./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/transpose-u.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 3061b6dc
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/array-multidimensional/transpose-u.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 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m
[2024-11-18 09:16:28,980 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-18 09:16:29,052 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-18 09:16:29,060 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-18 09:16:29,061 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-18 09:16:29,087 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-18 09:16:29,088 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-18 09:16:29,089 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-18 09:16:29,089 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-18 09:16:29,091 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-18 09:16:29,091 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-18 09:16:29,091 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-18 09:16:29,092 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-18 09:16:29,092 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-18 09:16:29,093 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-18 09:16:29,094 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-18 09:16:29,095 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-18 09:16:29,095 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-18 09:16:29,095 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-18 09:16:29,095 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-18 09:16:29,095 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-18 09:16:29,099 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-18 09:16:29,099 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-18 09:16:29,099 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-18 09:16:29,100 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-18 09:16:29,100 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-18 09:16:29,100 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-18 09:16:29,100 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-18 09:16:29,100 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-18 09:16:29,101 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-18 09:16:29,101 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-18 09:16:29,101 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-18 09:16:29,101 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:16:29,101 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-18 09:16:29,101 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-18 09:16:29,102 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-18 09:16:29,102 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-18 09:16:29,102 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-18 09:16:29,104 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-18 09:16:29,104 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-18 09:16:29,104 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-18 09:16:29,105 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-18 09:16:29,105 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 -> 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508
[2024-11-18 09:16:29,427 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-18 09:16:29,454 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-18 09:16:29,458 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-18 09:16:29,459 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-18 09:16:29,460 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-18 09:16:29,461 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c
[2024-11-18 09:16:30,941 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-18 09:16:31,156 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-18 09:16:31,157 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c
[2024-11-18 09:16:31,166 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510af3b61/3534b9fbe19b4ecdb2e00320182b2f71/FLAGf255e6c9b
[2024-11-18 09:16:31,182 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510af3b61/3534b9fbe19b4ecdb2e00320182b2f71
[2024-11-18 09:16:31,185 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-18 09:16:31,187 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-18 09:16:31,190 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-18 09:16:31,190 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-18 09:16:31,196 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-18 09:16:31,196 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,197 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eb4aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31, skipping insertion in model container
[2024-11-18 09:16:31,197 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,232 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-18 09:16:31,449 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/array-multidimensional/transpose-u.c[315,328]
[2024-11-18 09:16:31,474 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:16:31,484 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-18 09:16:31,497 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/array-multidimensional/transpose-u.c[315,328]
[2024-11-18 09:16:31,509 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:16:31,530 INFO  L204         MainTranslator]: Completed translation
[2024-11-18 09:16:31,531 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31 WrapperNode
[2024-11-18 09:16:31,531 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-18 09:16:31,532 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-18 09:16:31,532 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-18 09:16:31,532 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-18 09:16:31,540 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,550 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,573 INFO  L138                Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88
[2024-11-18 09:16:31,574 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-18 09:16:31,575 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-18 09:16:31,575 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-18 09:16:31,575 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-18 09:16:31,585 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,585 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,587 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,606 INFO  L175           MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1].
[2024-11-18 09:16:31,606 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,607 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,614 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,618 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,620 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,625 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,627 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-18 09:16:31,628 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-18 09:16:31,629 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-18 09:16:31,629 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-18 09:16:31,630 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ...
[2024-11-18 09:16:31,636 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:16:31,647 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:16:31,664 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)
[2024-11-18 09:16:31,676 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
[2024-11-18 09:16:31,718 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-18 09:16:31,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-18 09:16:31,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-18 09:16:31,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-18 09:16:31,719 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-18 09:16:31,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-18 09:16:31,720 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-18 09:16:31,721 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-18 09:16:31,721 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-18 09:16:31,722 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-18 09:16:31,722 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-18 09:16:31,722 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-18 09:16:31,722 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-18 09:16:31,722 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-18 09:16:31,818 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-18 09:16:31,820 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-18 09:16:32,038 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-18 09:16:32,039 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-18 09:16:32,056 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-18 09:16:32,056 INFO  L316             CfgBuilder]: Removed 6 assume(true) statements.
