./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/avg60-1.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 798a7b37
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/reducercommutativity/avg60-1.i -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 536af0e32effc3a2288f843fefca54fb0104ab1d17ed14d79ddc92c629dbee95
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-798a7b3-m
[2025-03-03 09:11:46,679 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-03 09:11:46,737 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-03-03 09:11:46,742 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-03 09:11:46,743 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-03 09:11:46,756 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-03 09:11:46,756 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-03 09:11:46,757 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-03 09:11:46,757 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-03 09:11:46,757 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-03 09:11:46,758 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-03 09:11:46,758 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-03 09:11:46,758 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-03 09:11:46,758 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-03 09:11:46,758 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-03 09:11:46,759 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-03 09:11:46,759 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-03 09:11:46,759 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 09:11:46,760 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-03 09:11:46,760 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-03 09:11:46,761 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 536af0e32effc3a2288f843fefca54fb0104ab1d17ed14d79ddc92c629dbee95
[2025-03-03 09:11:46,953 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-03 09:11:46,961 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-03 09:11:46,963 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-03 09:11:46,964 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-03 09:11:46,964 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-03 09:11:46,965 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg60-1.i
[2025-03-03 09:11:48,047 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa8eec12/62b520a04bff47169d74b857e55be027/FLAGedff1c17c
[2025-03-03 09:11:48,254 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-03 09:11:48,256 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg60-1.i
[2025-03-03 09:11:48,270 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa8eec12/62b520a04bff47169d74b857e55be027/FLAGedff1c17c
[2025-03-03 09:11:48,618 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa8eec12/62b520a04bff47169d74b857e55be027
[2025-03-03 09:11:48,620 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-03 09:11:48,621 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-03 09:11:48,622 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-03 09:11:48,622 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-03 09:11:48,624 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-03 09:11:48,625 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,625 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737d1bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48, skipping insertion in model container
[2025-03-03 09:11:48,625 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,634 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-03 09:11:48,731 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/reducercommutativity/avg60-1.i[1282,1295]
[2025-03-03 09:11:48,734 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 09:11:48,740 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-03 09:11:48,754 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/reducercommutativity/avg60-1.i[1282,1295]
[2025-03-03 09:11:48,758 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 09:11:48,768 INFO  L204         MainTranslator]: Completed translation
[2025-03-03 09:11:48,770 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48 WrapperNode
[2025-03-03 09:11:48,770 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-03 09:11:48,772 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-03 09:11:48,772 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-03 09:11:48,772 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-03 09:11:48,777 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,783 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,794 INFO  L138                Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63
[2025-03-03 09:11:48,795 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-03 09:11:48,796 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-03 09:11:48,796 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-03 09:11:48,796 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-03 09:11:48,801 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,801 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,806 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,814 INFO  L175           MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5].
[2025-03-03 09:11:48,814 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,814 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,821 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,821 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,822 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,822 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,823 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-03 09:11:48,824 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-03 09:11:48,824 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-03 09:11:48,824 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-03 09:11:48,828 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (1/1) ...
[2025-03-03 09:11:48,832 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 09:11:48,843 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:48,853 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)
[2025-03-03 09:11:48,855 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
[2025-03-03 09:11:48,875 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2025-03-03 09:11:48,876 INFO  L130     BoogieDeclarations]: Found specification of procedure avg
[2025-03-03 09:11:48,876 INFO  L138     BoogieDeclarations]: Found implementation of procedure avg
[2025-03-03 09:11:48,877 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-03 09:11:48,877 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-03 09:11:48,877 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2025-03-03 09:11:48,877 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2025-03-03 09:11:48,877 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2025-03-03 09:11:48,938 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-03 09:11:48,940 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-03 09:11:49,044 INFO  L1325  $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;
[2025-03-03 09:11:49,051 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2025-03-03 09:11:49,051 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-03 09:11:49,057 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-03 09:11:49,057 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2025-03-03 09:11:49,057 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:11:49 BoogieIcfgContainer
[2025-03-03 09:11:49,058 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-03 09:11:49,059 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-03 09:11:49,059 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-03 09:11:49,063 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-03 09:11:49,063 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:11:48" (1/3) ...
[2025-03-03 09:11:49,064 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7610a614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:11:49, skipping insertion in model container
[2025-03-03 09:11:49,064 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:11:48" (2/3) ...
[2025-03-03 09:11:49,064 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7610a614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:11:49, skipping insertion in model container
[2025-03-03 09:11:49,065 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:11:49" (3/3) ...
[2025-03-03 09:11:49,065 INFO  L128   eAbstractionObserver]: Analyzing ICFG avg60-1.i
[2025-03-03 09:11:49,077 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-03 09:11:49,079 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG avg60-1.i that has 2 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations.
