/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-81.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:33:30,508 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:33:30,554 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 01:33:30,557 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:33:30,558 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:33:30,573 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:33:30,574 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:33:30,574 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:33:30,575 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:33:30,575 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:33:30,575 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:33:30,575 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:33:30,576 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:33:30,576 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:33:30,576 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:33:30,577 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:33:30,577 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:33:30,577 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:33:30,577 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:33:30,578 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:33:30,578 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:33:30,578 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:33:30,579 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:33:30,579 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:33:30,579 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:33:30,579 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:33:30,580 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:33:30,580 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:33:30,580 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:33:30,580 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:33:30,580 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:33:30,581 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:33:30,581 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:33:30,581 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:33:30,581 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:33:30,582 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:33:30,582 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:33:30,582 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:33:30,582 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:33:30,582 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:30,583 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:33:30,583 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:33:30,583 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:33:30,583 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:33:30,583 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:30,754 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:33:30,775 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:33:30,777 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:33:30,779 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:33:30,779 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:33:30,780 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-81.i
[2024-11-03 01:33:32,188 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:33:32,347 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:33:32,347 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-81.i
[2024-11-03 01:33:32,354 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bf56944/f76fc22256ef45558bb188c15b6bf677/FLAG643c6cbf9
[2024-11-03 01:33:32,753 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bf56944/f76fc22256ef45558bb188c15b6bf677
[2024-11-03 01:33:32,755 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:33:32,757 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:33:32,758 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:33:32,758 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:33:32,764 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:33:32,764 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:33:32" (1/1) ...
[2024-11-03 01:33:32,765 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2139be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:32, skipping insertion in model container
[2024-11-03 01:33:32,765 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:33:32" (1/1) ...
[2024-11-03 01:33:32,789 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:33:32,924 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928]
[2024-11-03 01:33:32,959 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:33:32,969 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:33:32,977 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928]
[2024-11-03 01:33:32,991 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:33:33,005 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:33:33,005 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33 WrapperNode
[2024-11-03 01:33:33,005 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:33:33,006 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:33:33,006 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:33:33,006 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:33:33,011 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,017 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,035 INFO  L138                Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 115
[2024-11-03 01:33:33,035 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:33:33,036 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:33:33,036 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:33:33,036 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:33:33,047 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,048 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,053 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,062 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-03 01:33:33,062 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,062 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,076 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,078 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,083 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,084 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,090 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:33:33,091 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:33:33,091 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:33:33,091 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:33:33,091 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (1/1) ...
[2024-11-03 01:33:33,096 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:33:33,104 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:33:33,117 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 01:33:33,125 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 01:33:33,147 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:33:33,147 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:33:33,147 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:33:33,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:33:33,147 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:33:33,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:33:33,215 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:33:33,216 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:33:34,769 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-03 01:33:34,770 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:33:34,779 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:33:34,779 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:33:34,780 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:33:34 BoogieIcfgContainer
[2024-11-03 01:33:34,780 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:33:34,782 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:33:34,782 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:33:34,784 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:33:34,785 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:33:32" (1/3) ...
[2024-11-03 01:33:34,785 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acdc02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:33:34, skipping insertion in model container
[2024-11-03 01:33:34,785 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:33:33" (2/3) ...
[2024-11-03 01:33:34,785 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acdc02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:33:34, skipping insertion in model container
[2024-11-03 01:33:34,786 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:33:34" (3/3) ...
[2024-11-03 01:33:34,787 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-81.i
[2024-11-03 01:33:34,802 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:33:34,802 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:33:34,847 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:33:34,853 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;@71e14c44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:33:34,854 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:33:34,857 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 54 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:33:34,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2024-11-03 01:33:34,865 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:33:34,865 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:33:34,866 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:33:34,870 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:33:34,870 INFO  L85        PathProgramCache]: Analyzing trace with hash -1169417548, now seen corresponding path program 1 times
[2024-11-03 01:33:34,876 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:33:34,876 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958890155]
[2024-11-03 01:33:34,876 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:33:34,877 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:34,878 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:33:34,879 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:33:34,880 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 01:33:35,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:33:35,420 INFO  L255         TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:33:35,428 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:33:35,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:33:35,818 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:33:36,069 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:33:36,070 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:33:36,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958890155]
[2024-11-03 01:33:36,070 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [958890155] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:33:36,070 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:33:36,071 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:33:36,072 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145715104]
[2024-11-03 01:33:36,073 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:33:36,077 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:33:36,077 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:33:36,095 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:33:36,096 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:33:36,098 INFO  L87              Difference]: Start difference. First operand  has 54 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)
[2024-11-03 01:33:38,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:33:38,816 INFO  L93              Difference]: Finished difference Result 155 states and 267 transitions.
[2024-11-03 01:33:38,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:33:38,834 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 105
[2024-11-03 01:33:38,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:33:38,841 INFO  L225             Difference]: With dead ends: 155
[2024-11-03 01:33:38,841 INFO  L226             Difference]: Without dead ends: 104
[2024-11-03 01:33:38,844 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:33:38,847 INFO  L432           NwaCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:33:38,847 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 305 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2024-11-03 01:33:38,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2024-11-03 01:33:38,887 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95.