[2024-11-18 09:16:32,057 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:32 BoogieIcfgContainer
[2024-11-18 09:16:32,057 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-18 09:16:32,059 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-18 09:16:32,059 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-18 09:16:32,062 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-18 09:16:32,062 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:16:31" (1/3) ...
[2024-11-18 09:16:32,063 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac59e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:32, skipping insertion in model container
[2024-11-18 09:16:32,064 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (2/3) ...
[2024-11-18 09:16:32,064 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac59e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:32, skipping insertion in model container
[2024-11-18 09:16:32,065 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:32" (3/3) ...
[2024-11-18 09:16:32,066 INFO  L112   eAbstractionObserver]: Analyzing ICFG transpose-u.c
[2024-11-18 09:16:32,084 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-18 09:16:32,085 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-18 09:16:32,149 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-18 09:16:32,157 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;@16bea4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-18 09:16:32,158 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-18 09:16:32,162 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-18 09:16:32,167 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:32,168 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:32,169 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:32,175 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:32,175 INFO  L85        PathProgramCache]: Analyzing trace with hash 74794164, now seen corresponding path program 1 times
[2024-11-18 09:16:32,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:32,184 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120956312]
[2024-11-18 09:16:32,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:16:32,185 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:32,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:16:32,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:16:32,485 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:32,485 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120956312]
[2024-11-18 09:16:32,485 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120956312] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:16:32,486 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:16:32,486 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:16:32,488 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725212931]
[2024-11-18 09:16:32,488 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:16:32,492 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:16:32,493 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:16:32,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:16:32,517 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:16:32,519 INFO  L87              Difference]: Start difference. First operand  has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:16:32,569 INFO  L93              Difference]: Finished difference Result 48 states and 76 transitions.
[2024-11-18 09:16:32,571 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:16:32,572 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10
[2024-11-18 09:16:32,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:16:32,579 INFO  L225             Difference]: With dead ends: 48
[2024-11-18 09:16:32,579 INFO  L226             Difference]: Without dead ends: 23
[2024-11-18 09:16:32,581 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:16:32,584 INFO  L432           NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:16:32,585 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 09:16:32,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2024-11-18 09:16:32,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20.
[2024-11-18 09:16:32,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,611 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions.
[2024-11-18 09:16:32,613 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10
[2024-11-18 09:16:32,613 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:16:32,613 INFO  L471      AbstractCegarLoop]: Abstraction has 20 states and 25 transitions.
[2024-11-18 09:16:32,613 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,614 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions.
[2024-11-18 09:16:32,614 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-18 09:16:32,614 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:32,615 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:32,615 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-18 09:16:32,615 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:32,616 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:32,616 INFO  L85        PathProgramCache]: Analyzing trace with hash 876166624, now seen corresponding path program 1 times
[2024-11-18 09:16:32,616 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:32,616 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156106567]
[2024-11-18 09:16:32,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:16:32,617 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:32,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:16:32,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:16:32,726 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:32,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156106567]
[2024-11-18 09:16:32,727 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156106567] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:16:32,727 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:16:32,727 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-18 09:16:32,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603905872]
[2024-11-18 09:16:32,727 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:16:32,728 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:16:32,728 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:16:32,729 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:16:32,729 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:16:32,730 INFO  L87              Difference]: Start difference. First operand 20 states and 25 transitions. Second operand  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,779 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:16:32,779 INFO  L93              Difference]: Finished difference Result 46 states and 59 transitions.
[2024-11-18 09:16:32,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:16:32,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13
[2024-11-18 09:16:32,780 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:16:32,780 INFO  L225             Difference]: With dead ends: 46
[2024-11-18 09:16:32,781 INFO  L226             Difference]: Without dead ends: 29
[2024-11-18 09:16:32,781 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:16:32,782 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:16:32,783 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 09:16:32,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2024-11-18 09:16:32,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23.
[2024-11-18 09:16:32,789 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions.
[2024-11-18 09:16:32,790 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13
[2024-11-18 09:16:32,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:16:32,790 INFO  L471      AbstractCegarLoop]: Abstraction has 23 states and 28 transitions.
[2024-11-18 09:16:32,790 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:32,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions.
