/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-crafted/mapavg5.i


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-30 22:20:42,337 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-03-30 22:20:42,339 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-03-30 22:20:42,398 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-03-30 22:20:42,400 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-03-30 22:20:42,401 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-03-30 22:20:42,402 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-03-30 22:20:42,402 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-03-30 22:20:42,403 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-03-30 22:20:42,404 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-03-30 22:20:42,409 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2023-03-30 22:20:42,411 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-03-30 22:20:42,412 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-03-30 22:20:42,413 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-03-30 22:20:42,420 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-03-30 22:20:42,423 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-03-30 22:20:42,424 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-03-30 22:20:42,424 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-03-30 22:20:42,425 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-03-30 22:20:42,425 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-03-30 22:20:42,426 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-03-30 22:20:42,426 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-30 22:20:42,427 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-30 22:20:42,429 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-03-30 22:20:42,460 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-30 22:20:42,460 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-30 22:20:42,460 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-30 22:20:42,461 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-30 22:20:42,462 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-30 22:20:42,462 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-30 22:20:42,462 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-03-30 22:20:42,462 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-03-30 22:20:42,462 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-03-30 22:20:42,463 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-30 22:20:42,463 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-30 22:20:42,463 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-30 22:20:42,463 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-30 22:20:42,464 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-30 22:20:42,464 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-03-30 22:20:42,465 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-30 22:20:42,465 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:20:42,465 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-30 22:20:42,465 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-30 22:20:42,465 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-30 22:20:42,465 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-03-30 22:20:42,466 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-03-30 22:20:42,466 INFO  L138        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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-03-30 22:20:42,697 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-30 22:20:42,715 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-30 22:20:42,717 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-30 22:20:42,718 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-30 22:20:42,718 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-30 22:20:42,719 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/mapavg5.i
[2023-03-30 22:20:43,779 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-30 22:20:43,942 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-30 22:20:43,942 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg5.i
[2023-03-30 22:20:43,947 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ceb446c4/ca3228cd0fe14cb3a11c7a6bdb7afbec/FLAG593fdd1fe
[2023-03-30 22:20:43,958 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ceb446c4/ca3228cd0fe14cb3a11c7a6bdb7afbec
[2023-03-30 22:20:43,960 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-30 22:20:43,961 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-30 22:20:43,963 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-30 22:20:43,963 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-30 22:20:43,966 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-30 22:20:43,966 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:20:43" (1/1) ...
[2023-03-30 22:20:43,967 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490d9b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:43, skipping insertion in model container
[2023-03-30 22:20:43,967 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:20:43" (1/1) ...
[2023-03-30 22:20:43,973 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-30 22:20:43,984 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-30 22:20:44,124 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg5.i[1383,1396]
[2023-03-30 22:20:44,128 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:20:44,140 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-30 22:20:44,168 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapavg5.i[1383,1396]
[2023-03-30 22:20:44,169 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:20:44,179 INFO  L208         MainTranslator]: Completed translation
[2023-03-30 22:20:44,179 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44 WrapperNode
[2023-03-30 22:20:44,179 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-30 22:20:44,180 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-30 22:20:44,180 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-30 22:20:44,180 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-30 22:20:44,188 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,189 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,200 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,200 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,207 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,210 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,212 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,213 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,215 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-30 22:20:44,216 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-30 22:20:44,216 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-30 22:20:44,216 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-30 22:20:44,217 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (1/1) ...
[2023-03-30 22:20:44,230 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:20:44,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:44,252 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-03-30 22:20:44,255 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-03-30 22:20:44,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-30 22:20:44,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-30 22:20:44,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-30 22:20:44,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure mapavg
[2023-03-30 22:20:44,287 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-30 22:20:44,287 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure mapavg
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-30 22:20:44,288 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-30 22:20:44,351 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-30 22:20:44,352 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-30 22:20:44,505 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-30 22:20:44,510 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-30 22:20:44,510 INFO  L302             CfgBuilder]: Removed 3 assume(true) statements.
[2023-03-30 22:20:44,512 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:20:44 BoogieIcfgContainer
[2023-03-30 22:20:44,512 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-30 22:20:44,513 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-30 22:20:44,514 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-30 22:20:44,517 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-30 22:20:44,517 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:20:43" (1/3) ...
[2023-03-30 22:20:44,518 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106633c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:20:44, skipping insertion in model container
[2023-03-30 22:20:44,518 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:20:44" (2/3) ...
