/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-02 22:31:13,688 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 22:31:13,755 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-02 22:31:13,761 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 22:31:13,762 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 22:31:13,788 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 22:31:13,788 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 22:31:13,789 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 22:31:13,789 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-02 22:31:13,790 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-02 22:31:13,790 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 22:31:13,790 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 22:31:13,791 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-02 22:31:13,791 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-02 22:31:13,792 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-02 22:31:13,792 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 22:31:13,792 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 22:31:13,793 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 22:31:13,793 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 22:31:13,796 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 22:31:13,799 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 22:31:13,799 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 22:31:13,799 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 22:31:13,799 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-02 22:31:13,800 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-02 22:31:13,800 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 22:31:13,800 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-02 22:31:13,800 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 22:31:13,800 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 22:31:13,801 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 22:31:13,801 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 22:31:13,801 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-02 22:31:13,801 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-02 22:31:13,802 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 22:31:13,802 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:31:13,803 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 22:31:13,804 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-02 22:31:13,805 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-02 22:31:13,805 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 22:31:13,805 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:14,023 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 22:31:14,045 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 22:31:14,047 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 22:31:14,048 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 22:31:14,048 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 22:31:14,049 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i
[2024-11-02 22:31:15,407 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 22:31:15,602 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 22:31:15,602 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i
[2024-11-02 22:31:15,614 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beabacf4b/7e9fe49e7e4a495992a6552f7ca999a8/FLAGee8b4a351
[2024-11-02 22:31:15,630 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beabacf4b/7e9fe49e7e4a495992a6552f7ca999a8
[2024-11-02 22:31:15,632 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 22:31:15,634 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-02 22:31:15,636 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 22:31:15,636 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 22:31:15,641 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 22:31:15,642 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:15,642 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f1a18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15, skipping insertion in model container
[2024-11-02 22:31:15,643 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:15,676 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 22:31:15,849 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_amount50_file-42.i[915,928]
[2024-11-02 22:31:15,904 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:31:15,921 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 22:31:15,930 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_amount50_file-42.i[915,928]
[2024-11-02 22:31:15,960 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:31:15,977 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 22:31:15,979 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15 WrapperNode
[2024-11-02 22:31:15,979 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 22:31:15,980 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 22:31:15,981 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 22:31:15,981 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 22:31:15,987 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:15,998 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,029 INFO  L138                Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122
[2024-11-02 22:31:16,029 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 22:31:16,030 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 22:31:16,030 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 22:31:16,030 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 22:31:16,043 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,043 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,051 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,069 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].
[2024-11-02 22:31:16,069 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,070 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,078 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,083 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,085 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,086 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,089 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 22:31:16,090 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 22:31:16,090 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 22:31:16,090 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 22:31:16,091 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (1/1) ...
[2024-11-02 22:31:16,100 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:31:16,110 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:16,127 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)
[2024-11-02 22:31:16,130 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
[2024-11-02 22:31:16,156 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 22:31:16,156 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-02 22:31:16,156 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-02 22:31:16,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-02 22:31:16,157 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 22:31:16,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 22:31:16,246 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 22:31:16,249 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 22:31:16,686 INFO  L?                        ?]: Removed 24 outVars from TransFormulas that were not future-live.
[2024-11-02 22:31:16,687 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 22:31:16,700 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 22:31:16,701 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-02 22:31:16,701 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:31:16 BoogieIcfgContainer
[2024-11-02 22:31:16,701 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 22:31:16,705 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 22:31:16,705 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 22:31:16,709 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 22:31:16,709 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:31:15" (1/3) ...
[2024-11-02 22:31:16,710 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf55ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:31:16, skipping insertion in model container
[2024-11-02 22:31:16,710 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:15" (2/3) ...
[2024-11-02 22:31:16,711 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf55ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:31:16, skipping insertion in model container
[2024-11-02 22:31:16,711 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:31:16" (3/3) ...
[2024-11-02 22:31:16,713 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-42.i
[2024-11-02 22:31:16,728 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 22:31:16,729 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-02 22:31:16,796 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 22:31:16,802 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;@45c57572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 22:31:16,802 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-02 22:31:16,807 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-02 22:31:16,815 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2024-11-02 22:31:16,815 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:16,815 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:16,816 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:16,819 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:16,819 INFO  L85        PathProgramCache]: Analyzing trace with hash 992786080, now seen corresponding path program 1 times
[2024-11-02 22:31:16,826 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:16,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609744837]
[2024-11-02 22:31:16,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:16,829 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:16,829 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:16,831 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:16,832 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-02 22:31:16,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:16,993 INFO  L255         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:17,003 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:17,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2024-11-02 22:31:17,036 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:17,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2024-11-02 22:31:17,144 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:17,144 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609744837]
[2024-11-02 22:31:17,144 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [609744837] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:31:17,144 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:31:17,145 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-02 22:31:17,147 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357795492]
[2024-11-02 22:31:17,147 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:31:17,150 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 22:31:17,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:17,168 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 22:31:17,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 22:31:17,171 INFO  L87              Difference]: Start difference. First operand  has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12)
[2024-11-02 22:31:17,189 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:17,189 INFO  L93              Difference]: Finished difference Result 99 states and 162 transitions.