[2025-03-03 09:11:49,118 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-03 09:11:49,126 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;@2fdd652b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-03 09:11:49,126 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-03 09:11:49,129 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:49,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2025-03-03 09:11:49,133 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:49,133 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:49,133 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:49,136 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:49,137 INFO  L85        PathProgramCache]: Analyzing trace with hash 1926114205, now seen corresponding path program 1 times
[2025-03-03 09:11:49,142 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:49,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144775574]
[2025-03-03 09:11:49,142 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:49,143 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:49,205 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-03-03 09:11:49,218 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-03-03 09:11:49,219 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:49,219 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:49,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2025-03-03 09:11:49,350 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:49,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144775574]
[2025-03-03 09:11:49,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144775574] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-03 09:11:49,350 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-03 09:11:49,350 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2025-03-03 09:11:49,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453279682]
[2025-03-03 09:11:49,352 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-03 09:11:49,354 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2025-03-03 09:11:49,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:49,365 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2025-03-03 09:11:49,365 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2025-03-03 09:11:49,367 INFO  L87              Difference]: Start difference. First operand  has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:49,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:49,396 INFO  L93              Difference]: Finished difference Result 40 states and 50 transitions.
[2025-03-03 09:11:49,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-03-03 09:11:49,399 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2025-03-03 09:11:49,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:49,403 INFO  L225             Difference]: With dead ends: 40
[2025-03-03 09:11:49,403 INFO  L226             Difference]: Without dead ends: 18
[2025-03-03 09:11:49,405 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2025-03-03 09:11:49,407 INFO  L435           NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:49,409 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:49,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2025-03-03 09:11:49,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2025-03-03 09:11:49,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:49,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions.
[2025-03-03 09:11:49,434 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24
[2025-03-03 09:11:49,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:49,434 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 22 transitions.
[2025-03-03 09:11:49,435 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:49,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions.
[2025-03-03 09:11:49,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2025-03-03 09:11:49,437 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:49,437 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:49,437 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-03-03 09:11:49,438 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:49,438 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:49,438 INFO  L85        PathProgramCache]: Analyzing trace with hash -1969556302, now seen corresponding path program 1 times
[2025-03-03 09:11:49,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:49,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784424558]
[2025-03-03 09:11:49,439 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:49,439 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:49,456 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes.
[2025-03-03 09:11:49,464 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements.
[2025-03-03 09:11:49,468 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:49,468 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:49,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2025-03-03 09:11:49,543 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:49,543 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784424558]
[2025-03-03 09:11:49,543 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784424558] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:49,544 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174742632]
[2025-03-03 09:11:49,544 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:49,544 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:49,544 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:49,546 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)
[2025-03-03 09:11:49,547 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-03-03 09:11:49,590 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes.
[2025-03-03 09:11:49,613 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements.
[2025-03-03 09:11:49,613 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:49,613 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:49,615 INFO  L256         TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:49,620 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:49,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2025-03-03 09:11:49,641 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-03 09:11:49,641 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [174742632] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-03 09:11:49,641 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-03 09:11:49,642 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2025-03-03 09:11:49,642 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843942171]
[2025-03-03 09:11:49,642 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-03 09:11:49,643 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2025-03-03 09:11:49,643 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:49,644 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2025-03-03 09:11:49,644 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2025-03-03 09:11:49,644 INFO  L87              Difference]: Start difference. First operand 18 states and 22 transitions. Second operand  has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2025-03-03 09:11:49,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:49,654 INFO  L93              Difference]: Finished difference Result 32 states and 42 transitions.
[2025-03-03 09:11:49,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-03-03 09:11:49,654 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25
[2025-03-03 09:11:49,655 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:49,655 INFO  L225             Difference]: With dead ends: 32
[2025-03-03 09:11:49,655 INFO  L226             Difference]: Without dead ends: 19
[2025-03-03 09:11:49,655 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2025-03-03 09:11:49,656 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:49,656 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:49,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2025-03-03 09:11:49,661 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2025-03-03 09:11:49,661 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:49,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2025-03-03 09:11:49,662 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25
[2025-03-03 09:11:49,662 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:49,662 INFO  L471      AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2025-03-03 09:11:49,662 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2025-03-03 09:11:49,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2025-03-03 09:11:49,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2025-03-03 09:11:49,663 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:49,663 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:49,669 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-03-03 09:11:49,863 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:49,863 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:49,864 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:49,864 INFO  L85        PathProgramCache]: Analyzing trace with hash -375679269, now seen corresponding path program 1 times
[2025-03-03 09:11:49,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:49,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203596845]
[2025-03-03 09:11:49,864 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:49,864 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:49,896 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes.
[2025-03-03 09:11:49,899 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements.
[2025-03-03 09:11:49,899 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:49,899 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:49,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2025-03-03 09:11:49,979 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:49,979 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203596845]
[2025-03-03 09:11:49,979 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203596845] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:49,979 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419905731]
[2025-03-03 09:11:49,979 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:49,979 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:49,979 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:49,981 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)
[2025-03-03 09:11:49,983 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-03-03 09:11:50,021 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes.
[2025-03-03 09:11:50,051 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements.