[2023-03-30 22:20:44,518 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106633c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:20:44, skipping insertion in model container
[2023-03-30 22:20:44,518 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:20:44" (3/3) ...
[2023-03-30 22:20:44,519 INFO  L112   eAbstractionObserver]: Analyzing ICFG mapavg5.i
[2023-03-30 22:20:44,548 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-30 22:20:44,549 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-30 22:20:44,591 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-30 22:20:44,619 INFO  L357      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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6247a3cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-03-30 22:20:44,620 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-30 22:20:44,623 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-03-30 22:20:44,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-03-30 22:20:44,636 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:44,636 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:44,637 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:44,641 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:44,641 INFO  L85        PathProgramCache]: Analyzing trace with hash 519247409, now seen corresponding path program 1 times
[2023-03-30 22:20:44,647 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:44,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408016086]
[2023-03-30 22:20:44,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:44,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:44,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:20:44,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:20:44,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408016086]
[2023-03-30 22:20:44,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-03-30 22:20:44,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948212304]
[2023-03-30 22:20:44,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:44,771 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:44,771 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:44,774 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)
[2023-03-30 22:20:44,798 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-30 22:20:44,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:20:44,960 INFO  L262         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-03-30 22:20:44,965 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:45,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-03-30 22:20:45,045 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-03-30 22:20:45,045 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948212304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:20:45,046 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:20:45,046 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-03-30 22:20:45,048 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742394623]
[2023-03-30 22:20:45,048 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:20:45,051 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-03-30 22:20:45,052 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:20:45,074 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-03-30 22:20:45,075 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-03-30 22:20:45,077 INFO  L87              Difference]: Start difference. First operand  has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-03-30 22:20:45,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:20:45,125 INFO  L93              Difference]: Finished difference Result 59 states and 79 transitions.
[2023-03-30 22:20:45,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-03-30 22:20:45,128 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33
[2023-03-30 22:20:45,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:20:45,134 INFO  L225             Difference]: With dead ends: 59
[2023-03-30 22:20:45,134 INFO  L226             Difference]: Without dead ends: 29
[2023-03-30 22:20:45,136 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-03-30 22:20:45,140 INFO  L413           NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-30 22:20:45,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-30 22:20:45,154 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2023-03-30 22:20:45,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2023-03-30 22:20:45,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-30 22:20:45,170 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2023-03-30 22:20:45,171 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33
[2023-03-30 22:20:45,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:20:45,171 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2023-03-30 22:20:45,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-03-30 22:20:45,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2023-03-30 22:20:45,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-03-30 22:20:45,174 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:45,174 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:45,179 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-03-30 22:20:45,375 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-03-30 22:20:45,375 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:45,376 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:45,376 INFO  L85        PathProgramCache]: Analyzing trace with hash -1343899725, now seen corresponding path program 1 times
[2023-03-30 22:20:45,376 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:45,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339220525]
[2023-03-30 22:20:45,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:45,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:45,411 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-30 22:20:45,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430846808]
[2023-03-30 22:20:45,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:45,411 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:45,412 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:45,415 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)
[2023-03-30 22:20:45,419 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-30 22:20:45,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:20:45,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-03-30 22:20:45,541 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:45,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-03-30 22:20:45,582 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-30 22:20:45,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-03-30 22:20:45,650 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:20:45,652 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339220525]
[2023-03-30 22:20:45,652 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-03-30 22:20:45,652 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430846808]
[2023-03-30 22:20:45,653 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430846808] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-30 22:20:45,654 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-03-30 22:20:45,655 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2023-03-30 22:20:45,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473608321]
[2023-03-30 22:20:45,659 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-03-30 22:20:45,659 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-03-30 22:20:45,660 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:20:45,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-03-30 22:20:45,661 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2023-03-30 22:20:45,661 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand  has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2023-03-30 22:20:45,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:20:45,693 INFO  L93              Difference]: Finished difference Result 49 states and 57 transitions.
