/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_amount50_file-45.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:54:00,730 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:54:00,804 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 01:54:00,809 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:54:00,809 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:54:00,837 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:54:00,838 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:54:00,839 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:54:00,839 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:54:00,841 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:54:00,841 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:54:00,842 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:54:00,842 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:54:00,842 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:54:00,843 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:54:00,843 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:54:00,846 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:54:00,846 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:54:00,847 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:54:00,847 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:54:00,847 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:54:00,848 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:54:00,848 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:54:00,848 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:54:00,848 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:54:00,849 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:54:00,849 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:54:00,849 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:54:00,849 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:54:00,850 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:54:00,850 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:54:00,850 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:54:00,850 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:54:00,851 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:54:00,851 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:54:00,852 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:54:00,853 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:54:00,853 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:54:00,853 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:54:00,853 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:00,854 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:54:00,854 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:54:00,854 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:54:00,854 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:54:00,855 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:01,091 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:54:01,113 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:54:01,116 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:54:01,117 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:54:01,117 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:54:01,119 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-45.i
[2024-11-03 01:54:02,543 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:54:02,725 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:54:02,725 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-45.i
[2024-11-03 01:54:02,735 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab143c81/ab45c36d27154032a81eb914fb780ce5/FLAGb777b4d02
[2024-11-03 01:54:02,750 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab143c81/ab45c36d27154032a81eb914fb780ce5
[2024-11-03 01:54:02,752 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:54:02,753 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:54:02,754 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:54:02,754 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:54:02,759 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:54:02,760 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:02" (1/1) ...
[2024-11-03 01:54:02,761 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfbe72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:02, skipping insertion in model container
[2024-11-03 01:54:02,761 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:02" (1/1) ...
[2024-11-03 01:54:02,786 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:54:02,944 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-45.i[915,928]
[2024-11-03 01:54:02,994 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:54:03,008 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:54:03,018 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-45.i[915,928]
[2024-11-03 01:54:03,040 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:54:03,060 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:54:03,061 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03 WrapperNode
[2024-11-03 01:54:03,061 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:54:03,062 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:54:03,062 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:54:03,062 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:54:03,068 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,077 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,098 INFO  L138                Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118
[2024-11-03 01:54:03,098 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:54:03,099 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:54:03,099 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:54:03,099 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:54:03,116 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,117 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,120 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,130 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-03 01:54:03,131 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,131 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,139 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,143 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,145 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,146 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,149 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:54:03,150 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:54:03,153 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:54:03,153 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:54:03,154 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (1/1) ...
[2024-11-03 01:54:03,159 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:54:03,170 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:54:03,182 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-03 01:54:03,185 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-03 01:54:03,205 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:54:03,205 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:54:03,205 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:54:03,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:54:03,205 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:54:03,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:54:03,272 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:54:03,274 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:54:03,569 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-03 01:54:03,569 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:54:03,581 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:54:03,582 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:54:03,582 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:03 BoogieIcfgContainer
[2024-11-03 01:54:03,582 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:54:03,584 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:54:03,584 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:54:03,587 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:54:03,587 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:02" (1/3) ...
[2024-11-03 01:54:03,588 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614d6a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:03, skipping insertion in model container
[2024-11-03 01:54:03,588 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:03" (2/3) ...
[2024-11-03 01:54:03,588 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614d6a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:03, skipping insertion in model container
[2024-11-03 01:54:03,588 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:03" (3/3) ...
