/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_amount100_file-52.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:59:20,983 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:59:21,048 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 00:59:21,052 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:59:21,052 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:59:21,083 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:59:21,083 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:59:21,084 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:59:21,085 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:59:21,086 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:59:21,086 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:59:21,086 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:59:21,087 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:59:21,087 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:59:21,087 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:59:21,087 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:59:21,088 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:59:21,088 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:59:21,088 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:59:21,089 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:59:21,089 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:59:21,090 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:59:21,090 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:59:21,090 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:59:21,091 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:59:21,091 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:59:21,091 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:59:21,091 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:59:21,092 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:59:21,092 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:59:21,092 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:59:21,092 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:59:21,093 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:59:21,093 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:59:21,093 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:59:21,094 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:59:21,094 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:59:21,094 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:59:21,094 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:59:21,094 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:59:21,094 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:59:21,096 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:59:21,096 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:59:21,096 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:59:21,096 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:59:21,323 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:59:21,343 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:59:21,348 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:59:21,349 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:59:21,350 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:59:21,352 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-52.i
[2024-11-03 00:59:22,758 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:59:22,954 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:59:22,954 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-52.i
[2024-11-03 00:59:22,963 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd93b3b6/b68e5b93bbcf44fcaaf41eb114f5ff99/FLAGa4467b0bd
[2024-11-03 00:59:22,979 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd93b3b6/b68e5b93bbcf44fcaaf41eb114f5ff99
[2024-11-03 00:59:22,983 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:59:22,985 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:59:22,986 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:59:22,986 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:59:22,992 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:59:22,993 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:22" (1/1) ...
[2024-11-03 00:59:22,994 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2360b9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:22, skipping insertion in model container
[2024-11-03 00:59:22,994 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:22" (1/1) ...
[2024-11-03 00:59:23,023 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:59:23,219 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_amount100_file-52.i[916,929]
[2024-11-03 00:59:23,312 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:59:23,325 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:59:23,337 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_amount100_file-52.i[916,929]
[2024-11-03 00:59:23,377 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:59:23,403 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:59:23,403 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23 WrapperNode
[2024-11-03 00:59:23,403 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:59:23,404 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:59:23,405 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:59:23,405 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:59:23,411 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,424 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,456 INFO  L138                Inliner]: procedures = 27, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 229
[2024-11-03 00:59:23,457 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:59:23,458 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:59:23,458 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:59:23,458 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:59:23,468 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,468 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,477 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,504 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 00:59:23,504 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,505 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,527 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,534 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,542 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,544 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,558 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:59:23,559 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:59:23,559 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:59:23,559 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:59:23,578 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (1/1) ...
[2024-11-03 00:59:23,586 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:59:23,596 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:59:23,613 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 00:59:23,616 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 00:59:23,641 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:59:23,641 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:59:23,641 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:59:23,641 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:59:23,642 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:59:23,643 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:59:23,751 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:59:23,753 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:59:36,898 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-03 00:59:36,898 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:59:36,912 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:59:36,913 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:59:36,914 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:59:36 BoogieIcfgContainer
[2024-11-03 00:59:36,914 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:59:36,917 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:59:36,918 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:59:36,921 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:59:36,922 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:59:22" (1/3) ...
[2024-11-03 00:59:36,923 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4482f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:59:36, skipping insertion in model container
[2024-11-03 00:59:36,923 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:23" (2/3) ...
[2024-11-03 00:59:36,924 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4482f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:59:36, skipping insertion in model container
[2024-11-03 00:59:36,924 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:59:36" (3/3) ...
