/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 09:54:04,391 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 09:54:04,472 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-01 09:54:04,481 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 09:54:04,481 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 09:54:04,511 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 09:54:04,512 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 09:54:04,512 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 09:54:04,513 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 09:54:04,513 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 09:54:04,514 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 09:54:04,514 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 09:54:04,514 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 09:54:04,515 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 09:54:04,515 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 09:54:04,516 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 09:54:04,517 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 09:54:04,519 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 09:54:04,519 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 09:54:04,519 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 09:54:04,519 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 09:54:04,519 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 09:54:04,520 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 09:54:04,520 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 09:54:04,520 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 09:54:04,520 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 09:54:04,520 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 09:54:04,521 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 09:54:04,521 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 09:54:04,521 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 09:54:04,522 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 09:54:04,522 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 09:54:04,523 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 09:54:04,523 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 09:54:04,523 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 09:54:04,523 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 09:54:04,523 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 09:54:04,523 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 09:54:04,524 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 09:54:04,524 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 09:54:04,524 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 09:54:04,525 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 09:54:04,525 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:04,818 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 09:54:04,836 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 09:54:04,838 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 09:54:04,839 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 09:54:04,839 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 09:54:04,840 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c
[2024-11-01 09:54:06,256 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 09:54:06,665 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 09:54:06,665 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c
[2024-11-01 09:54:06,692 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492ef4c87/0133780f1ad54b5cbf93b792791306cc/FLAGac8c333e5
[2024-11-01 09:54:06,711 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492ef4c87/0133780f1ad54b5cbf93b792791306cc
[2024-11-01 09:54:06,713 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 09:54:06,715 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 09:54:06,717 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 09:54:06,717 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 09:54:06,721 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 09:54:06,721 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:54:06" (1/1) ...
[2024-11-01 09:54:06,722 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bb0444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:06, skipping insertion in model container
[2024-11-01 09:54:06,722 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:54:06" (1/1) ...
[2024-11-01 09:54:06,772 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 09:54:06,971 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c[1262,1275]
[2024-11-01 09:54:07,257 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 09:54:07,274 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 09:54:07,317 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c[1262,1275]
[2024-11-01 09:54:07,450 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 09:54:07,466 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 09:54:07,469 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07 WrapperNode
[2024-11-01 09:54:07,469 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 09:54:07,470 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 09:54:07,470 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 09:54:07,470 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 09:54:07,476 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,514 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,602 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517
[2024-11-01 09:54:07,603 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 09:54:07,603 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 09:54:07,604 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 09:54:07,604 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 09:54:07,615 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,616 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,633 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,679 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].
[2024-11-01 09:54:07,680 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,681 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,776 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,780 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,786 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,795 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,809 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 09:54:07,810 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 09:54:07,810 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 09:54:07,810 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 09:54:07,811 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (1/1) ...
[2024-11-01 09:54:07,815 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 09:54:07,823 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 09:54:07,835 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)
[2024-11-01 09:54:07,841 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
[2024-11-01 09:54:07,862 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 09:54:07,863 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 09:54:07,863 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 09:54:07,863 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 09:54:08,186 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 09:54:08,217 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 09:54:09,379 INFO  L?                        ?]: Removed 208 outVars from TransFormulas that were not future-live.
[2024-11-01 09:54:09,380 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 09:54:09,393 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 09:54:09,393 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 09:54:09,394 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:54:09 BoogieIcfgContainer
[2024-11-01 09:54:09,394 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 09:54:09,401 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 09:54:09,401 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 09:54:09,403 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 09:54:09,403 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:54:06" (1/3) ...
[2024-11-01 09:54:09,404 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673efa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:54:09, skipping insertion in model container
[2024-11-01 09:54:09,404 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:54:07" (2/3) ...
[2024-11-01 09:54:09,404 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673efa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:54:09, skipping insertion in model container
[2024-11-01 09:54:09,405 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:54:09" (3/3) ...