[2024-11-02 22:31:17,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 22:31:17,193 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87
[2024-11-02 22:31:17,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:17,200 INFO  L225             Difference]: With dead ends: 99
[2024-11-02 22:31:17,201 INFO  L226             Difference]: Without dead ends: 49
[2024-11-02 22:31:17,203 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 22:31:17,206 INFO  L432           NwaCegarLoop]: 71 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, 71 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
[2024-11-02 22:31:17,207 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:31:17,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-02 22:31:17,237 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2024-11-02 22:31:17,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-02 22:31:17,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions.
[2024-11-02 22:31:17,241 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 87
[2024-11-02 22:31:17,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:17,241 INFO  L471      AbstractCegarLoop]: Abstraction has 49 states and 71 transitions.
[2024-11-02 22:31:17,241 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12)
[2024-11-02 22:31:17,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions.
[2024-11-02 22:31:17,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2024-11-02 22:31:17,245 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:17,245 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:17,261 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-02 22:31:17,446 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:17,446 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:17,447 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:17,447 INFO  L85        PathProgramCache]: Analyzing trace with hash -384634916, now seen corresponding path program 1 times
[2024-11-02 22:31:17,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:17,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772736694]
[2024-11-02 22:31:17,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:17,448 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:17,448 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:17,450 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:17,450 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-02 22:31:17,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:17,614 INFO  L255         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:17,620 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:17,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-02 22:31:17,824 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:17,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-02 22:31:17,950 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:17,950 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772736694]
[2024-11-02 22:31:17,950 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [772736694] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:31:17,951 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:31:17,951 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-02 22:31:17,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553946860]
[2024-11-02 22:31:17,951 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:31:17,955 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-02 22:31:17,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:17,956 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-02 22:31:17,957 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-02 22:31:17,958 INFO  L87              Difference]: Start difference. First operand 49 states and 71 transitions. Second operand  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-02 22:31:18,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:18,302 INFO  L93              Difference]: Finished difference Result 142 states and 208 transitions.
[2024-11-02 22:31:18,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-02 22:31:18,308 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 87
[2024-11-02 22:31:18,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:18,311 INFO  L225             Difference]: With dead ends: 142
[2024-11-02 22:31:18,311 INFO  L226             Difference]: Without dead ends: 96
[2024-11-02 22:31:18,312 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-02 22:31:18,313 INFO  L432           NwaCegarLoop]: 68 mSDtfsCounter, 67 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-02 22:31:18,314 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 322 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-02 22:31:18,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2024-11-02 22:31:18,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75.
[2024-11-02 22:31:18,340 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 75 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-02 22:31:18,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions.
[2024-11-02 22:31:18,342 INFO  L78                 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 87
[2024-11-02 22:31:18,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:18,343 INFO  L471      AbstractCegarLoop]: Abstraction has 75 states and 108 transitions.
[2024-11-02 22:31:18,343 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-02 22:31:18,343 INFO  L276                IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions.
[2024-11-02 22:31:18,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2024-11-02 22:31:18,346 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:18,346 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:18,368 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-02 22:31:18,547 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:18,548 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:18,548 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:18,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 734981921, now seen corresponding path program 1 times
[2024-11-02 22:31:18,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:18,549 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045803378]
[2024-11-02 22:31:18,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:18,549 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:18,549 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:18,552 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:18,553 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-02 22:31:18,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:18,671 INFO  L255         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:18,680 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:19,149 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-02 22:31:19,150 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:19,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-02 22:31:19,292 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:19,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045803378]
[2024-11-02 22:31:19,292 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1045803378] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:31:19,293 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:31:19,293 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-02 22:31:19,293 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933376410]
[2024-11-02 22:31:19,293 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:31:19,294 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 22:31:19,294 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:19,294 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 22:31:19,295 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-02 22:31:19,295 INFO  L87              Difference]: Start difference. First operand 75 states and 108 transitions. Second operand  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-02 22:31:19,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:19,912 INFO  L93              Difference]: Finished difference Result 211 states and 311 transitions.
