/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-04 17:10:59,458 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-04 17:10:59,509 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-04 17:10:59,513 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-04 17:10:59,514 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-04 17:10:59,535 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-04 17:10:59,536 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-04 17:10:59,536 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-04 17:10:59,537 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-04 17:10:59,537 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-04 17:10:59,537 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-04 17:10:59,537 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-04 17:10:59,538 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-04 17:10:59,538 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-04 17:10:59,538 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-04 17:10:59,538 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-04 17:10:59,539 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-04 17:10:59,539 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-04 17:10:59,539 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-04 17:10:59,542 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-04 17:10:59,542 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-04 17:10:59,544 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-04 17:10:59,544 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-04 17:10:59,544 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-04 17:10:59,544 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-04 17:10:59,545 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-04 17:10:59,545 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:10:59,546 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-04 17:10:59,546 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-04 17:10:59,547 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-04 17:10:59,547 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-04 17:10:59,548 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:10:59,736 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-04 17:10:59,755 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-04 17:10:59,757 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-04 17:10:59,759 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-04 17:10:59,759 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-04 17:10:59,760 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c
[2024-11-04 17:11:00,930 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-04 17:11:01,155 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-04 17:11:01,156 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c
[2024-11-04 17:11:01,173 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bcffa94/ab1808998f484d9b8b7ee585596aab8f/FLAGa57625d0e
[2024-11-04 17:11:01,506 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bcffa94/ab1808998f484d9b8b7ee585596aab8f
[2024-11-04 17:11:01,508 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-04 17:11:01,509 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-04 17:11:01,512 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-04 17:11:01,512 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-04 17:11:01,516 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-04 17:11:01,516 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:11:01" (1/1) ...
[2024-11-04 17:11:01,517 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b839b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:01, skipping insertion in model container
[2024-11-04 17:11:01,517 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:11:01" (1/1) ...
[2024-11-04 17:11:01,570 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-04 17:11:01,726 WARN  L250   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.usb_phy.c[1247,1260]
[2024-11-04 17:11:02,033 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:11:02,042 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-04 17:11:02,050 WARN  L250   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.usb_phy.c[1247,1260]
[2024-11-04 17:11:02,141 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:11:02,153 INFO  L204         MainTranslator]: Completed translation
[2024-11-04 17:11:02,153 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02 WrapperNode
[2024-11-04 17:11:02,153 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-04 17:11:02,154 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-04 17:11:02,154 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-04 17:11:02,154 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-04 17:11:02,159 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,191 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,265 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517
[2024-11-04 17:11:02,266 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-04 17:11:02,266 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-04 17:11:02,266 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-04 17:11:02,266 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-04 17:11:02,274 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,274 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,289 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,329 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].
[2024-11-04 17:11:02,330 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,330 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,369 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,379 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,387 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,398 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,416 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-04 17:11:02,417 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-04 17:11:02,417 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-04 17:11:02,418 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-04 17:11:02,418 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (1/1) ...
[2024-11-04 17:11:02,423 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:11:02,430 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:02,440 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)
[2024-11-04 17:11:02,442 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
[2024-11-04 17:11:02,459 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-04 17:11:02,459 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-04 17:11:02,459 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-04 17:11:02,459 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-04 17:11:02,738 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-04 17:11:02,740 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-04 17:11:03,678 INFO  L?                        ?]: Removed 208 outVars from TransFormulas that were not future-live.
[2024-11-04 17:11:03,678 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-04 17:11:03,686 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-04 17:11:03,687 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-04 17:11:03,687 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:11:03 BoogieIcfgContainer
[2024-11-04 17:11:03,687 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-04 17:11:03,688 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-04 17:11:03,688 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-04 17:11:03,691 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-04 17:11:03,691 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:11:01" (1/3) ...
[2024-11-04 17:11:03,691 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a632ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:11:03, skipping insertion in model container
[2024-11-04 17:11:03,692 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:02" (2/3) ...
[2024-11-04 17:11:03,692 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a632ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:11:03, skipping insertion in model container
[2024-11-04 17:11:03,692 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:11:03" (3/3) ...