[2025-03-03 09:11:50,051 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:50,051 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:50,054 INFO  L256         TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:50,055 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:50,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2025-03-03 09:11:50,067 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-03 09:11:50,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [419905731] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-03 09:11:50,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-03 09:11:50,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2025-03-03 09:11:50,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163461210]
[2025-03-03 09:11:50,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-03 09:11:50,068 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2025-03-03 09:11:50,068 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:50,068 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2025-03-03 09:11:50,068 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2025-03-03 09:11:50,069 INFO  L87              Difference]: Start difference. First operand 19 states and 23 transitions. Second operand  has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2025-03-03 09:11:50,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:50,078 INFO  L93              Difference]: Finished difference Result 30 states and 35 transitions.
[2025-03-03 09:11:50,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-03-03 09:11:50,079 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28
[2025-03-03 09:11:50,080 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:50,080 INFO  L225             Difference]: With dead ends: 30
[2025-03-03 09:11:50,080 INFO  L226             Difference]: Without dead ends: 20
[2025-03-03 09:11:50,080 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2025-03-03 09:11:50,081 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:50,081 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:50,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2025-03-03 09:11:50,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2025-03-03 09:11:50,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:50,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2025-03-03 09:11:50,085 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 28
[2025-03-03 09:11:50,086 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:50,086 INFO  L471      AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2025-03-03 09:11:50,086 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2025-03-03 09:11:50,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2025-03-03 09:11:50,086 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2025-03-03 09:11:50,086 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:50,086 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:50,097 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2025-03-03 09:11:50,287 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,SelfDestructingSolverStorable2
[2025-03-03 09:11:50,287 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:50,287 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:50,287 INFO  L85        PathProgramCache]: Analyzing trace with hash 1210399376, now seen corresponding path program 1 times
[2025-03-03 09:11:50,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:50,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791798306]
[2025-03-03 09:11:50,288 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:50,288 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:50,298 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes.
[2025-03-03 09:11:50,306 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements.
[2025-03-03 09:11:50,306 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:50,306 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:50,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2025-03-03 09:11:50,372 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:50,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791798306]
[2025-03-03 09:11:50,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791798306] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:50,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587762245]
[2025-03-03 09:11:50,372 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 09:11:50,373 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:50,373 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:50,375 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)
[2025-03-03 09:11:50,377 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-03-03 09:11:50,423 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes.
[2025-03-03 09:11:50,450 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements.
[2025-03-03 09:11:50,450 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:50,450 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:50,451 INFO  L256         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:50,452 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:50,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2025-03-03 09:11:50,477 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:50,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2025-03-03 09:11:50,510 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [587762245] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:50,510 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:50,510 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2025-03-03 09:11:50,510 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432785448]
[2025-03-03 09:11:50,510 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:50,510 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-03-03 09:11:50,510 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:50,511 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-03-03 09:11:50,511 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2025-03-03 09:11:50,511 INFO  L87              Difference]: Start difference. First operand 20 states and 24 transitions. Second operand  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:50,522 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:50,522 INFO  L93              Difference]: Finished difference Result 39 states and 49 transitions.
[2025-03-03 09:11:50,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-03 09:11:50,523 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 29
[2025-03-03 09:11:50,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:50,523 INFO  L225             Difference]: With dead ends: 39
[2025-03-03 09:11:50,523 INFO  L226             Difference]: Without dead ends: 23
[2025-03-03 09:11:50,524 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2025-03-03 09:11:50,524 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:50,524 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:50,524 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2025-03-03 09:11:50,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2025-03-03 09:11:50,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:50,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2025-03-03 09:11:50,526 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29
[2025-03-03 09:11:50,526 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:50,527 INFO  L471      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2025-03-03 09:11:50,527 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:50,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2025-03-03 09:11:50,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2025-03-03 09:11:50,527 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:50,527 INFO  L218           NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:50,537 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2025-03-03 09:11:50,730 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:50,731 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:50,731 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:50,731 INFO  L85        PathProgramCache]: Analyzing trace with hash -1738505925, now seen corresponding path program 2 times
[2025-03-03 09:11:50,731 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:50,731 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666638089]
[2025-03-03 09:11:50,731 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-03 09:11:50,731 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:50,747 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes.
[2025-03-03 09:11:50,770 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements.
[2025-03-03 09:11:50,770 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-03 09:11:50,770 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:50,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2025-03-03 09:11:50,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:50,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666638089]
[2025-03-03 09:11:50,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666638089] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:50,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042719434]
[2025-03-03 09:11:50,841 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-03 09:11:50,841 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:50,841 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:50,844 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)
[2025-03-03 09:11:50,845 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2025-03-03 09:11:50,884 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes.
[2025-03-03 09:11:50,907 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements.