[2024-11-02 22:31:19,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-02 22:31:19,917 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 88
[2024-11-02 22:31:19,918 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:19,920 INFO  L225             Difference]: With dead ends: 211
[2024-11-02 22:31:19,920 INFO  L226             Difference]: Without dead ends: 165
[2024-11-02 22:31:19,921 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2024-11-02 22:31:19,922 INFO  L432           NwaCegarLoop]: 113 mSDtfsCounter, 160 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-02 22:31:19,922 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 357 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-02 22:31:19,924 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2024-11-02 22:31:19,954 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119.
[2024-11-02 22:31:19,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 119 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 79 states have internal predecessors, (102), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-02 22:31:19,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions.
[2024-11-02 22:31:19,956 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 88
[2024-11-02 22:31:19,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:19,957 INFO  L471      AbstractCegarLoop]: Abstraction has 119 states and 174 transitions.
[2024-11-02 22:31:19,957 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-02 22:31:19,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions.
[2024-11-02 22:31:19,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2024-11-02 22:31:19,958 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:19,959 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:19,979 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-02 22:31:20,162 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:20,163 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:20,163 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:20,164 INFO  L85        PathProgramCache]: Analyzing trace with hash -544881757, now seen corresponding path program 1 times
[2024-11-02 22:31:20,164 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:20,164 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165482402]
[2024-11-02 22:31:20,164 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:20,164 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:20,164 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:20,166 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:20,167 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-02 22:31:20,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:20,262 INFO  L255         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:20,265 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:20,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2024-11-02 22:31:20,459 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:20,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked.
[2024-11-02 22:31:20,672 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:20,672 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165482402]
[2024-11-02 22:31:20,672 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [165482402] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-02 22:31:20,672 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-02 22:31:20,672 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13
[2024-11-02 22:31:20,672 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134212128]
[2024-11-02 22:31:20,672 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-02 22:31:20,673 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-02 22:31:20,673 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:20,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-02 22:31:20,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2024-11-02 22:31:20,677 INFO  L87              Difference]: Start difference. First operand 119 states and 174 transitions. Second operand  has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)
[2024-11-02 22:31:21,400 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:21,401 INFO  L93              Difference]: Finished difference Result 276 states and 372 transitions.
[2024-11-02 22:31:21,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2024-11-02 22:31:21,401 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88
[2024-11-02 22:31:21,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:21,404 INFO  L225             Difference]: With dead ends: 276
[2024-11-02 22:31:21,404 INFO  L226             Difference]: Without dead ends: 230
[2024-11-02 22:31:21,405 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056
[2024-11-02 22:31:21,406 INFO  L432           NwaCegarLoop]: 89 mSDtfsCounter, 205 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-02 22:31:21,407 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 267 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-02 22:31:21,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 230 states.
[2024-11-02 22:31:21,448 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 204.
[2024-11-02 22:31:21,449 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 204 states, 143 states have (on average 1.2657342657342658) internal successors, (181), 143 states have internal predecessors, (181), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-02 22:31:21,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 277 transitions.
[2024-11-02 22:31:21,451 INFO  L78                 Accepts]: Start accepts. Automaton has 204 states and 277 transitions. Word has length 88
[2024-11-02 22:31:21,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:21,451 INFO  L471      AbstractCegarLoop]: Abstraction has 204 states and 277 transitions.
[2024-11-02 22:31:21,452 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)
[2024-11-02 22:31:21,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 204 states and 277 transitions.
[2024-11-02 22:31:21,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2024-11-02 22:31:21,453 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:21,453 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:21,475 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-02 22:31:21,657 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:21,658 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:21,658 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:21,658 INFO  L85        PathProgramCache]: Analyzing trace with hash -1555999007, now seen corresponding path program 1 times
[2024-11-02 22:31:21,659 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:21,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878554174]
[2024-11-02 22:31:21,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:21,659 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:21,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:21,661 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:21,662 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-02 22:31:21,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:21,768 INFO  L255         TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:21,771 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:22,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2024-11-02 22:31:22,253 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:24,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2024-11-02 22:31:24,698 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:24,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878554174]
[2024-11-02 22:31:24,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1878554174] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-02 22:31:24,699 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-02 22:31:24,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14
[2024-11-02 22:31:24,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303248101]
[2024-11-02 22:31:24,700 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-02 22:31:24,700 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-02 22:31:24,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:24,701 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-02 22:31:24,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2024-11-02 22:31:24,702 INFO  L87              Difference]: Start difference. First operand 204 states and 277 transitions. Second operand  has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24)
[2024-11-02 22:31:41,017 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:41,017 INFO  L93              Difference]: Finished difference Result 851 states and 1129 transitions.