[2023-03-30 22:20:45,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-03-30 22:20:45,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 35
[2023-03-30 22:20:45,694 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:20:45,695 INFO  L225             Difference]: With dead ends: 49
[2023-03-30 22:20:45,695 INFO  L226             Difference]: Without dead ends: 31
[2023-03-30 22:20:45,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2023-03-30 22:20:45,697 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-30 22:20:45,697 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-30 22:20:45,698 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2023-03-30 22:20:45,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2023-03-30 22:20:45,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-30 22:20:45,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2023-03-30 22:20:45,703 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35
[2023-03-30 22:20:45,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:20:45,703 INFO  L495      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2023-03-30 22:20:45,703 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2023-03-30 22:20:45,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2023-03-30 22:20:45,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-03-30 22:20:45,704 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:45,705 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:45,714 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-03-30 22:20:45,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2023-03-30 22:20:45,911 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:45,912 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:45,912 INFO  L85        PathProgramCache]: Analyzing trace with hash -826933067, now seen corresponding path program 2 times
[2023-03-30 22:20:45,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:45,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808718917]
[2023-03-30 22:20:45,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:45,913 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:45,954 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-30 22:20:45,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400648959]
[2023-03-30 22:20:45,955 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-03-30 22:20:45,955 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:45,955 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:45,969 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)
[2023-03-30 22:20:45,973 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-03-30 22:20:46,042 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-03-30 22:20:46,042 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-30 22:20:46,043 INFO  L262         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-03-30 22:20:46,045 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:46,109 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-03-30 22:20:46,109 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-03-30 22:20:46,109 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:20:46,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808718917]
[2023-03-30 22:20:46,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-03-30 22:20:46,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400648959]
[2023-03-30 22:20:46,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [400648959] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:20:46,110 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:20:46,110 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-30 22:20:46,110 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925091131]
[2023-03-30 22:20:46,110 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:20:46,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-03-30 22:20:46,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:20:46,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-03-30 22:20:46,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-30 22:20:46,112 INFO  L87              Difference]: Start difference. First operand 30 states and 34 transitions. Second operand  has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2023-03-30 22:20:46,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:20:46,161 INFO  L93              Difference]: Finished difference Result 49 states and 59 transitions.
[2023-03-30 22:20:46,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-03-30 22:20:46,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37
[2023-03-30 22:20:46,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:20:46,163 INFO  L225             Difference]: With dead ends: 49
[2023-03-30 22:20:46,163 INFO  L226             Difference]: Without dead ends: 32
[2023-03-30 22:20:46,164 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-30 22:20:46,166 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-30 22:20:46,171 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-30 22:20:46,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2023-03-30 22:20:46,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31.
[2023-03-30 22:20:46,181 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-30 22:20:46,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions.
[2023-03-30 22:20:46,182 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37
[2023-03-30 22:20:46,183 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:20:46,183 INFO  L495      AbstractCegarLoop]: Abstraction has 31 states and 35 transitions.
[2023-03-30 22:20:46,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2023-03-30 22:20:46,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions.
[2023-03-30 22:20:46,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2023-03-30 22:20:46,186 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:46,186 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:46,199 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-03-30 22:20:46,392 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:46,392 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:46,393 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:46,393 INFO  L85        PathProgramCache]: Analyzing trace with hash -534618029, now seen corresponding path program 1 times
[2023-03-30 22:20:46,393 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:46,393 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108655708]
[2023-03-30 22:20:46,394 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:46,394 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:46,422 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-30 22:20:46,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232130203]
[2023-03-30 22:20:46,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:46,423 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:46,423 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:46,439 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)
[2023-03-30 22:20:46,455 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-03-30 22:20:46,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:20:46,528 INFO  L262         TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-03-30 22:20:46,533 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:46,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-03-30 22:20:46,579 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-30 22:20:46,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-03-30 22:20:46,678 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:20:46,678 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108655708]
[2023-03-30 22:20:46,678 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-03-30 22:20:46,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232130203]
[2023-03-30 22:20:46,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232130203] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-30 22:20:46,679 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-03-30 22:20:46,679 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8
[2023-03-30 22:20:46,679 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048047231]
[2023-03-30 22:20:46,679 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-03-30 22:20:46,680 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-03-30 22:20:46,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:20:46,683 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-03-30 22:20:46,683 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-03-30 22:20:46,683 INFO  L87              Difference]: Start difference. First operand 31 states and 35 transitions. Second operand  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7)
[2023-03-30 22:20:46,768 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:20:46,768 INFO  L93              Difference]: Finished difference Result 52 states and 62 transitions.
[2023-03-30 22:20:46,769 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-03-30 22:20:46,769 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43
[2023-03-30 22:20:46,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:20:46,770 INFO  L225             Difference]: With dead ends: 52
[2023-03-30 22:20:46,770 INFO  L226             Difference]: Without dead ends: 34
[2023-03-30 22:20:46,770 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2023-03-30 22:20:46,771 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-03-30 22:20:46,771 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 52 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-03-30 22:20:46,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2023-03-30 22:20:46,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33.
