/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:47:28,502 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:47:28,554 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 13:47:28,558 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:47:28,558 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:47:28,577 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:47:28,577 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:47:28,578 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:47:28,578 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:47:28,579 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:47:28,579 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:47:28,579 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:47:28,579 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:47:28,580 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:47:28,580 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:47:28,580 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:47:28,580 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:47:28,580 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:47:28,581 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:47:28,581 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:47:28,583 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:47:28,583 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:47:28,584 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:47:28,584 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:47:28,585 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:47:28,586 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:47:28,586 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:47:28,587 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:47:28,587 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:47:28,588 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:47:28,588 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:47:28,588 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:47:28,589 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:47:28,589 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:47:28,765 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:47:28,783 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:47:28,785 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:47:28,786 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:47:28,787 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:47:28,788 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c
[2024-11-03 13:47:29,976 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:47:30,132 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:47:30,133 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c
[2024-11-03 13:47:30,138 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e0cbd91/a423bdf001a8480eab1466bdb23e070e/FLAGef9c249e2
[2024-11-03 13:47:30,544 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e0cbd91/a423bdf001a8480eab1466bdb23e070e
[2024-11-03 13:47:30,545 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:47:30,546 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:47:30,548 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:47:30,549 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:47:30,559 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:47:30,559 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,560 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112529e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30, skipping insertion in model container
[2024-11-03 13:47:30,560 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,576 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:47:30,702 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468]
[2024-11-03 13:47:30,706 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:47:30,715 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:47:30,735 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468]
[2024-11-03 13:47:30,737 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:47:30,749 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:47:30,749 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30 WrapperNode
[2024-11-03 13:47:30,749 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:47:30,750 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:47:30,750 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:47:30,750 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:47:30,756 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,764 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,780 INFO  L138                Inliner]: procedures = 19, calls = 55, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134
[2024-11-03 13:47:30,780 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:47:30,781 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:47:30,781 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:47:30,781 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:47:30,788 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,788 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,791 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,799 INFO  L175           MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 8, 6, 6, 8]. 27 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0, 0].
[2024-11-03 13:47:30,799 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,800 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,807 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,809 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,811 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,811 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,817 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:47:30,818 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:47:30,818 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:47:30,818 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:47:30,819 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (1/1) ...
[2024-11-03 13:47:30,825 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:47:30,832 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:47:30,842 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-03 13:47:30,845 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-03 13:47:30,862 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:47:30,862 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4
[2024-11-03 13:47:30,863 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:47:30,864 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:47:30,864 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-03 13:47:30,929 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:47:30,931 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:47:35,449 INFO  L?                        ?]: Removed 17 outVars from TransFormulas that were not future-live.
[2024-11-03 13:47:35,449 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:47:35,456 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:47:35,456 INFO  L316             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-03 13:47:35,457 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:35 BoogieIcfgContainer
[2024-11-03 13:47:35,457 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:47:35,458 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:47:35,459 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:47:35,461 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:47:35,461 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:47:30" (1/3) ...
[2024-11-03 13:47:35,461 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff45ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:35, skipping insertion in model container
[2024-11-03 13:47:35,461 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:30" (2/3) ...
[2024-11-03 13:47:35,462 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff45ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:35, skipping insertion in model container
[2024-11-03 13:47:35,462 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:35" (3/3) ...
[2024-11-03 13:47:35,462 INFO  L112   eAbstractionObserver]: Analyzing ICFG interpolation2.c.p+cfa-reducer.c
[2024-11-03 13:47:35,473 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:47:35,473 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:47:35,508 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:47:35,513 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;@759518d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:47:35,514 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:47:35,517 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:47:35,521 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-03 13:47:35,522 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:47:35,522 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:47:35,522 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:47:35,526 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:47:35,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 83921358, now seen corresponding path program 1 times
[2024-11-03 13:47:35,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:47:35,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096842402]
[2024-11-03 13:47:35,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:47:35,534 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:47:35,534 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:47:35,535 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:47:35,536 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:47:35,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:47:35,605 INFO  L255         TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 13:47:35,608 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:47:35,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:47:35,670 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:47:35,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:47:35,725 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:47:35,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096842402]
[2024-11-03 13:47:35,726 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2096842402] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:47:35,726 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:47:35,726 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-03 13:47:35,728 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743851649]
[2024-11-03 13:47:35,728 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:47:35,733 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 13:47:35,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:47:35,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 13:47:35,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 13:47:35,757 INFO  L87              Difference]: Start difference. First operand  has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:47:39,966 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:47:43,970 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:47:47,973 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:47:52,160 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:47:56,167 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:47:57,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:47:57,067 INFO  L93              Difference]: Finished difference Result 35 states and 47 transitions.
