/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_amount10_file-79.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:10:02,722 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:10:02,772 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 01:10:02,775 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:10:02,775 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:10:02,799 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:10:02,800 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:10:02,800 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:10:02,800 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:10:02,800 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:10:02,801 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:10:02,801 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:10:02,803 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:10:02,806 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:10:02,806 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:10:02,807 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:10:02,807 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:10:02,807 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:10:02,807 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:10:02,807 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:10:02,807 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:10:02,811 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:10:02,811 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:10:02,812 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:10:02,813 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:10:02,813 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:10:02,813 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:10:02,813 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:10:02,813 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:10:02,813 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:10:02,813 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:10:02,814 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:10:02,814 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:10:02,814 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:10:02,815 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:10:02,815 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:10:02,815 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:10:02,815 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:10:02,815 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:10:02,816 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:10:02,995 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:10:03,012 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:10:03,014 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:10:03,015 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:10:03,015 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:10:03,016 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-79.i
[2024-11-03 01:10:04,395 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:10:04,613 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:10:04,613 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-79.i
[2024-11-03 01:10:04,619 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d48a4392/818a21c6d1274f0da86e375c03dd8c78/FLAG2f0d34694
[2024-11-03 01:10:04,974 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d48a4392/818a21c6d1274f0da86e375c03dd8c78
[2024-11-03 01:10:04,976 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:10:04,978 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:10:04,980 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:10:04,980 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:10:04,988 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:10:04,988 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:10:04" (1/1) ...
[2024-11-03 01:10:04,989 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a81eff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:04, skipping insertion in model container
[2024-11-03 01:10:04,989 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:10:04" (1/1) ...
[2024-11-03 01:10:05,007 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:10:05,129 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_amount10_file-79.i[915,928]
[2024-11-03 01:10:05,149 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:10:05,160 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:10:05,170 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_amount10_file-79.i[915,928]
[2024-11-03 01:10:05,178 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:10:05,200 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:10:05,202 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05 WrapperNode
[2024-11-03 01:10:05,202 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:10:05,203 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:10:05,203 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:10:05,203 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:10:05,211 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,217 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,231 INFO  L138                Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76
[2024-11-03 01:10:05,231 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:10:05,232 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:10:05,232 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:10:05,232 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:10:05,239 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,239 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,241 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,248 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 01:10:05,248 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,249 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,253 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,259 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,264 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,265 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,271 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:10:05,272 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:10:05,272 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:10:05,272 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:10:05,273 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (1/1) ...
[2024-11-03 01:10:05,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:10:05,287 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:10:05,298 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 01:10:05,300 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 01:10:05,319 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:10:05,320 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:10:05,320 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:10:05,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:10:05,320 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:10:05,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:10:05,374 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:10:05,375 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:10:05,801 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 01:10:05,801 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:10:05,814 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:10:05,814 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:10:05,815 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:10:05 BoogieIcfgContainer
[2024-11-03 01:10:05,815 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:10:05,817 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:10:05,817 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:10:05,819 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:10:05,820 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:10:04" (1/3) ...
[2024-11-03 01:10:05,820 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed39fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:10:05, skipping insertion in model container
[2024-11-03 01:10:05,820 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:10:05" (2/3) ...
[2024-11-03 01:10:05,820 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed39fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:10:05, skipping insertion in model container
[2024-11-03 01:10:05,821 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:10:05" (3/3) ...
[2024-11-03 01:10:05,822 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-79.i
[2024-11-03 01:10:05,836 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:10:05,837 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:10:05,890 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:10:05,894 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;@3aebd4d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:10:05,894 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:10:05,897 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 38 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 01:10:05,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 01:10:05,903 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:10:05,903 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 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 01:10:05,903 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:10:05,906 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:10:05,907 INFO  L85        PathProgramCache]: Analyzing trace with hash -1896983747, now seen corresponding path program 1 times
[2024-11-03 01:10:05,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:10:05,912 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492125932]
[2024-11-03 01:10:05,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:10:05,922 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:10:05,923 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:10:05,925 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 01:10:05,927 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 01:10:06,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:10:06,108 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:10:06,115 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:10:06,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 01:10:06,142 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:10:06,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 01:10:06,189 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:10:06,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492125932]
[2024-11-03 01:10:06,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [492125932] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:10:06,190 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:10:06,190 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:10:06,191 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949779057]
[2024-11-03 01:10:06,192 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:10:06,194 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:10:06,195 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:10:06,207 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:10:06,207 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:10:06,209 INFO  L87              Difference]: Start difference. First operand  has 38 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:10:06,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:10:06,222 INFO  L93              Difference]: Finished difference Result 69 states and 110 transitions.
[2024-11-03 01:10:06,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:10:06,223 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66
[2024-11-03 01:10:06,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:10:06,228 INFO  L225             Difference]: With dead ends: 69
[2024-11-03 01:10:06,228 INFO  L226             Difference]: Without dead ends: 34
[2024-11-03 01:10:06,229 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:10:06,231 INFO  L432           NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:10:06,233 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:10:06,243 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2024-11-03 01:10:06,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2024-11-03 01:10:06,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 01:10:06,261 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions.
[2024-11-03 01:10:06,262 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 66
[2024-11-03 01:10:06,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:10:06,263 INFO  L471      AbstractCegarLoop]: Abstraction has 34 states and 46 transitions.