[2025-03-03 09:11:50,908 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-03 09:11:50,908 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:50,909 INFO  L256         TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:50,910 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:50,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2025-03-03 09:11:50,968 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:51,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2025-03-03 09:11:51,032 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042719434] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:51,032 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:51,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14
[2025-03-03 09:11:51,032 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991639297]
[2025-03-03 09:11:51,033 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:51,033 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2025-03-03 09:11:51,033 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:51,033 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2025-03-03 09:11:51,034 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2025-03-03 09:11:51,034 INFO  L87              Difference]: Start difference. First operand 23 states and 27 transitions. Second operand  has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7)
[2025-03-03 09:11:51,059 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:51,059 INFO  L93              Difference]: Finished difference Result 46 states and 63 transitions.
[2025-03-03 09:11:51,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2025-03-03 09:11:51,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 32
[2025-03-03 09:11:51,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:51,060 INFO  L225             Difference]: With dead ends: 46
[2025-03-03 09:11:51,060 INFO  L226             Difference]: Without dead ends: 30
[2025-03-03 09:11:51,061 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2025-03-03 09:11:51,061 INFO  L435           NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:51,061 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:51,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2025-03-03 09:11:51,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2025-03-03 09:11:51,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:51,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2025-03-03 09:11:51,066 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 32
[2025-03-03 09:11:51,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:51,066 INFO  L471      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2025-03-03 09:11:51,066 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7)
[2025-03-03 09:11:51,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2025-03-03 09:11:51,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2025-03-03 09:11:51,067 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:51,067 INFO  L218           NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:51,074 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2025-03-03 09:11:51,267 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:51,268 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:51,268 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:51,268 INFO  L85        PathProgramCache]: Analyzing trace with hash 2102730442, now seen corresponding path program 3 times
[2025-03-03 09:11:51,268 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:51,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082419790]
[2025-03-03 09:11:51,268 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-03-03 09:11:51,268 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:51,279 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes.
[2025-03-03 09:11:51,286 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements.
[2025-03-03 09:11:51,286 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2025-03-03 09:11:51,286 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:51,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2025-03-03 09:11:51,323 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:51,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082419790]
[2025-03-03 09:11:51,323 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082419790] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:51,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171948075]
[2025-03-03 09:11:51,323 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-03-03 09:11:51,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:51,323 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:51,325 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:51,326 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2025-03-03 09:11:51,376 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes.
[2025-03-03 09:11:51,390 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 41 statements.
[2025-03-03 09:11:51,391 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2025-03-03 09:11:51,391 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:51,391 INFO  L256         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:51,392 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:51,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2025-03-03 09:11:51,406 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:51,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked.
[2025-03-03 09:11:51,441 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171948075] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:51,441 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:51,441 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9
[2025-03-03 09:11:51,441 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353457573]
[2025-03-03 09:11:51,441 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:51,442 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2025-03-03 09:11:51,442 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:51,442 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2025-03-03 09:11:51,442 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2025-03-03 09:11:51,442 INFO  L87              Difference]: Start difference. First operand 30 states and 34 transitions. Second operand  has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:51,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:51,455 INFO  L93              Difference]: Finished difference Result 50 states and 63 transitions.
[2025-03-03 09:11:51,455 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-03-03 09:11:51,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41
[2025-03-03 09:11:51,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:51,455 INFO  L225             Difference]: With dead ends: 50
[2025-03-03 09:11:51,456 INFO  L226             Difference]: Without dead ends: 34
[2025-03-03 09:11:51,456 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2025-03-03 09:11:51,456 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:51,457 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:51,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2025-03-03 09:11:51,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2025-03-03 09:11:51,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:51,461 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions.
[2025-03-03 09:11:51,461 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 41
[2025-03-03 09:11:51,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:51,461 INFO  L471      AbstractCegarLoop]: Abstraction has 34 states and 38 transitions.
[2025-03-03 09:11:51,461 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:51,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions.
[2025-03-03 09:11:51,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2025-03-03 09:11:51,462 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:51,462 INFO  L218           NwaCegarLoop]: trace histogram [18, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:51,468 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2025-03-03 09:11:51,662 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:51,662 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:51,663 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:51,663 INFO  L85        PathProgramCache]: Analyzing trace with hash 1775178890, now seen corresponding path program 4 times
[2025-03-03 09:11:51,663 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:51,663 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184668121]
[2025-03-03 09:11:51,663 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-03-03 09:11:51,663 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:51,678 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes.
[2025-03-03 09:11:51,690 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements.
[2025-03-03 09:11:51,690 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-03-03 09:11:51,690 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:51,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2025-03-03 09:11:51,940 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:51,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184668121]
[2025-03-03 09:11:51,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184668121] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:51,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613663454]
[2025-03-03 09:11:51,940 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-03-03 09:11:51,940 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:51,940 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:51,943 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:51,944 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2025-03-03 09:11:51,996 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes.
[2025-03-03 09:11:52,029 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements.