[2024-11-02 22:31:41,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2024-11-02 22:31:41,030 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 88
[2024-11-02 22:31:41,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:41,035 INFO  L225             Difference]: With dead ends: 851
[2024-11-02 22:31:41,035 INFO  L226             Difference]: Without dead ends: 690
[2024-11-02 22:31:41,039 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812
[2024-11-02 22:31:41,039 INFO  L432           NwaCegarLoop]: 60 mSDtfsCounter, 337 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 139 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time
[2024-11-02 22:31:41,040 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 392 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 370 Invalid, 6 Unknown, 0 Unchecked, 11.2s Time]
[2024-11-02 22:31:41,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 690 states.
[2024-11-02 22:31:41,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 593.
[2024-11-02 22:31:41,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 593 states, 429 states have (on average 1.2610722610722611) internal successors, (541), 432 states have internal predecessors, (541), 126 states have call successors, (126), 37 states have call predecessors, (126), 37 states have return successors, (126), 123 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-02 22:31:41,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 793 transitions.
[2024-11-02 22:31:41,122 INFO  L78                 Accepts]: Start accepts. Automaton has 593 states and 793 transitions. Word has length 88
[2024-11-02 22:31:41,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:41,125 INFO  L471      AbstractCegarLoop]: Abstraction has 593 states and 793 transitions.
[2024-11-02 22:31:41,125 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24)
[2024-11-02 22:31:41,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 593 states and 793 transitions.
[2024-11-02 22:31:41,130 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2024-11-02 22:31:41,130 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:41,130 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:41,152 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-02 22:31:41,330 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:41,331 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:41,331 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:41,332 INFO  L85        PathProgramCache]: Analyzing trace with hash 546265619, now seen corresponding path program 1 times
[2024-11-02 22:31:41,332 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:41,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099731637]
[2024-11-02 22:31:41,332 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:41,332 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:41,332 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:41,333 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:41,334 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-02 22:31:41,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:41,430 INFO  L255         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:41,433 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:31:41,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2024-11-02 22:31:41,865 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:31:41,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-02 22:31:41,966 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:31:41,966 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099731637]
[2024-11-02 22:31:41,966 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1099731637] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:31:41,967 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:31:41,967 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8
[2024-11-02 22:31:41,967 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163222611]
[2024-11-02 22:31:41,967 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:31:41,967 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-02 22:31:41,967 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:31:41,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-02 22:31:41,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-02 22:31:41,968 INFO  L87              Difference]: Start difference. First operand 593 states and 793 transitions. Second operand  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-02 22:31:42,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:31:42,146 INFO  L93              Difference]: Finished difference Result 1135 states and 1522 transitions.
[2024-11-02 22:31:42,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-02 22:31:42,146 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 89
[2024-11-02 22:31:42,147 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:31:42,155 INFO  L225             Difference]: With dead ends: 1135
[2024-11-02 22:31:42,155 INFO  L226             Difference]: Without dead ends: 593
[2024-11-02 22:31:42,158 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-02 22:31:42,159 INFO  L432           NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-02 22:31:42,159 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-02 22:31:42,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 593 states.
[2024-11-02 22:31:42,238 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593.
[2024-11-02 22:31:42,240 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 593 states, 429 states have (on average 1.2284382284382285) internal successors, (527), 432 states have internal predecessors, (527), 126 states have call successors, (126), 37 states have call predecessors, (126), 37 states have return successors, (126), 123 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-02 22:31:42,243 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 779 transitions.
[2024-11-02 22:31:42,244 INFO  L78                 Accepts]: Start accepts. Automaton has 593 states and 779 transitions. Word has length 89
[2024-11-02 22:31:42,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:31:42,245 INFO  L471      AbstractCegarLoop]: Abstraction has 593 states and 779 transitions.
[2024-11-02 22:31:42,245 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-02 22:31:42,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 593 states and 779 transitions.
[2024-11-02 22:31:42,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2024-11-02 22:31:42,246 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:31:42,246 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:31:42,265 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-02 22:31:42,447 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:42,447 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:31:42,448 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:31:42,448 INFO  L85        PathProgramCache]: Analyzing trace with hash 1226323989, now seen corresponding path program 1 times
[2024-11-02 22:31:42,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:31:42,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570378641]
[2024-11-02 22:31:42,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:31:42,448 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:31:42,449 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:31:42,450 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:31:42,450 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-02 22:31:42,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:31:42,540 INFO  L255         TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-11-02 22:31:42,544 INFO  L278         TraceCheckSpWp]: Computing forward predicates...