[2024-11-03 00:59:36,926 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-52.i
[2024-11-03 00:59:36,941 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:59:36,942 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:59:37,001 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:59:37,006 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;@2b1d6528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:59:37,007 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:59:37,012 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 98 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 60 states have internal predecessors, (81), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-03 00:59:37,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2024-11-03 00:59:37,031 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:59:37,032 INFO  L215           NwaCegarLoop]: trace histogram [36, 36, 36, 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, 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, 1]
[2024-11-03 00:59:37,032 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:59:37,036 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:59:37,037 INFO  L85        PathProgramCache]: Analyzing trace with hash 2109933167, now seen corresponding path program 1 times
[2024-11-03 00:59:37,044 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:59:37,044 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910727541]
[2024-11-03 00:59:37,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:59:37,046 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:59:37,046 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:59:37,050 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 00:59:37,050 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 00:59:37,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:59:37,631 INFO  L255         TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:59:37,643 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:59:37,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked.
[2024-11-03 00:59:37,700 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:59:39,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked.
[2024-11-03 00:59:39,171 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:59:39,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910727541]
[2024-11-03 00:59:39,172 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [910727541] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:59:39,172 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:59:39,172 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:59:39,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171646456]
[2024-11-03 00:59:39,174 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:59:39,179 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:59:39,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:59:39,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:59:39,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:59:39,204 INFO  L87              Difference]: Start difference. First operand  has 98 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 60 states have internal predecessors, (81), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 1 states have call successors, (36)
[2024-11-03 00:59:39,234 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:59:39,235 INFO  L93              Difference]: Finished difference Result 189 states and 336 transitions.
[2024-11-03 00:59:39,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:59:39,237 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 1 states have call successors, (36) Word has length 225
[2024-11-03 00:59:39,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:59:39,245 INFO  L225             Difference]: With dead ends: 189
[2024-11-03 00:59:39,246 INFO  L226             Difference]: Without dead ends: 94
[2024-11-03 00:59:39,251 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 448 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 00:59:39,258 INFO  L432           NwaCegarLoop]: 146 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, 146 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 00:59:39,259 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:59:39,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2024-11-03 00:59:39,307 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2024-11-03 00:59:39,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-03 00:59:39,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 146 transitions.
[2024-11-03 00:59:39,318 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 146 transitions. Word has length 225
[2024-11-03 00:59:39,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:59:39,320 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 146 transitions.
[2024-11-03 00:59:39,321 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 1 states have call successors, (36)
[2024-11-03 00:59:39,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 146 transitions.
[2024-11-03 00:59:39,328 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2024-11-03 00:59:39,329 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:59:39,329 INFO  L215           NwaCegarLoop]: trace histogram [36, 36, 36, 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, 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, 1]
[2024-11-03 00:59:39,338 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 00:59:39,531 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 00:59:39,531 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:59:39,532 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:59:39,532 INFO  L85        PathProgramCache]: Analyzing trace with hash 1247476351, now seen corresponding path program 1 times
[2024-11-03 00:59:39,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:59:39,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858066510]
[2024-11-03 00:59:39,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:59:39,533 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:59:39,533 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:59:39,535 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 00:59:39,536 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 00:59:41,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:59:41,358 INFO  L255         TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 00:59:41,365 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:59:43,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 1275 proven. 45 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 00:59:43,711 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:59:46,325 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked.
[2024-11-03 00:59:46,326 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:59:46,326 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858066510]
[2024-11-03 00:59:46,326 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [858066510] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:59:46,326 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:59:46,327 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 00:59:46,327 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184805506]
[2024-11-03 00:59:46,327 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:59:46,329 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 00:59:46,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:59:46,330 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 00:59:46,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 00:59:46,330 INFO  L87              Difference]: Start difference. First operand 94 states and 146 transitions. Second operand  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:59:53,232 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:59:57,248 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:00:01,261 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:00:01,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:00:01,267 INFO  L93              Difference]: Finished difference Result 193 states and 296 transitions.
[2024-11-03 01:00:01,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 01:00:01,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 225
[2024-11-03 01:00:01,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:00:01,359 INFO  L225             Difference]: With dead ends: 193
[2024-11-03 01:00:01,359 INFO  L226             Difference]: Without dead ends: 102
[2024-11-03 01:00:01,360 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2024-11-03 01:00:01,362 INFO  L432           NwaCegarLoop]: 104 mSDtfsCounter, 132 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:00:01,366 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 238 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 192 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time]
[2024-11-03 01:00:01,367 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2024-11-03 01:00:01,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98.