[2024-11-03 01:54:03,589 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-45.i
[2024-11-03 01:54:03,601 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:54:03,601 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:54:03,652 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:54:03,657 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;@69ac794e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:54:03,657 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:54:03,661 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:54:03,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-03 01:54:03,670 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:03,670 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:54:03,671 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:03,675 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:03,675 INFO  L85        PathProgramCache]: Analyzing trace with hash 2077275396, now seen corresponding path program 1 times
[2024-11-03 01:54:03,681 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:03,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292697702]
[2024-11-03 01:54:03,682 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:03,684 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:03,684 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:03,685 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:54:03,687 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 01:54:03,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:03,867 INFO  L255         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:03,893 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:03,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2024-11-03 01:54:03,939 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:04,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2024-11-03 01:54:04,055 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:04,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292697702]
[2024-11-03 01:54:04,056 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1292697702] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:54:04,056 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:54:04,056 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:54:04,059 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885328066]
[2024-11-03 01:54:04,060 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:54:04,064 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:54:04,064 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:04,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:54:04,084 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:54:04,086 INFO  L87              Difference]: Start difference. First operand  has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:04,112 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:04,112 INFO  L93              Difference]: Finished difference Result 107 states and 180 transitions.
[2024-11-03 01:54:04,113 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:54:04,115 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), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107
[2024-11-03 01:54:04,115 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:04,122 INFO  L225             Difference]: With dead ends: 107
[2024-11-03 01:54:04,122 INFO  L226             Difference]: Without dead ends: 53
[2024-11-03 01:54:04,126 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:54:04,130 INFO  L432           NwaCegarLoop]: 78 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, 78 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:54:04,130 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:54:04,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-03 01:54:04,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2024-11-03 01:54:04,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:54:04,161 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 78 transitions.
[2024-11-03 01:54:04,163 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 78 transitions. Word has length 107
[2024-11-03 01:54:04,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:04,163 INFO  L471      AbstractCegarLoop]: Abstraction has 53 states and 78 transitions.
[2024-11-03 01:54:04,164 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), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:04,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 78 transitions.
[2024-11-03 01:54:04,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-03 01:54:04,166 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:04,166 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:54:04,170 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-11-03 01:54:04,367 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:04,368 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:04,368 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:04,369 INFO  L85        PathProgramCache]: Analyzing trace with hash -1761225468, now seen corresponding path program 1 times
[2024-11-03 01:54:04,369 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:04,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46965261]
[2024-11-03 01:54:04,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:04,369 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:04,370 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:04,372 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:54:04,373 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 01:54:04,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:04,495 INFO  L255         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:04,499 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:04,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:54:04,528 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:04,619 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:54:04,620 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:04,620 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46965261]
[2024-11-03 01:54:04,620 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [46965261] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:54:04,620 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:54:04,621 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:54:04,621 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018737916]
[2024-11-03 01:54:04,621 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:54:04,622 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:54:04,623 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:04,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:54:04,623 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:54:04,624 INFO  L87              Difference]: Start difference. First operand 53 states and 78 transitions. Second operand  has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:04,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:04,701 INFO  L93              Difference]: Finished difference Result 150 states and 222 transitions.
[2024-11-03 01:54:04,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:54:04,704 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107
[2024-11-03 01:54:04,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:04,707 INFO  L225             Difference]: With dead ends: 150
[2024-11-03 01:54:04,707 INFO  L226             Difference]: Without dead ends: 100
[2024-11-03 01:54:04,708 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:54:04,709 INFO  L432           NwaCegarLoop]: 86 mSDtfsCounter, 67 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-03 01:54:04,710 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-03 01:54:04,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-11-03 01:54:04,727 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98.
[2024-11-03 01:54:04,727 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 98 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 01:54:04,729 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions.
[2024-11-03 01:54:04,730 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 107
[2024-11-03 01:54:04,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:04,731 INFO  L471      AbstractCegarLoop]: Abstraction has 98 states and 143 transitions.
[2024-11-03 01:54:04,731 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:04,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions.
