/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-68.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:57:00,156 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:57:00,238 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 01:57:00,246 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:57:00,247 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:57:00,278 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:57:00,278 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:57:00,279 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:57:00,280 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:57:00,281 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:57:00,281 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:57:00,282 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:57:00,282 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:57:00,282 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:57:00,283 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:57:00,283 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:57:00,283 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:57:00,284 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:57:00,287 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:57:00,287 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:57:00,287 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:57:00,288 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:57:00,289 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:57:00,289 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:57:00,289 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:57:00,289 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:57:00,290 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:57:00,290 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:57:00,290 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:57:00,291 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:57:00,291 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:57:00,291 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:57:00,291 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:57:00,292 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:57:00,292 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:57:00,296 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:57:00,297 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:57:00,297 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:57:00,297 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:57:00,297 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:00,298 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:57:00,299 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:57:00,299 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:57:00,299 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:57:00,300 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:00,509 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:57:00,534 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:57:00,536 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:57:00,537 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:57:00,538 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:57:00,539 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i
[2024-11-03 01:57:01,999 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:57:02,187 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:57:02,188 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i
[2024-11-03 01:57:02,197 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e0a738c6/36bc23fab5e444d9bddf1516cb6eecfd/FLAG43deead2f
[2024-11-03 01:57:02,210 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e0a738c6/36bc23fab5e444d9bddf1516cb6eecfd
[2024-11-03 01:57:02,212 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:57:02,213 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:57:02,214 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:57:02,215 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:57:02,218 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:57:02,219 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,220 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427327c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02, skipping insertion in model container
[2024-11-03 01:57:02,220 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,243 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:57:02,409 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-68.i[915,928]
[2024-11-03 01:57:02,469 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:57:02,485 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:57:02,497 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-68.i[915,928]
[2024-11-03 01:57:02,526 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:57:02,544 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:57:02,544 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02 WrapperNode
[2024-11-03 01:57:02,544 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:57:02,545 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:57:02,545 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:57:02,545 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:57:02,549 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,558 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,581 INFO  L138                Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111
[2024-11-03 01:57:02,585 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:57:02,586 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:57:02,586 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:57:02,586 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:57:02,595 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,595 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,598 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,609 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 01:57:02,609 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,610 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,619 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,623 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,630 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,632 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,641 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:57:02,642 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:57:02,642 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:57:02,642 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:57:02,646 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (1/1) ...
[2024-11-03 01:57:02,651 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:57:02,662 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:57:02,680 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 01:57:02,687 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 01:57:02,711 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:57:02,711 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:57:02,711 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:57:02,712 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:57:02,712 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:57:02,712 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:57:02,799 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:57:02,802 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:57:03,453 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-03 01:57:03,453 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:57:03,469 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:57:03,472 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:57:03,473 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:03 BoogieIcfgContainer
[2024-11-03 01:57:03,473 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:57:03,476 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:57:03,476 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:57:03,479 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:57:03,479 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:02" (1/3) ...
[2024-11-03 01:57:03,480 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0593be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:03, skipping insertion in model container
[2024-11-03 01:57:03,480 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:02" (2/3) ...
[2024-11-03 01:57:03,480 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0593be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:03, skipping insertion in model container
[2024-11-03 01:57:03,481 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:03" (3/3) ...
[2024-11-03 01:57:03,482 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-68.i
[2024-11-03 01:57:03,498 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:57:03,498 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:57:03,549 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:57:03,554 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;@7399447d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:57:03,554 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:57:03,558 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 49 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 01:57:03,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:57:03,566 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:57:03,566 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:57:03,566 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:57:03,570 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:57:03,570 INFO  L85        PathProgramCache]: Analyzing trace with hash 518846006, now seen corresponding path program 1 times
[2024-11-03 01:57:03,576 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:57:03,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339707243]
[2024-11-03 01:57:03,577 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:57:03,579 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:03,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:57:03,581 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 01:57:03,582 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 01:57:03,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:57:03,843 INFO  L255         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:57:03,852 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:57:03,882 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 01:57:03,882 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:57:03,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 01:57:03,977 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:57:03,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339707243]
[2024-11-03 01:57:03,978 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [339707243] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:57:03,978 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:57:03,979 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:57:03,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628943605]
[2024-11-03 01:57:03,982 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:57:03,986 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:57:03,986 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:57:04,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:57:04,011 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:57:04,014 INFO  L87              Difference]: Start difference. First operand  has 49 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:57:04,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:57:04,043 INFO  L93              Difference]: Finished difference Result 91 states and 146 transitions.
[2024-11-03 01:57:04,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:57:04,046 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, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75
[2024-11-03 01:57:04,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:57:04,054 INFO  L225             Difference]: With dead ends: 91
[2024-11-03 01:57:04,054 INFO  L226             Difference]: Without dead ends: 45
[2024-11-03 01:57:04,058 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 01:57:04,063 INFO  L432           NwaCegarLoop]: 64 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, 64 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 01:57:04,064 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:57:04,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2024-11-03 01:57:04,100 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2024-11-03 01:57:04,101 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 01:57:04,103 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions.
[2024-11-03 01:57:04,143 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 75
[2024-11-03 01:57:04,144 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:57:04,144 INFO  L471      AbstractCegarLoop]: Abstraction has 45 states and 64 transitions.