[2025-03-03 09:11:52,029 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-03-03 09:11:52,029 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:52,033 INFO  L256         TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:52,034 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:52,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2025-03-03 09:11:52,066 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:52,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2025-03-03 09:11:52,253 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [613663454] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:52,253 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:52,253 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25
[2025-03-03 09:11:52,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352297521]
[2025-03-03 09:11:52,253 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:52,254 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2025-03-03 09:11:52,254 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:52,254 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2025-03-03 09:11:52,255 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600
[2025-03-03 09:11:52,255 INFO  L87              Difference]: Start difference. First operand 34 states and 38 transitions. Second operand  has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:52,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:52,292 INFO  L93              Difference]: Finished difference Result 67 states and 86 transitions.
[2025-03-03 09:11:52,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2025-03-03 09:11:52,292 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53
[2025-03-03 09:11:52,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:52,293 INFO  L225             Difference]: With dead ends: 67
[2025-03-03 09:11:52,293 INFO  L226             Difference]: Without dead ends: 46
[2025-03-03 09:11:52,295 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600
[2025-03-03 09:11:52,295 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:52,295 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:52,296 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2025-03-03 09:11:52,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2025-03-03 09:11:52,300 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:52,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions.
[2025-03-03 09:11:52,301 INFO  L78                 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 53
[2025-03-03 09:11:52,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:52,301 INFO  L471      AbstractCegarLoop]: Abstraction has 46 states and 50 transitions.
[2025-03-03 09:11:52,301 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:52,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions.
[2025-03-03 09:11:52,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-03-03 09:11:52,304 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:52,304 INFO  L218           NwaCegarLoop]: trace histogram [22, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:52,310 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2025-03-03 09:11:52,509 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:52,509 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:52,509 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:52,509 INFO  L85        PathProgramCache]: Analyzing trace with hash -585321270, now seen corresponding path program 5 times
[2025-03-03 09:11:52,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:52,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865293332]
[2025-03-03 09:11:52,509 INFO  L95    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2025-03-03 09:11:52,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:52,534 INFO  L108    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes.
[2025-03-03 09:11:52,634 INFO  L111    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements.
[2025-03-03 09:11:52,635 INFO  L114    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s)
[2025-03-03 09:11:52,635 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:52,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2025-03-03 09:11:52,688 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:52,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865293332]
[2025-03-03 09:11:52,688 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865293332] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:52,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77900601]
[2025-03-03 09:11:52,688 INFO  L95    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2025-03-03 09:11:52,688 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:52,689 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:52,690 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:52,692 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2025-03-03 09:11:52,752 INFO  L108    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 12 equivalence classes.
[2025-03-03 09:11:53,221 INFO  L111    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 54 of 65 statements.
[2025-03-03 09:11:53,221 INFO  L114    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s)
[2025-03-03 09:11:53,221 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:53,225 INFO  L256         TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:53,229 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:53,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 473 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2025-03-03 09:11:53,237 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:53,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2025-03-03 09:11:53,259 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [77900601] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:53,259 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:53,259 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6
[2025-03-03 09:11:53,259 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152511608]
[2025-03-03 09:11:53,259 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:53,260 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-03-03 09:11:53,260 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:53,260 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-03-03 09:11:53,260 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2025-03-03 09:11:53,260 INFO  L87              Difference]: Start difference. First operand 46 states and 50 transitions. Second operand  has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2025-03-03 09:11:53,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:53,271 INFO  L93              Difference]: Finished difference Result 64 states and 71 transitions.
[2025-03-03 09:11:53,272 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-03 09:11:53,272 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65
[2025-03-03 09:11:53,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:53,273 INFO  L225             Difference]: With dead ends: 64
[2025-03-03 09:11:53,273 INFO  L226             Difference]: Without dead ends: 49
[2025-03-03 09:11:53,273 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2025-03-03 09:11:53,273 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:53,273 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:53,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2025-03-03 09:11:53,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2025-03-03 09:11:53,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:53,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions.
[2025-03-03 09:11:53,278 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 65
[2025-03-03 09:11:53,278 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:53,278 INFO  L471      AbstractCegarLoop]: Abstraction has 49 states and 53 transitions.
[2025-03-03 09:11:53,278 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2025-03-03 09:11:53,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions.
[2025-03-03 09:11:53,278 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-03-03 09:11:53,278 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:53,279 INFO  L218           NwaCegarLoop]: trace histogram [22, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:53,286 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2025-03-03 09:11:53,479 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:53,479 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:53,480 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:53,480 INFO  L85        PathProgramCache]: Analyzing trace with hash 1385026717, now seen corresponding path program 6 times
[2025-03-03 09:11:53,480 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:53,480 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36136090]
[2025-03-03 09:11:53,480 INFO  L95    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2025-03-03 09:11:53,480 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:53,496 INFO  L108    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes.
[2025-03-03 09:11:53,573 INFO  L111    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements.
[2025-03-03 09:11:53,574 INFO  L114    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2025-03-03 09:11:53,574 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:53,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 482 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked.
[2025-03-03 09:11:53,682 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:53,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36136090]
[2025-03-03 09:11:53,682 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36136090] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:53,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230426820]
[2025-03-03 09:11:53,682 INFO  L95    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2025-03-03 09:11:53,682 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:53,683 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:53,684 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:53,686 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2025-03-03 09:11:53,746 INFO  L108    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 68 statements into 12 equivalence classes.