[2024-11-03 01:00:01,393 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 98 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-03 01:00:01,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 148 transitions.
[2024-11-03 01:00:01,395 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 148 transitions. Word has length 225
[2024-11-03 01:00:01,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:00:01,396 INFO  L471      AbstractCegarLoop]: Abstraction has 98 states and 148 transitions.
[2024-11-03 01:00:01,396 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 01:00:01,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 148 transitions.
[2024-11-03 01:00:01,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2024-11-03 01:00:01,404 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:00:01,404 INFO  L215           NwaCegarLoop]: trace histogram [36, 36, 36, 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, 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, 1, 1]
[2024-11-03 01:00:01,434 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 01:00:01,605 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 01:00:01,605 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:00:01,606 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:00:01,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 250034438, now seen corresponding path program 1 times
[2024-11-03 01:00:01,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:00:01,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001601126]
[2024-11-03 01:00:01,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:00:01,607 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:00:01,607 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:00:01,609 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 01:00:01,611 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 01:00:04,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:00:04,405 INFO  L255         TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-03 01:00:04,411 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:00:11,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 825 proven. 114 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked.
[2024-11-03 01:00:11,194 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:00:13,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked.
[2024-11-03 01:00:13,151 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:00:13,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001601126]
[2024-11-03 01:00:13,151 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2001601126] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-03 01:00:13,151 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-03 01:00:13,151 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11
[2024-11-03 01:00:13,152 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928394378]
[2024-11-03 01:00:13,152 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-03 01:00:13,154 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:00:13,154 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:00:13,155 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:00:13,155 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-03 01:00:13,156 INFO  L87              Difference]: Start difference. First operand 98 states and 148 transitions. Second operand  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36)
[2024-11-03 01:00:16,687 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:00:21,224 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:00:25,233 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:00:25,327 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:00:25,327 INFO  L93              Difference]: Finished difference Result 202 states and 303 transitions.
[2024-11-03 01:00:25,328 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:00:25,328 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226
[2024-11-03 01:00:25,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:00:25,330 INFO  L225             Difference]: With dead ends: 202
[2024-11-03 01:00:25,330 INFO  L226             Difference]: Without dead ends: 107
[2024-11-03 01:00:25,331 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2024-11-03 01:00:25,332 INFO  L432           NwaCegarLoop]: 143 mSDtfsCounter, 10 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:00:25,332 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 260 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time]
[2024-11-03 01:00:25,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-11-03 01:00:25,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99.
[2024-11-03 01:00:25,346 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 99 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-03 01:00:25,347 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 149 transitions.
[2024-11-03 01:00:25,348 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 149 transitions. Word has length 226
[2024-11-03 01:00:25,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:00:25,352 INFO  L471      AbstractCegarLoop]: Abstraction has 99 states and 149 transitions.
[2024-11-03 01:00:25,352 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36)
[2024-11-03 01:00:25,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 149 transitions.
[2024-11-03 01:00:25,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2024-11-03 01:00:25,355 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:00:25,356 INFO  L215           NwaCegarLoop]: trace histogram [36, 36, 36, 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, 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, 1, 1]
[2024-11-03 01:00:25,387 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 01:00:25,556 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 01:00:25,557 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:00:25,557 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:00:25,558 INFO  L85        PathProgramCache]: Analyzing trace with hash 248187396, now seen corresponding path program 1 times
[2024-11-03 01:00:25,558 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:00:25,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320392997]
[2024-11-03 01:00:25,558 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:00:25,558 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:00:25,559 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:00:25,561 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 01:00:25,562 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 01:00:28,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:00:28,767 INFO  L255         TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 71 conjuncts are in the unsatisfiable core
[2024-11-03 01:00:28,782 INFO  L278         TraceCheckSpWp]: Computing forward predicates...