[2024-11-04 17:11:03,692 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.usb_phy.c
[2024-11-04 17:11:03,704 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-04 17:11:03,705 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-04 17:11:03,745 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-04 17:11:03,750 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;@43198f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-04 17:11:03,750 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-04 17:11:03,753 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)
[2024-11-04 17:11:03,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-04 17:11:03,757 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:03,757 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-04 17:11:03,758 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:03,762 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:03,763 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-04 17:11:03,768 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:03,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062411391]
[2024-11-04 17:11:03,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:03,770 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:03,770 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:03,772 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:03,773 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-04 17:11:04,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:04,151 INFO  L255         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:04,163 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:04,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:04,357 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:04,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:04,461 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:04,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062411391]
[2024-11-04 17:11:04,461 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1062411391] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-04 17:11:04,461 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-04 17:11:04,461 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-04 17:11:04,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390646833]
[2024-11-04 17:11:04,463 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-04 17:11:04,466 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-04 17:11:04,466 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:04,484 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-04 17:11:04,484 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-04 17:11:04,486 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)
[2024-11-04 17:11:04,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:04,571 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-04 17:11:04,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-04 17:11:04,573 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
[2024-11-04 17:11:04,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:04,578 INFO  L225             Difference]: With dead ends: 18
[2024-11-04 17:11:04,578 INFO  L226             Difference]: Without dead ends: 10
[2024-11-04 17:11:04,580 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
[2024-11-04 17:11:04,582 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
[2024-11-04 17:11:04,583 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]
[2024-11-04 17:11:04,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-04 17:11:04,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-04 17:11:04,603 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)
[2024-11-04 17:11:04,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-04 17:11:04,604 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-04 17:11:04,604 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:04,604 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-04 17:11:04,605 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)
[2024-11-04 17:11:04,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-04 17:11:04,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-04 17:11:04,605 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:04,605 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:11:04,621 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-04 17:11:04,809 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:04,810 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:04,811 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:04,811 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-04 17:11:04,811 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:04,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152425811]
[2024-11-04 17:11:04,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:04,811 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:04,811 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:04,813 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:04,814 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-04 17:11:05,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:05,250 INFO  L255         TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:05,261 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:05,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:05,377 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:05,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:05,578 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:05,579 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152425811]
[2024-11-04 17:11:05,580 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1152425811] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:05,580 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:05,580 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-04 17:11:05,581 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224044348]
[2024-11-04 17:11:05,581 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:05,581 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-04 17:11:05,581 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:05,582 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-04 17:11:05,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2024-11-04 17:11:05,582 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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)
[2024-11-04 17:11:05,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:05,728 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-04 17:11:05,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-04 17:11:05,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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
[2024-11-04 17:11:05,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:05,729 INFO  L225             Difference]: With dead ends: 15
[2024-11-04 17:11:05,729 INFO  L226             Difference]: Without dead ends: 13
[2024-11-04 17:11:05,729 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2024-11-04 17:11:05,730 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:05,730 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-04 17:11:05,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-04 17:11:05,732 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2024-11-04 17:11:05,732 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)
[2024-11-04 17:11:05,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-11-04 17:11:05,732 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8
[2024-11-04 17:11:05,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:05,733 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-11-04 17:11:05,733 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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)
[2024-11-04 17:11:05,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-11-04 17:11:05,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-04 17:11:05,733 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:05,733 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-11-04 17:11:05,747 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-04 17:11:05,937 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:05,938 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:05,938 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:05,938 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times
[2024-11-04 17:11:05,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:05,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134272173]
[2024-11-04 17:11:05,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:05,939 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:05,939 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:05,940 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:05,941 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-04 17:11:06,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:06,467 INFO  L255         TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:06,481 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:06,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:06,591 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:06,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:06,881 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:06,883 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134272173]
[2024-11-04 17:11:06,883 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2134272173] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:06,884 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:06,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-04 17:11:06,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939184561]
[2024-11-04 17:11:06,884 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:06,884 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-04 17:11:06,884 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:06,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-04 17:11:06,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2024-11-04 17:11:06,885 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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)
[2024-11-04 17:11:07,133 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:07,133 INFO  L93              Difference]: Finished difference Result 18 states and 18 transitions.
[2024-11-04 17:11:07,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-04 17:11:07,133 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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
[2024-11-04 17:11:07,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:07,134 INFO  L225             Difference]: With dead ends: 18
[2024-11-04 17:11:07,134 INFO  L226             Difference]: Without dead ends: 16
[2024-11-04 17:11:07,138 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272
[2024-11-04 17:11:07,139 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:07,139 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-04 17:11:07,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-04 17:11:07,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-04 17:11:07,142 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)
[2024-11-04 17:11:07,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-04 17:11:07,142 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11
[2024-11-04 17:11:07,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:07,142 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-04 17:11:07,142 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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)
[2024-11-04 17:11:07,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-04 17:11:07,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-04 17:11:07,143 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:07,143 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-04 17:11:07,157 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-04 17:11:07,345 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:07,346 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:07,346 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:07,346 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times
[2024-11-04 17:11:07,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:07,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563358592]
[2024-11-04 17:11:07,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:07,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:07,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:07,349 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:07,349 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-04 17:11:07,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:08,009 INFO  L255         TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:08,027 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:08,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:08,176 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:08,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:08,521 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:08,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563358592]
[2024-11-04 17:11:08,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [563358592] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:08,521 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:08,522 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2024-11-04 17:11:08,522 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029713376]
[2024-11-04 17:11:08,522 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:08,524 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-04 17:11:08,525 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:08,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-04 17:11:08,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2024-11-04 17:11:08,526 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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)
[2024-11-04 17:11:08,777 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:08,777 INFO  L93              Difference]: Finished difference Result 21 states and 21 transitions.