[2023-03-30 22:20:46,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-30 22:20:46,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions.
[2023-03-30 22:20:46,777 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 43
[2023-03-30 22:20:46,777 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:20:46,777 INFO  L495      AbstractCegarLoop]: Abstraction has 33 states and 37 transitions.
[2023-03-30 22:20:46,777 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7)
[2023-03-30 22:20:46,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions.
[2023-03-30 22:20:46,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2023-03-30 22:20:46,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:46,778 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:46,785 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-03-30 22:20:46,985 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:46,985 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:46,986 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:46,986 INFO  L85        PathProgramCache]: Analyzing trace with hash -2129505935, now seen corresponding path program 2 times
[2023-03-30 22:20:46,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:46,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772486070]
[2023-03-30 22:20:46,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:46,986 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:47,020 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-30 22:20:47,021 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593104203]
[2023-03-30 22:20:47,021 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-03-30 22:20:47,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:47,021 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:47,026 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)
[2023-03-30 22:20:47,027 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-03-30 22:20:47,108 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-03-30 22:20:47,108 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-30 22:20:47,109 INFO  L262         TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-03-30 22:20:47,116 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:47,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 67 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2023-03-30 22:20:47,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-03-30 22:20:47,162 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:20:47,162 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772486070]
[2023-03-30 22:20:47,162 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-03-30 22:20:47,162 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593104203]
[2023-03-30 22:20:47,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [593104203] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:20:47,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:20:47,162 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-30 22:20:47,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512930655]
[2023-03-30 22:20:47,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:20:47,163 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-03-30 22:20:47,163 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:20:47,164 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-03-30 22:20:47,164 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-30 22:20:47,164 INFO  L87              Difference]: Start difference. First operand 33 states and 37 transitions. Second operand  has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-03-30 22:20:47,193 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:20:47,194 INFO  L93              Difference]: Finished difference Result 50 states and 55 transitions.
[2023-03-30 22:20:47,194 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-03-30 22:20:47,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49
[2023-03-30 22:20:47,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:20:47,195 INFO  L225             Difference]: With dead ends: 50
[2023-03-30 22:20:47,195 INFO  L226             Difference]: Without dead ends: 35
[2023-03-30 22:20:47,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-30 22:20:47,196 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-30 22:20:47,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-30 22:20:47,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2023-03-30 22:20:47,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34.
[2023-03-30 22:20:47,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-30 22:20:47,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions.
[2023-03-30 22:20:47,201 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 49
[2023-03-30 22:20:47,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:20:47,203 INFO  L495      AbstractCegarLoop]: Abstraction has 34 states and 38 transitions.
[2023-03-30 22:20:47,203 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-03-30 22:20:47,203 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions.
[2023-03-30 22:20:47,204 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2023-03-30 22:20:47,204 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:20:47,204 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:20:47,209 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-03-30 22:20:47,412 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:47,413 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:20:47,413 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:20:47,413 INFO  L85        PathProgramCache]: Analyzing trace with hash 789732879, now seen corresponding path program 1 times
[2023-03-30 22:20:47,413 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:20:47,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363193075]
[2023-03-30 22:20:47,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:47,414 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:20:47,432 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-30 22:20:47,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027504528]
[2023-03-30 22:20:47,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:20:47,433 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:20:47,433 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:20:47,435 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)
[2023-03-30 22:20:47,438 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-03-30 22:20:47,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:20:47,526 INFO  L262         TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 104 conjunts are in the unsatisfiable core
[2023-03-30 22:20:47,534 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:20:47,594 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-03-30 22:20:48,338 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-30 22:20:48,339 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 146
[2023-03-30 22:20:49,709 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-30 22:20:49,710 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 477 treesize of output 280
[2023-03-30 22:20:52,880 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-30 22:20:52,881 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-30 22:20:52,884 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-30 22:20:52,885 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 385 treesize of output 291
[2023-03-30 22:20:56,228 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-30 22:20:56,229 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-30 22:20:56,283 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-30 22:20:56,283 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 778 treesize of output 397
[2023-03-30 22:21:18,165 WARN  L223               SmtUtils]: Spent 17.86s on a formula simplification. DAG size of input: 67 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-03-30 22:21:28,782 WARN  L223               SmtUtils]: Spent 8.68s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2023-03-30 22:21:28,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-03-30 22:21:28,841 INFO  L327         TraceCheckSpWp]: Computing backward predicates...