[2024-11-03 01:57:04,144 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, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:57:04,144 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions.
[2024-11-03 01:57:04,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:57:04,150 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:57:04,150 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:57:04,157 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 01:57:04,350 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 01:57:04,351 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:57:04,352 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:57:04,352 INFO  L85        PathProgramCache]: Analyzing trace with hash -283092814, now seen corresponding path program 1 times
[2024-11-03 01:57:04,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:57:04,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363332337]
[2024-11-03 01:57:04,353 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:57:04,353 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:04,353 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:57:04,356 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 01:57:04,357 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 01:57:04,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:57:04,784 INFO  L255         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-03 01:57:04,793 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:57:05,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:57:05,134 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:57:05,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:57:05,324 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:57:05,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363332337]
[2024-11-03 01:57:05,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [363332337] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:57:05,325 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:57:05,325 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12
[2024-11-03 01:57:05,325 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959688993]
[2024-11-03 01:57:05,325 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:57:05,329 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-03 01:57:05,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:57:05,330 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-03 01:57:05,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2024-11-03 01:57:05,332 INFO  L87              Difference]: Start difference. First operand 45 states and 64 transitions. Second operand  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 01:57:06,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:57:06,682 INFO  L93              Difference]: Finished difference Result 254 states and 361 transitions.
[2024-11-03 01:57:06,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-03 01:57:06,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 75
[2024-11-03 01:57:06,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:57:06,687 INFO  L225             Difference]: With dead ends: 254
[2024-11-03 01:57:06,687 INFO  L226             Difference]: Without dead ends: 212
[2024-11-03 01:57:06,688 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420
[2024-11-03 01:57:06,689 INFO  L432           NwaCegarLoop]: 92 mSDtfsCounter, 402 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-03 01:57:06,690 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 445 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-03 01:57:06,691 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2024-11-03 01:57:06,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 107.
[2024-11-03 01:57:06,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107 states, 75 states have (on average 1.32) internal successors, (99), 76 states have internal predecessors, (99), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-03 01:57:06,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions.
[2024-11-03 01:57:06,724 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 75
[2024-11-03 01:57:06,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:57:06,725 INFO  L471      AbstractCegarLoop]: Abstraction has 107 states and 155 transitions.
[2024-11-03 01:57:06,725 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 01:57:06,725 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions.
[2024-11-03 01:57:06,727 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:57:06,727 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:57:06,727 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:57:06,734 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 01:57:06,928 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 01:57:06,929 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:57:06,929 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:57:06,929 INFO  L85        PathProgramCache]: Analyzing trace with hash 417971764, now seen corresponding path program 1 times
[2024-11-03 01:57:06,929 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:57:06,930 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356463177]
[2024-11-03 01:57:06,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:57:06,930 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:06,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:57:06,932 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 01:57:06,934 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 01:57:07,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:57:07,406 INFO  L255         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-03 01:57:07,409 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:57:07,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:57:07,479 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:57:07,560 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 01:57:07,561 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:57:07,561 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356463177]
[2024-11-03 01:57:07,561 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1356463177] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:57:07,561 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:57:07,561 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-03 01:57:07,561 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004436035]
[2024-11-03 01:57:07,562 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:57:07,562 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 01:57:07,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:57:07,563 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 01:57:07,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 01:57:07,565 INFO  L87              Difference]: Start difference. First operand 107 states and 155 transitions. Second operand  has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:57:07,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:57:07,984 INFO  L93              Difference]: Finished difference Result 179 states and 258 transitions.
[2024-11-03 01:57:07,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 01:57:07,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75
[2024-11-03 01:57:07,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:57:07,994 INFO  L225             Difference]: With dead ends: 179
[2024-11-03 01:57:07,994 INFO  L226             Difference]: Without dead ends: 107
[2024-11-03 01:57:07,995 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 01:57:07,996 INFO  L432           NwaCegarLoop]: 53 mSDtfsCounter, 58 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-03 01:57:07,997 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 157 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-03 01:57:07,997 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-11-03 01:57:08,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2024-11-03 01:57:08,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107 states, 75 states have (on average 1.2933333333333332) internal successors, (97), 76 states have internal predecessors, (97), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-03 01:57:08,038 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions.
[2024-11-03 01:57:08,039 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 75
[2024-11-03 01:57:08,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:57:08,040 INFO  L471      AbstractCegarLoop]: Abstraction has 107 states and 153 transitions.
[2024-11-03 01:57:08,040 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 01:57:08,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions.
[2024-11-03 01:57:08,041 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-03 01:57:08,041 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:57:08,042 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:57:08,049 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 01:57:08,242 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 01:57:08,243 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:57:08,245 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:57:08,245 INFO  L85        PathProgramCache]: Analyzing trace with hash -1279017682, now seen corresponding path program 1 times
[2024-11-03 01:57:08,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:57:08,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663969741]
[2024-11-03 01:57:08,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:57:08,246 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:57:08,246 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:57:08,248 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 01:57:08,249 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 01:57:08,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:57:08,712 INFO  L255         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-03 01:57:08,718 INFO  L278         TraceCheckSpWp]: Computing forward predicates...