/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-90.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 02:00:01,096 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 02:00:01,151 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 02:00:01,159 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 02:00:01,159 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 02:00:01,184 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 02:00:01,185 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 02:00:01,185 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 02:00:01,185 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 02:00:01,186 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 02:00:01,186 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 02:00:01,186 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 02:00:01,186 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 02:00:01,187 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 02:00:01,187 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 02:00:01,188 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 02:00:01,188 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 02:00:01,189 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 02:00:01,189 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 02:00:01,189 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 02:00:01,189 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 02:00:01,191 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 02:00:01,191 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 02:00:01,192 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 02:00:01,193 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 02:00:01,193 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 02:00:01,193 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 02:00:01,193 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 02:00:01,193 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 02:00:01,193 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 02:00:01,194 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 02:00:01,194 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 02:00:01,194 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 02:00:01,194 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 02:00:01,194 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:01,195 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 02:00:01,197 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 02:00:01,197 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 02:00:01,197 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 02:00:01,198 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:01,375 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 02:00:01,393 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 02:00:01,395 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 02:00:01,396 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 02:00:01,397 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 02:00:01,398 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-90.i
[2024-11-03 02:00:02,682 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 02:00:02,831 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 02:00:02,833 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-90.i
[2024-11-03 02:00:02,842 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9c18ffe/44fb648207b04b338645f0887f8bd239/FLAG6cc2538fa
[2024-11-03 02:00:03,245 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9c18ffe/44fb648207b04b338645f0887f8bd239
[2024-11-03 02:00:03,247 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 02:00:03,249 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 02:00:03,251 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 02:00:03,251 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 02:00:03,255 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 02:00:03,256 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,257 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15fd3f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03, skipping insertion in model container
[2024-11-03 02:00:03,257 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,282 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 02:00:03,414 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-90.i[915,928]
[2024-11-03 02:00:03,459 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 02:00:03,469 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 02:00:03,479 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-90.i[915,928]
[2024-11-03 02:00:03,497 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 02:00:03,514 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 02:00:03,514 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03 WrapperNode
[2024-11-03 02:00:03,515 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 02:00:03,516 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 02:00:03,516 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 02:00:03,516 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 02:00:03,522 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,533 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,554 INFO  L138                Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130
[2024-11-03 02:00:03,554 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 02:00:03,555 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 02:00:03,555 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 02:00:03,555 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 02:00:03,563 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,563 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,566 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,583 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 02:00:03,583 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,584 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,593 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,596 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,597 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,598 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,601 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 02:00:03,601 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 02:00:03,602 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 02:00:03,602 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 02:00:03,602 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (1/1) ...
[2024-11-03 02:00:03,610 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 02:00:03,623 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 02:00:03,634 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 02:00:03,636 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 02:00:03,654 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 02:00:03,655 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 02:00:03,655 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 02:00:03,655 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 02:00:03,655 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 02:00:03,656 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 02:00:03,729 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 02:00:03,731 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 02:00:04,578 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-03 02:00:04,579 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 02:00:04,592 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 02:00:04,592 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 02:00:04,592 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:04 BoogieIcfgContainer
[2024-11-03 02:00:04,593 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 02:00:04,594 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 02:00:04,594 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 02:00:04,598 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 02:00:04,598 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:00:03" (1/3) ...
[2024-11-03 02:00:04,599 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd4cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:04, skipping insertion in model container
[2024-11-03 02:00:04,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:03" (2/3) ...
[2024-11-03 02:00:04,599 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd4cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:04, skipping insertion in model container
[2024-11-03 02:00:04,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:04" (3/3) ...
[2024-11-03 02:00:04,601 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-90.i
[2024-11-03 02:00:04,614 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 02:00:04,614 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 02:00:04,662 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 02:00:04,667 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;@5e65b412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 02:00:04,667 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 02:00:04,671 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-03 02:00:04,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2024-11-03 02:00:04,684 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 02:00:04,684 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:04,685 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 02:00:04,690 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 02:00:04,691 INFO  L85        PathProgramCache]: Analyzing trace with hash -1081310934, now seen corresponding path program 1 times
[2024-11-03 02:00:04,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 02:00:04,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984073107]
[2024-11-03 02:00:04,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 02:00:04,701 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:04,702 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 02:00:04,704 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 02:00:04,707 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 02:00:04,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 02:00:04,988 INFO  L255         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 02:00:04,994 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 02:00:05,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked.
[2024-11-03 02:00:05,027 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 02:00:05,157 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked.
[2024-11-03 02:00:05,158 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 02:00:05,158 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984073107]
[2024-11-03 02:00:05,158 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1984073107] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 02:00:05,158 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 02:00:05,159 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 02:00:05,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551360001]
[2024-11-03 02:00:05,161 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 02:00:05,166 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 02:00:05,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 02:00:05,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 02:00:05,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 02:00:05,187 INFO  L87              Difference]: Start difference. First operand  has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18)
[2024-11-03 02:00:05,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 02:00:05,208 INFO  L93              Difference]: Finished difference Result 109 states and 190 transitions.
[2024-11-03 02:00:05,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 02:00:05,210 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115
[2024-11-03 02:00:05,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 02:00:05,216 INFO  L225             Difference]: With dead ends: 109
[2024-11-03 02:00:05,216 INFO  L226             Difference]: Without dead ends: 54
[2024-11-03 02:00:05,218 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 228 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 02:00:05,221 INFO  L432           NwaCegarLoop]: 82 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, 82 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 02:00:05,222 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 02:00:05,244 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-11-03 02:00:05,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2024-11-03 02:00:05,270 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-03 02:00:05,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 82 transitions.
[2024-11-03 02:00:05,273 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 82 transitions. Word has length 115
[2024-11-03 02:00:05,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 02:00:05,275 INFO  L471      AbstractCegarLoop]: Abstraction has 54 states and 82 transitions.