[2024-11-18 09:16:32,791 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2024-11-18 09:16:32,794 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:32,794 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:32,794 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-18 09:16:32,795 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:32,795 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:32,799 INFO  L85        PathProgramCache]: Analyzing trace with hash -1798277150, now seen corresponding path program 1 times
[2024-11-18 09:16:32,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:32,800 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070764446]
[2024-11-18 09:16:32,800 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:16:32,800 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:32,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:16:32,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:16:32,930 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:32,930 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070764446]
[2024-11-18 09:16:32,931 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070764446] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:16:32,932 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:16:32,932 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-18 09:16:32,932 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506141357]
[2024-11-18 09:16:32,932 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:16:32,933 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:16:32,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:16:32,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:16:32,934 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:16:32,935 INFO  L87              Difference]: Start difference. First operand 23 states and 28 transitions. Second operand  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:16:33,018 INFO  L93              Difference]: Finished difference Result 50 states and 60 transitions.
[2024-11-18 09:16:33,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:16:33,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15
[2024-11-18 09:16:33,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:16:33,020 INFO  L225             Difference]: With dead ends: 50
[2024-11-18 09:16:33,022 INFO  L226             Difference]: Without dead ends: 40
[2024-11-18 09:16:33,022 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:16:33,024 INFO  L432           NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-18 09:16:33,025 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-18 09:16:33,026 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2024-11-18 09:16:33,033 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24.
[2024-11-18 09:16:33,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions.
[2024-11-18 09:16:33,034 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15
[2024-11-18 09:16:33,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:16:33,035 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 29 transitions.
[2024-11-18 09:16:33,035 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions.
[2024-11-18 09:16:33,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-11-18 09:16:33,036 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:33,036 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:33,036 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-18 09:16:33,037 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:33,037 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:33,038 INFO  L85        PathProgramCache]: Analyzing trace with hash -622296559, now seen corresponding path program 1 times
[2024-11-18 09:16:33,038 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:33,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453226413]
[2024-11-18 09:16:33,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:16:33,042 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:33,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:16:33,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:16:33,181 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:33,181 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453226413]
[2024-11-18 09:16:33,181 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453226413] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:16:33,181 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419299493]
[2024-11-18 09:16:33,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:16:33,182 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:16:33,182 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:16:33,185 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)
[2024-11-18 09:16:33,187 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-18 09:16:33,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:16:33,272 INFO  L255         TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-18 09:16:33,277 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:16:33,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:16:33,368 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-18 09:16:33,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:16:33,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419299493] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-18 09:16:33,417 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-18 09:16:33,417 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2024-11-18 09:16:33,417 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605229242]
[2024-11-18 09:16:33,417 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-18 09:16:33,418 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-18 09:16:33,418 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:16:33,423 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-18 09:16:33,423 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90
[2024-11-18 09:16:33,424 INFO  L87              Difference]: Start difference. First operand 24 states and 29 transitions. Second operand  has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:16:33,651 INFO  L93              Difference]: Finished difference Result 72 states and 91 transitions.
[2024-11-18 09:16:33,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-18 09:16:33,652 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 19
[2024-11-18 09:16:33,653 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:16:33,654 INFO  L225             Difference]: With dead ends: 72
[2024-11-18 09:16:33,654 INFO  L226             Difference]: Without dead ends: 51
[2024-11-18 09:16:33,655 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2024-11-18 09:16:33,658 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-18 09:16:33,658 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-18 09:16:33,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2024-11-18 09:16:33,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45.
[2024-11-18 09:16:33,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,669 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions.
[2024-11-18 09:16:33,669 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 19
[2024-11-18 09:16:33,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:16:33,670 INFO  L471      AbstractCegarLoop]: Abstraction has 45 states and 53 transitions.
[2024-11-18 09:16:33,670 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:33,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions.