[2024-11-01 09:54:09,409 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c
[2024-11-01 09:54:09,421 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 09:54:09,421 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 09:54:09,467 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 09:54:09,471 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;@334dbcda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 09:54:09,471 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 09:54:09,474 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:09,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-01 09:54:09,478 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:09,478 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-01 09:54:09,479 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:09,483 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:09,483 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-01 09:54:09,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:09,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624635535]
[2024-11-01 09:54:09,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:09,491 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:09,491 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:09,497 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)
[2024-11-01 09:54:09,511 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-01 09:54:10,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:10,132 INFO  L255         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:10,147 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:10,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:10,330 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:10,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:10,453 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:10,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624635535]
[2024-11-01 09:54:10,454 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1624635535] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 09:54:10,454 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 09:54:10,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 09:54:10,456 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783055786]
[2024-11-01 09:54:10,456 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 09:54:10,460 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 09:54:10,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:10,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 09:54:10,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 09:54:10,484 INFO  L87              Difference]: Start difference. First operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:10,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:10,579 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-01 09:54:10,581 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 09:54:10,582 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-01 09:54:10,582 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:10,587 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 09:54:10,588 INFO  L226             Difference]: Without dead ends: 10
[2024-11-01 09:54:10,590 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-01 09:54:10,594 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:10,595 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-01 09:54:10,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-01 09:54:10,614 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-01 09:54:10,615 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:10,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-01 09:54:10,617 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-01 09:54:10,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:10,617 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-01 09:54:10,617 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:10,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-01 09:54:10,618 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-01 09:54:10,618 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:10,618 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-01 09:54:10,627 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-11-01 09:54:10,818 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
[2024-11-01 09:54:10,819 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:10,819 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:10,820 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-01 09:54:10,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:10,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219935801]
[2024-11-01 09:54:10,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:10,820 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:10,820 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:10,822 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)
[2024-11-01 09:54:10,824 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-01 09:54:11,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:11,791 INFO  L255         TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:11,803 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:11,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:11,950 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:12,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:12,108 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:12,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219935801]
[2024-11-01 09:54:12,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1219935801] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 09:54:12,108 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 09:54:12,108 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-11-01 09:54:12,108 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086905864]
[2024-11-01 09:54:12,108 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 09:54:12,110 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-01 09:54:12,110 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:12,110 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-01 09:54:12,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-01 09:54:12,111 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:12,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:12,252 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-01 09:54:12,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-01 09:54:12,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-01 09:54:12,252 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:12,253 INFO  L225             Difference]: With dead ends: 15
[2024-11-01 09:54:12,253 INFO  L226             Difference]: Without dead ends: 13
[2024-11-01 09:54:12,253 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2024-11-01 09:54:12,254 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:12,254 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-01 09:54:12,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-01 09:54:12,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2024-11-01 09:54:12,257 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:12,257 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-11-01 09:54:12,257 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8
[2024-11-01 09:54:12,257 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:12,257 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-11-01 09:54:12,257 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:12,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-11-01 09:54:12,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-01 09:54:12,258 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:12,258 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-11-01 09:54:12,269 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-01 09:54:12,458 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
[2024-11-01 09:54:12,459 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:12,460 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:12,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times
[2024-11-01 09:54:12,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:12,460 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961676100]
[2024-11-01 09:54:12,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:12,461 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:12,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:12,465 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)
[2024-11-01 09:54:12,467 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-01 09:54:13,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:13,763 INFO  L255         TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:13,777 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:13,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:13,873 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:14,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:14,139 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:14,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961676100]
[2024-11-01 09:54:14,139 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [961676100] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 09:54:14,139 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 09:54:14,139 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-01 09:54:14,139 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583725012]
[2024-11-01 09:54:14,139 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 09:54:14,140 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-01 09:54:14,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:14,140 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-01 09:54:14,141 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2024-11-01 09:54:14,141 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:14,417 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:14,417 INFO  L93              Difference]: Finished difference Result 18 states and 18 transitions.
[2024-11-01 09:54:14,422 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-01 09:54:14,423 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2024-11-01 09:54:14,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:14,423 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 09:54:14,423 INFO  L226             Difference]: Without dead ends: 16
[2024-11-01 09:54:14,424 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2024-11-01 09:54:14,424 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:14,425 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-01 09:54:14,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-01 09:54:14,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-01 09:54:14,427 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:14,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-01 09:54:14,427 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11
[2024-11-01 09:54:14,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:14,427 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-01 09:54:14,428 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:14,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-01 09:54:14,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-01 09:54:14,428 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:14,428 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-01 09:54:14,459 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-01 09:54:14,629 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
[2024-11-01 09:54:14,629 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:14,632 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:14,632 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times
[2024-11-01 09:54:14,632 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:14,632 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258564104]
[2024-11-01 09:54:14,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:14,632 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:14,633 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:14,634 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)
[2024-11-01 09:54:14,636 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-01 09:54:16,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:16,621 INFO  L255         TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:16,640 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:16,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:16,798 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:17,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:17,217 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:17,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258564104]
[2024-11-01 09:54:17,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1258564104] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 09:54:17,218 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 09:54:17,218 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-01 09:54:17,218 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850667097]
[2024-11-01 09:54:17,218 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 09:54:17,218 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-01 09:54:17,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:17,219 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-01 09:54:17,219 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2024-11-01 09:54:17,220 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:17,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:17,516 INFO  L93              Difference]: Finished difference Result 21 states and 21 transitions.