[2024-11-03 13:47:57,070 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 13:47:57,071 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-11-03 13:47:57,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:47:57,076 INFO  L225             Difference]: With dead ends: 35
[2024-11-03 13:47:57,077 INFO  L226             Difference]: Without dead ends: 21
[2024-11-03 13:47:57,078 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 13:47:57,082 INFO  L432           NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time
[2024-11-03 13:47:57,083 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 21.3s Time]
[2024-11-03 13:47:57,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-11-03 13:47:57,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19.
[2024-11-03 13:47:57,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:47:57,104 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions.
[2024-11-03 13:47:57,105 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12
[2024-11-03 13:47:57,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:47:57,105 INFO  L471      AbstractCegarLoop]: Abstraction has 19 states and 25 transitions.
[2024-11-03 13:47:57,105 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:47:57,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions.
[2024-11-03 13:47:57,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-03 13:47:57,106 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:47:57,106 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:47:57,108 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:47:57,308 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:47:57,308 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:47:57,309 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:47:57,309 INFO  L85        PathProgramCache]: Analyzing trace with hash -6868241, now seen corresponding path program 1 times
[2024-11-03 13:47:57,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:47:57,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364578832]
[2024-11-03 13:47:57,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:47:57,309 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:47:57,310 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:47:57,310 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:47:57,311 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:47:57,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:47:57,377 INFO  L255         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 13:47:57,378 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:47:57,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:47:57,482 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:47:57,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:47:57,616 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:47:57,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364578832]
[2024-11-03 13:47:57,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [364578832] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:47:57,616 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:47:57,616 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-03 13:47:57,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20407888]
[2024-11-03 13:47:57,617 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:47:57,617 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 13:47:57,618 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:47:57,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 13:47:57,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:47:57,618 INFO  L87              Difference]: Start difference. First operand 19 states and 25 transitions. Second operand  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:48:01,783 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:48:05,787 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-11-03 13:48:05,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:48:05,894 INFO  L93              Difference]: Finished difference Result 23 states and 28 transitions.
[2024-11-03 13:48:05,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 13:48:05,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-11-03 13:48:05,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:48:05,895 INFO  L225             Difference]: With dead ends: 23
[2024-11-03 13:48:05,895 INFO  L226             Difference]: Without dead ends: 19
[2024-11-03 13:48:05,895 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:48:05,896 INFO  L432           NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2024-11-03 13:48:05,896 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time]
[2024-11-03 13:48:05,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-03 13:48:05,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2024-11-03 13:48:05,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:48:05,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions.
[2024-11-03 13:48:05,899 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13
[2024-11-03 13:48:05,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:48:05,899 INFO  L471      AbstractCegarLoop]: Abstraction has 19 states and 24 transitions.
[2024-11-03 13:48:05,899 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:48:05,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions.
[2024-11-03 13:48:05,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-03 13:48:05,899 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:48:05,900 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:48:05,902 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:48:06,101 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:48:06,101 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:48:06,102 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:48:06,102 INFO  L85        PathProgramCache]: Analyzing trace with hash 10142420, now seen corresponding path program 1 times
[2024-11-03 13:48:06,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:48:06,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760919920]
[2024-11-03 13:48:06,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:48:06,102 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:48:06,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:48:06,104 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:48:06,105 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:48:06,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:48:06,223 INFO  L255         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-03 13:48:06,226 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:48:08,839 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 105
[2024-11-03 13:48:08,860 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 84
[2024-11-03 13:48:08,949 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:48:08,949 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 92
[2024-11-03 13:48:08,972 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60
[2024-11-03 13:49:11,690 WARN  L286               SmtUtils]: Spent 26.40s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-03 13:49:13,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:49:13,806 INFO  L311         TraceCheckSpWp]: Computing backward predicates...