[2025-03-03 09:11:53,906 INFO  L111    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 44 of 68 statements.
[2025-03-03 09:11:53,906 INFO  L114    AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2025-03-03 09:11:53,906 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:53,907 INFO  L256         TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:53,909 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:53,951 INFO  L134       CoverageAnalysis]: Checked inductivity of 482 backedges. 104 proven. 10 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2025-03-03 09:11:53,952 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:54,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2025-03-03 09:11:54,031 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230426820] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:54,032 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:54,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19
[2025-03-03 09:11:54,032 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980525955]
[2025-03-03 09:11:54,032 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:54,032 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2025-03-03 09:11:54,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:54,033 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2025-03-03 09:11:54,033 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342
[2025-03-03 09:11:54,033 INFO  L87              Difference]: Start difference. First operand 49 states and 53 transitions. Second operand  has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2025-03-03 09:11:54,070 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:54,071 INFO  L93              Difference]: Finished difference Result 79 states and 95 transitions.
[2025-03-03 09:11:54,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2025-03-03 09:11:54,072 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68
[2025-03-03 09:11:54,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:54,072 INFO  L225             Difference]: With dead ends: 79
[2025-03-03 09:11:54,072 INFO  L226             Difference]: Without dead ends: 56
[2025-03-03 09:11:54,073 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342
[2025-03-03 09:11:54,073 INFO  L435           NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:54,073 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:54,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2025-03-03 09:11:54,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2025-03-03 09:11:54,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:54,077 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions.
[2025-03-03 09:11:54,077 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 68
[2025-03-03 09:11:54,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:54,078 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 60 transitions.
[2025-03-03 09:11:54,078 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2025-03-03 09:11:54,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions.
[2025-03-03 09:11:54,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2025-03-03 09:11:54,078 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:54,078 INFO  L218           NwaCegarLoop]: trace histogram [22, 21, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:54,086 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2025-03-03 09:11:54,279 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2025-03-03 09:11:54,279 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:54,279 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:54,279 INFO  L85        PathProgramCache]: Analyzing trace with hash 362877744, now seen corresponding path program 7 times
[2025-03-03 09:11:54,280 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:54,280 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31009715]
[2025-03-03 09:11:54,280 INFO  L95    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2025-03-03 09:11:54,280 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:54,297 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes.
[2025-03-03 09:11:54,339 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements.
[2025-03-03 09:11:54,339 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:54,339 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:54,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:54,912 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:54,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31009715]
[2025-03-03 09:11:54,912 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31009715] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:54,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102050677]
[2025-03-03 09:11:54,912 INFO  L95    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2025-03-03 09:11:54,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:54,913 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:54,914 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:54,916 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2025-03-03 09:11:54,992 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes.
[2025-03-03 09:11:55,046 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements.
[2025-03-03 09:11:55,046 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 09:11:55,046 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:55,048 INFO  L256         TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:55,050 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:55,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:55,098 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:55,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:55,798 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102050677] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:55,798 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:55,798 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49
[2025-03-03 09:11:55,798 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823068367]
[2025-03-03 09:11:55,799 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:55,800 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2025-03-03 09:11:55,800 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:55,801 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2025-03-03 09:11:55,802 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352
[2025-03-03 09:11:55,802 INFO  L87              Difference]: Start difference. First operand 56 states and 60 transitions. Second operand  has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:55,849 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:55,852 INFO  L93              Difference]: Finished difference Result 111 states and 142 transitions.
[2025-03-03 09:11:55,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. 
[2025-03-03 09:11:55,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77
[2025-03-03 09:11:55,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:55,853 INFO  L225             Difference]: With dead ends: 111
[2025-03-03 09:11:55,853 INFO  L226             Difference]: Without dead ends: 80
[2025-03-03 09:11:55,854 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352
[2025-03-03 09:11:55,855 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:55,855 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:55,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-03-03 09:11:55,860 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2025-03-03 09:11:55,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:55,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions.
[2025-03-03 09:11:55,861 INFO  L78                 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 77
[2025-03-03 09:11:55,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:55,861 INFO  L471      AbstractCegarLoop]: Abstraction has 80 states and 84 transitions.
[2025-03-03 09:11:55,861 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:55,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions.
[2025-03-03 09:11:55,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2025-03-03 09:11:55,864 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:55,864 INFO  L218           NwaCegarLoop]: trace histogram [46, 21, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:55,871 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2025-03-03 09:11:56,064 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2025-03-03 09:11:56,065 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:56,066 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:56,066 INFO  L85        PathProgramCache]: Analyzing trace with hash 1293185968, now seen corresponding path program 8 times
[2025-03-03 09:11:56,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:56,066 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247976472]
[2025-03-03 09:11:56,066 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-03 09:11:56,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:56,092 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 101 statements into 2 equivalence classes.
[2025-03-03 09:11:56,124 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 101 of 101 statements.