[2024-11-03 01:33:38,888 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 01:33:38,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions.
[2024-11-03 01:33:38,891 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 105
[2024-11-03 01:33:38,891 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:33:38,891 INFO  L471      AbstractCegarLoop]: Abstraction has 95 states and 139 transitions.
[2024-11-03 01:33:38,892 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)
[2024-11-03 01:33:38,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions.
[2024-11-03 01:33:38,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2024-11-03 01:33:38,894 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:33:38,894 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:33:38,907 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 01:33:39,095 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:39,095 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:33:39,096 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:33:39,096 INFO  L85        PathProgramCache]: Analyzing trace with hash -1562444558, now seen corresponding path program 1 times
[2024-11-03 01:33:39,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:33:39,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935924602]
[2024-11-03 01:33:39,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:33:39,097 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:39,097 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:33:39,102 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:33:39,110 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 01:33:39,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:33:39,622 INFO  L255         TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:33:39,625 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:33:39,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:33:39,676 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:33:39,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:33:39,783 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:33:39,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935924602]
[2024-11-03 01:33:39,784 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [935924602] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:33:39,784 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:33:39,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-03 01:33:39,784 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219111284]
[2024-11-03 01:33:39,784 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:33:39,785 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 01:33:39,786 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:33:39,786 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 01:33:39,786 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:33:39,787 INFO  L87              Difference]: Start difference. First operand 95 states and 139 transitions. Second operand  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:33:40,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:33:40,866 INFO  L93              Difference]: Finished difference Result 142 states and 208 transitions.
[2024-11-03 01:33:40,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:33:40,868 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105
[2024-11-03 01:33:40,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:33:40,869 INFO  L225             Difference]: With dead ends: 142
[2024-11-03 01:33:40,870 INFO  L226             Difference]: Without dead ends: 95
[2024-11-03 01:33:40,870 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:33:40,873 INFO  L432           NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-03 01:33:40,874 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-03 01:33:40,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2024-11-03 01:33:40,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95.
[2024-11-03 01:33:40,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 01:33:40,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions.
[2024-11-03 01:33:40,901 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 105
[2024-11-03 01:33:40,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:33:40,902 INFO  L471      AbstractCegarLoop]: Abstraction has 95 states and 137 transitions.
[2024-11-03 01:33:40,902 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:33:40,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions.
[2024-11-03 01:33:40,905 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2024-11-03 01:33:40,905 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:33:40,906 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:33:40,919 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 01:33:41,111 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:41,111 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:33:41,112 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:33:41,112 INFO  L85        PathProgramCache]: Analyzing trace with hash -1426701330, now seen corresponding path program 1 times
[2024-11-03 01:33:41,112 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:33:41,112 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858788022]
[2024-11-03 01:33:41,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:33:41,113 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:41,113 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:33:41,115 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:33:41,117 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 01:33:41,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:33:41,594 INFO  L255         TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:33:41,597 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:33:41,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked.
[2024-11-03 01:33:41,668 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:33:41,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2024-11-03 01:33:41,820 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:33:41,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858788022]
[2024-11-03 01:33:41,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1858788022] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:33:41,820 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:33:41,820 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-03 01:33:41,820 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560263626]
[2024-11-03 01:33:41,820 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:33:41,823 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:33:41,823 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:33:41,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:33:41,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:33:41,824 INFO  L87              Difference]: Start difference. First operand 95 states and 137 transitions. Second operand  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)
[2024-11-03 01:33:43,860 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:33:45,566 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:33:45,567 INFO  L93              Difference]: Finished difference Result 262 states and 366 transitions.
[2024-11-03 01:33:45,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2024-11-03 01:33:45,567 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106
[2024-11-03 01:33:45,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:33:45,569 INFO  L225             Difference]: With dead ends: 262
[2024-11-03 01:33:45,569 INFO  L226             Difference]: Without dead ends: 170
[2024-11-03 01:33:45,570 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2024-11-03 01:33:45,571 INFO  L432           NwaCegarLoop]: 49 mSDtfsCounter, 168 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:33:45,571 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 155 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2024-11-03 01:33:45,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2024-11-03 01:33:45,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155.
[2024-11-03 01:33:45,587 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 155 states, 100 states have (on average 1.17) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-03 01:33:45,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions.
[2024-11-03 01:33:45,588 INFO  L78                 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 106
[2024-11-03 01:33:45,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:33:45,589 INFO  L471      AbstractCegarLoop]: Abstraction has 155 states and 213 transitions.
[2024-11-03 01:33:45,589 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)
[2024-11-03 01:33:45,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions.
[2024-11-03 01:33:45,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2024-11-03 01:33:45,590 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:33:45,590 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:33:45,599 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 01:33:45,794 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:45,795 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:33:45,796 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:33:45,796 INFO  L85        PathProgramCache]: Analyzing trace with hash 2060766382, now seen corresponding path program 1 times
[2024-11-03 01:33:45,796 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:33:45,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375521615]
[2024-11-03 01:33:45,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:33:45,796 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:33:45,797 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:33:45,800 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:33:45,804 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 01:33:46,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:33:46,214 INFO  L255         TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-03 01:33:46,218 INFO  L278         TraceCheckSpWp]: Computing forward predicates...