[2024-11-18 09:16:33,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-18 09:16:33,671 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:33,671 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:33,689 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-18 09:16:33,872 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:16:33,872 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:33,873 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:33,873 INFO  L85        PathProgramCache]: Analyzing trace with hash 2013197213, now seen corresponding path program 2 times
[2024-11-18 09:16:33,873 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:33,873 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119877615]
[2024-11-18 09:16:33,874 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-18 09:16:33,874 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:33,908 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-18 09:16:33,912 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:16:33,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2024-11-18 09:16:33,998 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:33,998 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119877615]
[2024-11-18 09:16:33,998 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119877615] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:16:33,999 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630397022]
[2024-11-18 09:16:33,999 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-18 09:16:33,999 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:16:33,999 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:16:34,001 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)
[2024-11-18 09:16:34,006 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-18 09:16:34,100 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-18 09:16:34,101 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:16:34,102 INFO  L255         TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-18 09:16:34,104 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:16:34,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-11-18 09:16:34,235 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-18 09:16:34,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-11-18 09:16:34,337 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630397022] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-18 09:16:34,337 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-18 09:16:34,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16
[2024-11-18 09:16:34,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782481365]
[2024-11-18 09:16:34,338 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-18 09:16:34,338 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-18 09:16:34,338 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:16:34,339 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-18 09:16:34,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240
[2024-11-18 09:16:34,342 INFO  L87              Difference]: Start difference. First operand 45 states and 53 transitions. Second operand  has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:35,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:16:35,074 INFO  L93              Difference]: Finished difference Result 343 states and 418 transitions.
[2024-11-18 09:16:35,075 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. 
[2024-11-18 09:16:35,075 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28
[2024-11-18 09:16:35,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:16:35,077 INFO  L225             Difference]: With dead ends: 343
[2024-11-18 09:16:35,080 INFO  L226             Difference]: Without dead ends: 301
[2024-11-18 09:16:35,081 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722
[2024-11-18 09:16:35,082 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 644 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-18 09:16:35,084 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 65 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-18 09:16:35,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2024-11-18 09:16:35,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 123.
[2024-11-18 09:16:35,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 123 states, 122 states have (on average 1.139344262295082) internal successors, (139), 122 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:35,116 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions.
[2024-11-18 09:16:35,118 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 28
[2024-11-18 09:16:35,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:16:35,119 INFO  L471      AbstractCegarLoop]: Abstraction has 123 states and 139 transitions.
[2024-11-18 09:16:35,119 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:16:35,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions.
[2024-11-18 09:16:35,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2024-11-18 09:16:35,121 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:16:35,121 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:16:35,141 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-18 09:16:35,321 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:16:35,322 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:16:35,322 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:16:35,323 INFO  L85        PathProgramCache]: Analyzing trace with hash -662393900, now seen corresponding path program 3 times
[2024-11-18 09:16:35,323 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:16:35,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272503817]
[2024-11-18 09:16:35,323 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-18 09:16:35,323 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:16:35,506 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s)
[2024-11-18 09:16:35,507 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:16:35,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 660 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2024-11-18 09:16:35,863 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:16:35,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272503817]
[2024-11-18 09:16:35,863 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272503817] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:16:35,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345050545]
[2024-11-18 09:16:35,863 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-18 09:16:35,864 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:16:35,864 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:16:35,866 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)
[2024-11-18 09:16:35,867 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-18 09:16:45,613 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s)
[2024-11-18 09:16:45,613 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:16:45,630 INFO  L255         TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 90 conjuncts are in the unsatisfiable core
[2024-11-18 09:16:45,639 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:16:45,979 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 27 treesize of output 1
[2024-11-18 09:16:46,072 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 15 treesize of output 11
[2024-11-18 09:16:46,134 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,135 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,191 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,193 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,258 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,259 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,336 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,337 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,397 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,398 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,454 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,455 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,521 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,522 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,581 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,582 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,638 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:16:46,639 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2024-11-18 09:16:46,721 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:46,721 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 1 case distinctions, treesize of input 39 treesize of output 23
[2024-11-18 09:16:46,837 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:46,837 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:46,960 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:46,961 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,069 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,070 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,214 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,215 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,326 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,327 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,435 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,435 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,539 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,539 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,647 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,648 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:47,756 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:16:47,757 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 1 case distinctions, treesize of input 57 treesize of output 41
[2024-11-18 09:16:48,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 660 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2024-11-18 09:16:48,104 INFO  L311         TraceCheckSpWp]: Computing backward predicates...