[2024-11-04 17:11:08,778 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-04 17:11:08,778 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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
[2024-11-04 17:11:08,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:08,778 INFO  L225             Difference]: With dead ends: 21
[2024-11-04 17:11:08,778 INFO  L226             Difference]: Without dead ends: 19
[2024-11-04 17:11:08,779 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420
[2024-11-04 17:11:08,779 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:08,779 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-04 17:11:08,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-04 17:11:08,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2024-11-04 17:11:08,781 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)
[2024-11-04 17:11:08,782 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2024-11-04 17:11:08,782 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14
[2024-11-04 17:11:08,782 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:08,782 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2024-11-04 17:11:08,782 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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)
[2024-11-04 17:11:08,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2024-11-04 17:11:08,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-04 17:11:08,782 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:08,783 INFO  L215           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-11-04 17:11:08,798 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-04 17:11:08,983 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:08,983 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:08,984 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:08,984 INFO  L85        PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 4 times
[2024-11-04 17:11:08,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:08,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260979096]
[2024-11-04 17:11:08,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:08,984 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:08,984 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:08,985 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:08,986 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-04 17:11:09,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:09,698 INFO  L255         TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:09,714 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:09,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:09,850 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:10,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:10,278 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:10,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260979096]
[2024-11-04 17:11:10,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1260979096] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:10,278 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:10,278 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-04 17:11:10,278 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198025899]
[2024-11-04 17:11:10,278 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:10,279 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-04 17:11:10,279 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:10,279 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-04 17:11:10,279 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240
[2024-11-04 17:11:10,280 INFO  L87              Difference]: Start difference. First operand 18 states and 18 transitions. Second operand  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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)
[2024-11-04 17:11:10,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:10,579 INFO  L93              Difference]: Finished difference Result 24 states and 24 transitions.
[2024-11-04 17:11:10,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-11-04 17:11:10,580 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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
[2024-11-04 17:11:10,580 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:10,580 INFO  L225             Difference]: With dead ends: 24
[2024-11-04 17:11:10,580 INFO  L226             Difference]: Without dead ends: 22
[2024-11-04 17:11:10,581 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600
[2024-11-04 17:11:10,581 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:10,581 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-04 17:11:10,582 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-04 17:11:10,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-04 17:11:10,583 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)
[2024-11-04 17:11:10,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2024-11-04 17:11:10,584 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17
[2024-11-04 17:11:10,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:10,584 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2024-11-04 17:11:10,584 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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)
[2024-11-04 17:11:10,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2024-11-04 17:11:10,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-04 17:11:10,585 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:10,585 INFO  L215           NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1]
[2024-11-04 17:11:10,599 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-04 17:11:10,785 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:10,785 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:10,786 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:10,786 INFO  L85        PathProgramCache]: Analyzing trace with hash 1003628899, now seen corresponding path program 5 times
[2024-11-04 17:11:10,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:10,786 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784942476]
[2024-11-04 17:11:10,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:10,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:10,786 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:10,787 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:10,788 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-04 17:11:11,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:11,556 INFO  L255         TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:11,575 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:11,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:11,770 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:12,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:11:12,236 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:12,237 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784942476]
[2024-11-04 17:11:12,237 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [784942476] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:12,237 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:12,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2024-11-04 17:11:12,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292879821]
[2024-11-04 17:11:12,237 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:12,237 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-04 17:11:12,237 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:12,238 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-04 17:11:12,238 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306
[2024-11-04 17:11:12,238 INFO  L87              Difference]: Start difference. First operand 21 states and 21 transitions. Second operand  has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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)
[2024-11-04 17:11:12,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:12,645 INFO  L93              Difference]: Finished difference Result 27 states and 27 transitions.
[2024-11-04 17:11:12,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-04 17:11:12,647 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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
[2024-11-04 17:11:12,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:12,647 INFO  L225             Difference]: With dead ends: 27
[2024-11-04 17:11:12,647 INFO  L226             Difference]: Without dead ends: 25
[2024-11-04 17:11:12,648 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812
[2024-11-04 17:11:12,648 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:12,649 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 37 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-04 17:11:12,649 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-04 17:11:12,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2024-11-04 17:11:12,651 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)
[2024-11-04 17:11:12,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2024-11-04 17:11:12,651 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20
[2024-11-04 17:11:12,651 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:12,651 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2024-11-04 17:11:12,651 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 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)
[2024-11-04 17:11:12,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2024-11-04 17:11:12,652 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-04 17:11:12,652 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:12,652 INFO  L215           NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1]
[2024-11-04 17:11:12,668 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-04 17:11:12,852 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:12,853 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:12,853 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:12,853 INFO  L85        PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 6 times
[2024-11-04 17:11:12,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:12,854 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114553837]
[2024-11-04 17:11:12,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:12,854 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:12,854 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:12,855 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:12,856 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-04 17:11:13,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:13,830 INFO  L255         TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 61 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:13,857 INFO  L278         TraceCheckSpWp]: Computing forward predicates...