[2025-03-03 09:11:56,124 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-03 09:11:56,124 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:57,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:57,640 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:57,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247976472]
[2025-03-03 09:11:57,640 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247976472] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:57,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364692249]
[2025-03-03 09:11:57,641 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-03 09:11:57,641 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:57,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:57,643 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:57,645 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2025-03-03 09:11:57,737 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 101 statements into 2 equivalence classes.
[2025-03-03 09:11:57,803 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 101 of 101 statements.
[2025-03-03 09:11:57,804 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-03 09:11:57,804 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:57,808 INFO  L256         TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 48 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:57,810 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:57,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:57,892 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:59,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2025-03-03 09:11:59,121 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364692249] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:59,121 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:59,121 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 63
[2025-03-03 09:11:59,121 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193306609]
[2025-03-03 09:11:59,121 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:59,121 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 63 states
[2025-03-03 09:11:59,121 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:59,122 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants.
[2025-03-03 09:11:59,123 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906
[2025-03-03 09:11:59,123 INFO  L87              Difference]: Start difference. First operand 80 states and 84 transitions. Second operand  has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:59,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:59,182 INFO  L93              Difference]: Finished difference Result 125 states and 146 transitions.
[2025-03-03 09:11:59,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. 
[2025-03-03 09:11:59,183 INFO  L78                 Accepts]: Start accepts. Automaton has  has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 101
[2025-03-03 09:11:59,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:59,184 INFO  L225             Difference]: With dead ends: 125
[2025-03-03 09:11:59,184 INFO  L226             Difference]: Without dead ends: 94
[2025-03-03 09:11:59,185 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 154 SyntacticMatches, 34 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906
[2025-03-03 09:11:59,185 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:59,185 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:59,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2025-03-03 09:11:59,189 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2025-03-03 09:11:59,189 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:59,190 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions.
[2025-03-03 09:11:59,190 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 101
[2025-03-03 09:11:59,190 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:59,190 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 98 transitions.
[2025-03-03 09:11:59,190 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2025-03-03 09:11:59,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions.
[2025-03-03 09:11:59,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2025-03-03 09:11:59,191 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:59,191 INFO  L218           NwaCegarLoop]: trace histogram [60, 21, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:59,200 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2025-03-03 09:11:59,396 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2025-03-03 09:11:59,396 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:11:59,396 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:11:59,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 87205200, now seen corresponding path program 9 times
[2025-03-03 09:11:59,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:11:59,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53660826]
[2025-03-03 09:11:59,397 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-03-03 09:11:59,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:11:59,427 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 115 statements into 31 equivalence classes.
[2025-03-03 09:11:59,467 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 45 of 115 statements.
[2025-03-03 09:11:59,467 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2025-03-03 09:11:59,467 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:59,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 2170 backedges. 132 proven. 28 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked.
[2025-03-03 09:11:59,580 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:11:59,580 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53660826]
[2025-03-03 09:11:59,580 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53660826] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:11:59,580 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940475526]
[2025-03-03 09:11:59,581 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-03-03 09:11:59,581 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:11:59,581 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:11:59,582 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:11:59,584 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2025-03-03 09:11:59,698 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 115 statements into 31 equivalence classes.
[2025-03-03 09:11:59,745 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 45 of 115 statements.
[2025-03-03 09:11:59,745 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2025-03-03 09:11:59,745 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:11:59,747 INFO  L256         TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjuncts are in the unsatisfiable core
[2025-03-03 09:11:59,749 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:11:59,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 2170 backedges. 132 proven. 28 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked.
[2025-03-03 09:11:59,771 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:11:59,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 2170 backedges. 132 proven. 28 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked.
[2025-03-03 09:11:59,870 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [940475526] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:11:59,870 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:11:59,870 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19
[2025-03-03 09:11:59,870 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728114211]
[2025-03-03 09:11:59,870 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:11:59,871 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2025-03-03 09:11:59,871 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:11:59,871 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2025-03-03 09:11:59,871 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342
[2025-03-03 09:11:59,871 INFO  L87              Difference]: Start difference. First operand 94 states and 98 transitions. Second operand  has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:59,889 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:11:59,890 INFO  L93              Difference]: Finished difference Result 133 states and 151 transitions.
[2025-03-03 09:11:59,890 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2025-03-03 09:11:59,890 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 115
[2025-03-03 09:11:59,890 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:11:59,891 INFO  L225             Difference]: With dead ends: 133
[2025-03-03 09:11:59,891 INFO  L226             Difference]: Without dead ends: 103
[2025-03-03 09:11:59,891 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342
[2025-03-03 09:11:59,892 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:11:59,892 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:11:59,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2025-03-03 09:11:59,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2025-03-03 09:11:59,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:11:59,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions.
[2025-03-03 09:11:59,898 INFO  L78                 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 115
[2025-03-03 09:11:59,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:11:59,898 INFO  L471      AbstractCegarLoop]: Abstraction has 103 states and 107 transitions.