[2024-11-03 01:10:06,263 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:10:06,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions.
[2024-11-03 01:10:06,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 01:10:06,268 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:10:06,268 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 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 01:10:06,283 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 01:10:06,469 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 01:10:06,469 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:10:06,470 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:10:06,470 INFO  L85        PathProgramCache]: Analyzing trace with hash 1400731073, now seen corresponding path program 1 times
[2024-11-03 01:10:06,470 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:10:06,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170621824]
[2024-11-03 01:10:06,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:10:06,470 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:10:06,471 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:10:06,477 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 01:10:06,478 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 01:10:06,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:10:06,779 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-03 01:10:06,787 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:10:10,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2024-11-03 01:10:10,352 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:10:22,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2024-11-03 01:10:22,770 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:10:22,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170621824]
[2024-11-03 01:10:22,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [170621824] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:10:22,770 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:10:22,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16
[2024-11-03 01:10:22,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516447835]
[2024-11-03 01:10:22,771 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:10:22,772 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-03 01:10:22,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:10:22,772 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-03 01:10:22,773 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2024-11-03 01:10:22,773 INFO  L87              Difference]: Start difference. First operand 34 states and 46 transitions. Second operand  has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:10:33,418 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-03 01:10:51,159 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-03 01:11:02,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:11:02,149 INFO  L93              Difference]: Finished difference Result 62 states and 76 transitions.
[2024-11-03 01:11:02,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2024-11-03 01:11:02,159 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 66
[2024-11-03 01:11:02,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:11:02,160 INFO  L225             Difference]: With dead ends: 62
[2024-11-03 01:11:02,160 INFO  L226             Difference]: Without dead ends: 60
[2024-11-03 01:11:02,161 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600
[2024-11-03 01:11:02,161 INFO  L432           NwaCegarLoop]: 34 mSDtfsCounter, 97 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:11:02,162 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 209 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 32.0s Time]
[2024-11-03 01:11:02,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2024-11-03 01:11:02,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50.
[2024-11-03 01:11:02,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 01:11:02,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions.
[2024-11-03 01:11:02,177 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 66
[2024-11-03 01:11:02,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:11:02,177 INFO  L471      AbstractCegarLoop]: Abstraction has 50 states and 62 transitions.
[2024-11-03 01:11:02,177 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:11:02,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions.
[2024-11-03 01:11:02,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2024-11-03 01:11:02,180 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:11:02,180 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 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 01:11:02,186 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-03 01:11:02,380 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 01:11:02,381 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:11:02,382 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:11:02,382 INFO  L85        PathProgramCache]: Analyzing trace with hash 67502115, now seen corresponding path program 1 times
[2024-11-03 01:11:02,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:11:02,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211118514]
[2024-11-03 01:11:02,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:11:02,382 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:11:02,382 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:11:02,384 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 01:11:02,385 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 01:11:02,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:11:02,661 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-03 01:11:02,664 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:11:04,495 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:11:04,496 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:11:06,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:11:06,287 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:11:06,287 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211118514]
[2024-11-03 01:11:06,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1211118514] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:11:06,288 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:11:06,288 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11
[2024-11-03 01:11:06,288 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015146203]
[2024-11-03 01:11:06,288 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:11:06,288 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-03 01:11:06,288 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:11:06,289 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-03 01:11:06,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-03 01:11:06,289 INFO  L87              Difference]: Start difference. First operand 50 states and 62 transitions. Second operand  has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:11:07,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:11:07,120 INFO  L93              Difference]: Finished difference Result 67 states and 80 transitions.
[2024-11-03 01:11:07,121 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-03 01:11:07,122 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67
[2024-11-03 01:11:07,122 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:11:07,124 INFO  L225             Difference]: With dead ends: 67
[2024-11-03 01:11:07,124 INFO  L226             Difference]: Without dead ends: 65
[2024-11-03 01:11:07,126 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2024-11-03 01:11:07,127 INFO  L432           NwaCegarLoop]: 53 mSDtfsCounter, 49 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-03 01:11:07,127 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 283 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-03 01:11:07,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-03 01:11:07,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49.
[2024-11-03 01:11:07,136 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 01:11:07,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions.
[2024-11-03 01:11:07,141 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 67
[2024-11-03 01:11:07,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:11:07,142 INFO  L471      AbstractCegarLoop]: Abstraction has 49 states and 61 transitions.
[2024-11-03 01:11:07,142 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:11:07,142 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions.
[2024-11-03 01:11:07,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2024-11-03 01:11:07,143 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:11:07,143 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 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 01:11:07,149 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 01:11:07,343 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 01:11:07,344 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:11:07,344 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:11:07,344 INFO  L85        PathProgramCache]: Analyzing trace with hash 1854234678, now seen corresponding path program 1 times
[2024-11-03 01:11:07,345 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:11:07,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973320692]
[2024-11-03 01:11:07,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:11:07,345 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:11:07,345 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:11:07,350 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 01:11:07,350 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 01:11:07,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:11:07,626 INFO  L255         TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-03 01:11:07,632 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:11:25,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2024-11-03 01:11:25,830 INFO  L311         TraceCheckSpWp]: Computing backward predicates...