[2024-11-03 02:00:05,275 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18)
[2024-11-03 02:00:05,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 82 transitions.
[2024-11-03 02:00:05,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2024-11-03 02:00:05,277 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 02:00:05,277 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:05,283 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 02:00:05,478 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 02:00:05,478 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 02:00:05,479 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 02:00:05,479 INFO  L85        PathProgramCache]: Analyzing trace with hash -513398942, now seen corresponding path program 1 times
[2024-11-03 02:00:05,479 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 02:00:05,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522905903]
[2024-11-03 02:00:05,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 02:00:05,480 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:05,480 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 02:00:05,484 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 02:00:05,485 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 02:00:06,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 02:00:06,338 INFO  L255         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-03 02:00:06,342 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 02:00:07,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 213 proven. 9 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked.
[2024-11-03 02:00:07,205 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 02:00:09,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked.
[2024-11-03 02:00:09,231 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 02:00:09,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522905903]
[2024-11-03 02:00:09,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [522905903] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 02:00:09,232 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 02:00:09,232 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2024-11-03 02:00:09,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511299501]
[2024-11-03 02:00:09,232 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 02:00:09,233 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-03 02:00:09,233 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 02:00:09,236 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-03 02:00:09,237 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2024-11-03 02:00:09,237 INFO  L87              Difference]: Start difference. First operand 54 states and 82 transitions. Second operand  has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36)
[2024-11-03 02:00:21,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 02:00:21,874 INFO  L93              Difference]: Finished difference Result 224 states and 332 transitions.
[2024-11-03 02:00:21,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2024-11-03 02:00:21,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 115
[2024-11-03 02:00:21,885 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 02:00:21,887 INFO  L225             Difference]: With dead ends: 224
[2024-11-03 02:00:21,887 INFO  L226             Difference]: Without dead ends: 173
[2024-11-03 02:00:21,888 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702
[2024-11-03 02:00:21,889 INFO  L432           NwaCegarLoop]: 52 mSDtfsCounter, 411 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2024-11-03 02:00:21,889 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 209 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2024-11-03 02:00:21,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2024-11-03 02:00:21,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 59.
[2024-11-03 02:00:21,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-03 02:00:21,917 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions.
[2024-11-03 02:00:21,918 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 115
[2024-11-03 02:00:21,919 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 02:00:21,919 INFO  L471      AbstractCegarLoop]: Abstraction has 59 states and 86 transitions.
[2024-11-03 02:00:21,920 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36)
[2024-11-03 02:00:21,920 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions.
[2024-11-03 02:00:21,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2024-11-03 02:00:21,922 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 02:00:21,922 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:21,933 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 02:00:22,122 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 02:00:22,123 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 02:00:22,123 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 02:00:22,124 INFO  L85        PathProgramCache]: Analyzing trace with hash -570657244, now seen corresponding path program 1 times
[2024-11-03 02:00:22,124 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 02:00:22,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70065460]
[2024-11-03 02:00:22,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 02:00:22,124 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:22,124 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 02:00:22,127 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 02:00:22,128 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 02:00:23,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 02:00:23,846 INFO  L255         TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-03 02:00:23,850 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 02:00:24,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 383 proven. 48 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked.
[2024-11-03 02:00:24,462 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 02:00:25,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked.
[2024-11-03 02:00:25,447 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 02:00:25,447 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70065460]
[2024-11-03 02:00:25,447 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [70065460] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 02:00:25,447 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 02:00:25,447 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18
[2024-11-03 02:00:25,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634200139]
[2024-11-03 02:00:25,448 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 02:00:25,448 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-03 02:00:25,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 02:00:25,449 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-03 02:00:25,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306
[2024-11-03 02:00:25,451 INFO  L87              Difference]: Start difference. First operand 59 states and 86 transitions. Second operand  has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36)
[2024-11-03 02:00:27,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 02:00:27,445 INFO  L93              Difference]: Finished difference Result 166 states and 229 transitions.
[2024-11-03 02:00:27,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2024-11-03 02:00:27,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 115
[2024-11-03 02:00:27,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 02:00:27,449 INFO  L225             Difference]: With dead ends: 166
[2024-11-03 02:00:27,449 INFO  L226             Difference]: Without dead ends: 110
[2024-11-03 02:00:27,450 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=501, Invalid=1059, Unknown=0, NotChecked=0, Total=1560
[2024-11-03 02:00:27,454 INFO  L432           NwaCegarLoop]: 58 mSDtfsCounter, 334 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-03 02:00:27,455 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 190 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-03 02:00:27,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2024-11-03 02:00:27,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71.
[2024-11-03 02:00:27,469 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-03 02:00:27,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions.
[2024-11-03 02:00:27,470 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 115
[2024-11-03 02:00:27,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 02:00:27,470 INFO  L471      AbstractCegarLoop]: Abstraction has 71 states and 94 transitions.
[2024-11-03 02:00:27,471 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36)
[2024-11-03 02:00:27,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions.
[2024-11-03 02:00:27,472 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2024-11-03 02:00:27,472 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 02:00:27,472 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:27,484 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 02:00:27,672 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 02:00:27,673 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 02:00:27,673 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 02:00:27,674 INFO  L85        PathProgramCache]: Analyzing trace with hash 109401126, now seen corresponding path program 1 times
[2024-11-03 02:00:27,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 02:00:27,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423123065]
[2024-11-03 02:00:27,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 02:00:27,674 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 02:00:27,674 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 02:00:27,675 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 02:00:27,676 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 02:00:30,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 02:00:30,017 INFO  L255         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-03 02:00:30,022 INFO  L278         TraceCheckSpWp]: Computing forward predicates...