[2025-03-03 09:11:59,899 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2025-03-03 09:11:59,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions.
[2025-03-03 09:11:59,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2025-03-03 09:11:59,899 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:11:59,900 INFO  L218           NwaCegarLoop]: trace histogram [60, 48, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:11:59,906 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2025-03-03 09:12:00,100 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2025-03-03 09:12:00,100 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:12:00,101 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:12:00,101 INFO  L85        PathProgramCache]: Analyzing trace with hash 891515773, now seen corresponding path program 10 times
[2025-03-03 09:12:00,101 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:12:00,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948021954]
[2025-03-03 09:12:00,101 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-03-03 09:12:00,102 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:12:00,141 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 142 statements into 2 equivalence classes.
[2025-03-03 09:12:00,180 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 142 of 142 statements.
[2025-03-03 09:12:00,180 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-03-03 09:12:00,180 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:12:00,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 3169 backedges. 0 proven. 718 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked.
[2025-03-03 09:12:00,591 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:12:00,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948021954]
[2025-03-03 09:12:00,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948021954] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:12:00,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037040721]
[2025-03-03 09:12:00,591 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-03-03 09:12:00,591 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:12:00,591 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:12:00,595 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:12:00,597 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2025-03-03 09:12:00,723 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 142 statements into 2 equivalence classes.
[2025-03-03 09:12:00,809 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 142 of 142 statements.
[2025-03-03 09:12:00,810 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-03-03 09:12:00,810 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:12:00,814 INFO  L256         TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 18 conjuncts are in the unsatisfiable core
[2025-03-03 09:12:00,817 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 09:12:00,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 3169 backedges. 580 proven. 136 refuted. 0 times theorem prover too weak. 2453 trivial. 0 not checked.
[2025-03-03 09:12:00,840 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-03 09:12:01,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 3169 backedges. 0 proven. 718 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked.
[2025-03-03 09:12:01,146 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037040721] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-03 09:12:01,146 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-03 09:12:01,146 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36
[2025-03-03 09:12:01,146 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787448091]
[2025-03-03 09:12:01,146 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-03 09:12:01,146 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2025-03-03 09:12:01,146 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 09:12:01,147 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2025-03-03 09:12:01,147 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260
[2025-03-03 09:12:01,147 INFO  L87              Difference]: Start difference. First operand 103 states and 107 transitions. Second operand  has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2025-03-03 09:12:01,177 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 09:12:01,177 INFO  L93              Difference]: Finished difference Result 160 states and 187 transitions.
[2025-03-03 09:12:01,178 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2025-03-03 09:12:01,178 INFO  L78                 Accepts]: Start accepts. Automaton has  has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142
[2025-03-03 09:12:01,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 09:12:01,179 INFO  L225             Difference]: With dead ends: 160
[2025-03-03 09:12:01,179 INFO  L226             Difference]: Without dead ends: 121
[2025-03-03 09:12:01,179 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260
[2025-03-03 09:12:01,180 INFO  L435           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-03 09:12:01,180 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-03 09:12:01,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2025-03-03 09:12:01,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121.
[2025-03-03 09:12:01,185 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 116 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2025-03-03 09:12:01,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions.
[2025-03-03 09:12:01,186 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 142
[2025-03-03 09:12:01,186 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 09:12:01,186 INFO  L471      AbstractCegarLoop]: Abstraction has 121 states and 125 transitions.
[2025-03-03 09:12:01,186 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2025-03-03 09:12:01,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions.
[2025-03-03 09:12:01,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2025-03-03 09:12:01,187 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 09:12:01,187 INFO  L218           NwaCegarLoop]: trace histogram [102, 60, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-03 09:12:01,195 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2025-03-03 09:12:01,391 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2025-03-03 09:12:01,391 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 09:12:01,391 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 09:12:01,392 INFO  L85        PathProgramCache]: Analyzing trace with hash 921255453, now seen corresponding path program 11 times
[2025-03-03 09:12:01,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 09:12:01,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84527500]
[2025-03-03 09:12:01,392 INFO  L95    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2025-03-03 09:12:01,392 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 09:12:01,424 INFO  L108    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 196 statements into 37 equivalence classes.
[2025-03-03 09:12:02,851 INFO  L111    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) and asserted 185 of 196 statements.
[2025-03-03 09:12:02,851 INFO  L114    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s)
[2025-03-03 09:12:02,851 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 09:12:03,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 7354 backedges. 1227 proven. 1822 refuted. 0 times theorem prover too weak. 4305 trivial. 0 not checked.
[2025-03-03 09:12:03,913 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 09:12:03,913 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84527500]
[2025-03-03 09:12:03,913 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84527500] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 09:12:03,913 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246661158]
[2025-03-03 09:12:03,913 INFO  L95    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2025-03-03 09:12:03,913 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 09:12:03,913 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 09:12:03,915 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 09:12:03,916 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2025-03-03 09:12:04,072 INFO  L108    AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 196 statements into 37 equivalence classes.