[2024-11-01 09:54:17,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-01 09:54:17,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-01 09:54:17,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:17,517 INFO  L225             Difference]: With dead ends: 21
[2024-11-01 09:54:17,517 INFO  L226             Difference]: Without dead ends: 19
[2024-11-01 09:54:17,518 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342
[2024-11-01 09:54:17,519 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:17,519 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-01 09:54:17,519 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-01 09:54:17,521 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2024-11-01 09:54:17,521 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:17,522 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2024-11-01 09:54:17,522 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14
[2024-11-01 09:54:17,522 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:17,522 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2024-11-01 09:54:17,522 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:17,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2024-11-01 09:54:17,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-01 09:54:17,523 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:17,523 INFO  L215           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-11-01 09:54:17,540 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-01 09:54:17,726 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:17,727 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:17,727 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:17,727 INFO  L85        PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 4 times
[2024-11-01 09:54:17,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:17,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859899328]
[2024-11-01 09:54:17,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:17,728 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:17,728 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:17,730 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 09:54:17,732 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-01 09:54:19,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:19,991 INFO  L255         TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:20,010 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:20,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:20,190 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:20,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:20,631 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:20,632 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859899328]
[2024-11-01 09:54:20,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1859899328] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 09:54:20,632 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 09:54:20,632 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2024-11-01 09:54:20,632 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8376771]
[2024-11-01 09:54:20,632 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 09:54:20,632 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-01 09:54:20,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:20,633 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-01 09:54:20,633 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2024-11-01 09:54:20,634 INFO  L87              Difference]: Start difference. First operand 18 states and 18 transitions. Second operand  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:21,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:21,059 INFO  L93              Difference]: Finished difference Result 24 states and 24 transitions.
[2024-11-01 09:54:21,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-11-01 09:54:21,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-01 09:54:21,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:21,060 INFO  L225             Difference]: With dead ends: 24
[2024-11-01 09:54:21,060 INFO  L226             Difference]: Without dead ends: 22
[2024-11-01 09:54:21,060 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506
[2024-11-01 09:54:21,061 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:21,061 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-01 09:54:21,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-01 09:54:21,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-01 09:54:21,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:21,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2024-11-01 09:54:21,066 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17
[2024-11-01 09:54:21,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:21,066 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2024-11-01 09:54:21,067 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:21,067 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2024-11-01 09:54:21,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-01 09:54:21,067 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:21,067 INFO  L215           NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1]
[2024-11-01 09:54:21,086 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0
[2024-11-01 09:54:21,268 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:21,268 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:21,269 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:21,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 1003628899, now seen corresponding path program 5 times
[2024-11-01 09:54:21,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:21,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879455546]
[2024-11-01 09:54:21,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:21,269 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:21,271 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:21,273 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 09:54:21,274 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-01 09:54:23,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:24,046 INFO  L255         TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:24,067 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 09:54:24,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:24,261 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 09:54:24,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 09:54:24,758 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 09:54:24,758 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879455546]
[2024-11-01 09:54:24,758 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1879455546] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 09:54:24,758 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 09:54:24,758 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-01 09:54:24,758 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762627924]
[2024-11-01 09:54:24,758 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 09:54:24,759 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-01 09:54:24,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 09:54:24,759 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-01 09:54:24,759 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240
[2024-11-01 09:54:24,760 INFO  L87              Difference]: Start difference. First operand 21 states and 21 transitions. Second operand  has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:25,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 09:54:25,204 INFO  L93              Difference]: Finished difference Result 27 states and 27 transitions.
[2024-11-01 09:54:25,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-01 09:54:25,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2024-11-01 09:54:25,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 09:54:25,205 INFO  L225             Difference]: With dead ends: 27
[2024-11-01 09:54:25,205 INFO  L226             Difference]: Without dead ends: 25
[2024-11-01 09:54:25,206 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702
[2024-11-01 09:54:25,207 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-01 09:54:25,208 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-01 09:54:25,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-01 09:54:25,214 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2024-11-01 09:54:25,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:25,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2024-11-01 09:54:25,216 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20
[2024-11-01 09:54:25,216 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 09:54:25,216 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2024-11-01 09:54:25,217 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 09:54:25,217 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2024-11-01 09:54:25,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-01 09:54:25,219 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 09:54:25,219 INFO  L215           NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1]
[2024-11-01 09:54:25,252 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0
[2024-11-01 09:54:25,423 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:25,424 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 09:54:25,424 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 09:54:25,424 INFO  L85        PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 6 times
[2024-11-01 09:54:25,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 09:54:25,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562256329]
[2024-11-01 09:54:25,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 09:54:25,425 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 09:54:25,427 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 09:54:25,430 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 09:54:25,431 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2024-11-01 09:54:28,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 09:54:28,732 INFO  L255         TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 60 conjuncts are in the unsatisfiable core
[2024-11-01 09:54:28,755 INFO  L278         TraceCheckSpWp]: Computing forward predicates...