,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341264716]
[2024-11-08 15:25:10,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:25:10,356 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 15:25:10,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 15:25:10,416 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463359118]
[2024-11-08 15:25:10,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:25:10,419 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 15:25:10,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 15:25:10,424 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 15:25:10,425 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 15:25:10,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 15:25:10,570 INFO  L255         TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 86 conjuncts are in the unsatisfiable core
[2024-11-08 15:25:10,573 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 15:25:10,583 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2024-11-08 15:25:10,588 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:25:10,591 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17
[2024-11-08 15:25:10,596 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:25:10,599 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:25:10,611 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 15:25:13,816 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 15:25:13,816 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78
[2024-11-08 15:25:13,832 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 15:25:13,833 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75
[2024-11-08 15:25:13,847 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38
[2024-11-08 15:25:13,861 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24
[2024-11-08 15:25:13,876 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 15:25:13,876 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54
[2024-11-08 15:25:22,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 15:25:22,873 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 15:25:37,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 15:25:37,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 15:25:37,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341264716]
[2024-11-08 15:25:37,511 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 15:25:37,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463359118]
[2024-11-08 15:25:37,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463359118] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 15:25:37,511 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 15:25:37,511 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21
[2024-11-08 15:25:37,511 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142227452]
[2024-11-08 15:25:37,511 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 15:25:37,512 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-11-08 15:25:37,512 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 15:25:37,512 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-11-08 15:25:37,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=352, Unknown=2, NotChecked=0, Total=420
[2024-11-08 15:25:37,513 INFO  L87              Difference]: Start difference. First operand 48 states and 53 transitions. Second operand  has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 15:25:42,250 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]
[2024-11-08 15:25:46,268 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]
[2024-11-08 15:25:47,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 15:25:47,258 INFO  L93              Difference]: Finished difference Result 60 states and 65 transitions.
[2024-11-08 15:25:47,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2024-11-08 15:25:47,258 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19
[2024-11-08 15:25:47,259 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 15:25:47,259 INFO  L225             Difference]: With dead ends: 60
[2024-11-08 15:25:47,259 INFO  L226             Difference]: Without dead ends: 42
[2024-11-08 15:25:47,260 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=164, Invalid=890, Unknown=2, NotChecked=0, Total=1056
[2024-11-08 15:25:47,260 INFO  L432           NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time
[2024-11-08 15:25:47,261 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 60 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time]
[2024-11-08 15:25:47,261 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-11-08 15:25:47,269 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2024-11-08 15:25:47,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9)
[2024-11-08 15:25:47,270 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions.
[2024-11-08 15:25:47,270 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19
[2024-11-08 15:25:47,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 15:25:47,270 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 46 transitions.
[2024-11-08 15:25:47,270 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-08 15:25:47,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions.
[2024-11-08 15:25:47,271 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 15:25:47,271 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 15:25:47,271 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1]
[2024-11-08 15:25:47,284 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-08 15:25:47,475 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 15:25:47,475 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 15:25:47,476 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 15:25:47,476 INFO  L85        PathProgramCache]: Analyzing trace with hash 901607885, now seen corresponding path program 2 times
[2024-11-08 15:25:47,476 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 15:25:47,476 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909605242]
[2024-11-08 15:25:47,476 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 15:25:47,476 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 15:25:47,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 15:25:47,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589958302]
[2024-11-08 15:25:47,569 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 15:25:47,569 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 15:25:47,569 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 15:25:47,570 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 15:25:47,572 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 15:25:50,037 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 15:25:50,037 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 15:25:50,047 WARN  L253         TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 211 conjuncts are in the unsatisfiable core
[2024-11-08 15:25:50,054 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 15:25:50,066 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11
[2024-11-08 15:25:50,072 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 15:25:50,081 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:25:50,084 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17
[2024-11-08 15:25:50,092 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 15:25:50,096 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-11-08 15:25:50,289 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3
[2024-11-08 15:25:50,296 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27
[2024-11-08 15:25:50,302 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15
[2024-11-08 15:26:02,774 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39
[2024-11-08 15:26:02,780 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21
[2024-11-08 15:26:14,964 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 53
[2024-11-08 15:26:14,972 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28
[2024-11-08 15:26:14,978 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18
[2024-11-08 15:26:14,987 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-08 15:26:14,994 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9
[2024-11-08 15:26:15,112 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 15:26:15,113 INFO  L311         TraceCheckSpWp]: Computing backward predicates...