[2024-11-03 01:54:04,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2024-11-03 01:54:04,732 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:04,733 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:54:04,735 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-03 01:54:04,934 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 01:54:04,935 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:04,935 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:04,936 INFO  L85        PathProgramCache]: Analyzing trace with hash -1716052354, now seen corresponding path program 1 times
[2024-11-03 01:54:04,936 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:04,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075671171]
[2024-11-03 01:54:04,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:04,937 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:04,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:04,940 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 01:54:04,941 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 01:54:05,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:05,136 INFO  L255         TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:05,140 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:05,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2024-11-03 01:54:05,303 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:05,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2024-11-03 01:54:05,512 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:05,513 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075671171]
[2024-11-03 01:54:05,513 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1075671171] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:54:05,513 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:54:05,513 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2024-11-03 01:54:05,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172336842]
[2024-11-03 01:54:05,514 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:54:05,516 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-03 01:54:05,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:05,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-03 01:54:05,517 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2024-11-03 01:54:05,517 INFO  L87              Difference]: Start difference. First operand 98 states and 143 transitions. Second operand  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2024-11-03 01:54:05,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:05,872 INFO  L93              Difference]: Finished difference Result 158 states and 226 transitions.
[2024-11-03 01:54:05,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 01:54:05,875 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108
[2024-11-03 01:54:05,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:05,877 INFO  L225             Difference]: With dead ends: 158
[2024-11-03 01:54:05,877 INFO  L226             Difference]: Without dead ends: 63
[2024-11-03 01:54:05,878 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210
[2024-11-03 01:54:05,880 INFO  L432           NwaCegarLoop]: 50 mSDtfsCounter, 142 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:54:05,880 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 117 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:54:05,881 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-03 01:54:05,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56.
[2024-11-03 01:54:05,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:54:05,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions.
[2024-11-03 01:54:05,894 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 108
[2024-11-03 01:54:05,895 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:05,895 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 76 transitions.
[2024-11-03 01:54:05,895 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2024-11-03 01:54:05,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions.
[2024-11-03 01:54:05,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2024-11-03 01:54:05,898 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:05,899 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:54:05,903 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 01:54:06,099 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 01:54:06,100 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:06,100 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:06,101 INFO  L85        PathProgramCache]: Analyzing trace with hash 831097206, now seen corresponding path program 1 times
[2024-11-03 01:54:06,101 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:06,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506812932]
[2024-11-03 01:54:06,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:06,101 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:06,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:06,105 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 01:54:06,105 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 01:54:06,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:06,285 INFO  L255         TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:06,289 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:06,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:54:06,404 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:06,499 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-03 01:54:06,499 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:06,500 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506812932]
[2024-11-03 01:54:06,500 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [506812932] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:54:06,500 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:54:06,500 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 6
[2024-11-03 01:54:06,500 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046503592]
[2024-11-03 01:54:06,500 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:54:06,504 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 01:54:06,504 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:06,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 01:54:06,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 01:54:06,506 INFO  L87              Difference]: Start difference. First operand 56 states and 76 transitions. Second operand  has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:06,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:06,755 INFO  L93              Difference]: Finished difference Result 158 states and 215 transitions.
[2024-11-03 01:54:06,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-03 01:54:06,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108
[2024-11-03 01:54:06,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:06,758 INFO  L225             Difference]: With dead ends: 158
[2024-11-03 01:54:06,758 INFO  L226             Difference]: Without dead ends: 105
[2024-11-03 01:54:06,759 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 01:54:06,760 INFO  L432           NwaCegarLoop]: 115 mSDtfsCounter, 54 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:54:06,760 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 360 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:54:06,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2024-11-03 01:54:06,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 56.
[2024-11-03 01:54:06,773 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:54:06,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions.
[2024-11-03 01:54:06,775 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 108
[2024-11-03 01:54:06,775 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:06,775 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 75 transitions.
[2024-11-03 01:54:06,775 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-03 01:54:06,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions.
[2024-11-03 01:54:06,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2024-11-03 01:54:06,777 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:06,777 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:54:06,782 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-11-03 01:54:06,981 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:06,982 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:06,982 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:06,982 INFO  L85        PathProgramCache]: Analyzing trace with hash -242274181, now seen corresponding path program 1 times
[2024-11-03 01:54:06,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:06,983 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849167620]
[2024-11-03 01:54:06,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:06,983 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:06,983 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:06,984 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:54:06,985 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 01:54:07,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:07,168 INFO  L255         TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:07,176 INFO  L278         TraceCheckSpWp]: Computing forward predicates...