/usr/lib/jvm/java-1.11.0-openjdk-amd64/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 --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 21:01:22,987 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 21:01:23,052 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-20 21:01:23,055 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 21:01:23,056 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 21:01:23,078 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 21:01:23,078 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 21:01:23,078 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 21:01:23,079 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 21:01:23,079 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 21:01:23,079 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 21:01:23,079 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 21:01:23,081 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 21:01:23,081 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 21:01:23,081 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 21:01:23,082 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 21:01:23,082 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 21:01:23,091 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 21:01:23,091 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 21:01:23,091 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 21:01:23,092 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 21:01:23,096 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 21:01:23,096 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 21:01:23,096 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 21:01:23,097 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 21:01:23,097 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 21:01:23,097 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 21:01:23,097 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 21:01:23,097 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 21:01:23,098 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 21:01:23,098 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 21:01:23,098 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 21:01:23,098 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:01:23,098 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 21:01:23,098 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 21:01:23,099 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 21:01:23,100 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 21:01:23,100 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 21:01:23,100 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 21:01:23,270 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 21:01:23,285 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 21:01:23,286 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 21:01:23,287 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 21:01:23,287 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 21:01:23,288 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i
[2023-12-20 21:01:24,300 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 21:01:24,467 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 21:01:24,468 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i
[2023-12-20 21:01:24,476 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f0f83df9/40952e0a65c04b8a9344aeac627b1d36/FLAG3d5a4c58c
[2023-12-20 21:01:24,489 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f0f83df9/40952e0a65c04b8a9344aeac627b1d36
[2023-12-20 21:01:24,491 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 21:01:24,492 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 21:01:24,492 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 21:01:24,492 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 21:01:24,501 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 21:01:24,502 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,503 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6accc180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24, skipping insertion in model container
[2023-12-20 21:01:24,503 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,533 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 21:01:24,625 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i[919,932]
[2023-12-20 21:01:24,676 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:01:24,687 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 21:01:24,697 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i[919,932]
[2023-12-20 21:01:24,722 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:01:24,733 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 21:01:24,734 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24 WrapperNode
[2023-12-20 21:01:24,734 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 21:01:24,734 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 21:01:24,735 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 21:01:24,735 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 21:01:24,739 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,747 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,778 INFO  L138                Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176
[2023-12-20 21:01:24,778 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 21:01:24,779 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 21:01:24,779 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 21:01:24,779 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 21:01:24,786 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,786 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,789 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,800 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].
[2023-12-20 21:01:24,801 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,801 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,808 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,818 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,820 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,821 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,826 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 21:01:24,826 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 21:01:24,826 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 21:01:24,827 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 21:01:24,827 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (1/1) ...
[2023-12-20 21:01:24,831 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:01:24,842 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:24,873 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)
[2023-12-20 21:01:24,897 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
[2023-12-20 21:01:24,901 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 21:01:24,901 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 21:01:24,902 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 21:01:24,902 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 21:01:24,902 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 21:01:24,902 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 21:01:24,992 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 21:01:24,995 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 21:01:25,292 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 21:01:25,344 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 21:01:25,344 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 21:01:25,344 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:01:25 BoogieIcfgContainer
[2023-12-20 21:01:25,344 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 21:01:25,346 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 21:01:25,346 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 21:01:25,348 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 21:01:25,349 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:01:24" (1/3) ...
[2023-12-20 21:01:25,349 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe708f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:01:25, skipping insertion in model container
[2023-12-20 21:01:25,349 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:01:24" (2/3) ...
[2023-12-20 21:01:25,349 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe708f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:01:25, skipping insertion in model container
[2023-12-20 21:01:25,349 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:01:25" (3/3) ...
[2023-12-20 21:01:25,350 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-52.i
[2023-12-20 21:01:25,363 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 21:01:25,363 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 21:01:25,408 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 21:01:25,413 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=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;@b14e4bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 21:01:25,413 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 21:01:25,416 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 66 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 47 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-20 21:01:25,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2023-12-20 21:01:25,425 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:25,426 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:25,427 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:25,430 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:25,430 INFO  L85        PathProgramCache]: Analyzing trace with hash 364434003, now seen corresponding path program 1 times
[2023-12-20 21:01:25,436 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:25,437 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511516948]
[2023-12-20 21:01:25,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:25,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:25,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:25,593 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:01:25,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511516948]
[2023-12-20 21:01:25,594 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 21:01:25,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565990580]
[2023-12-20 21:01:25,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:25,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:25,595 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:25,597 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)
[2023-12-20 21:01:25,644 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-20 21:01:25,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:25,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 21:01:25,760 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:01:25,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked.
[2023-12-20 21:01:25,797 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:01:25,797 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [565990580] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:01:25,797 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:01:25,798 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 21:01:25,799 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327099029]
[2023-12-20 21:01:25,799 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:01:25,804 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 21:01:25,804 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:01:25,827 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 21:01:25,827 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 21:01:25,829 INFO  L87              Difference]: Start difference. First operand  has 66 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 47 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17)
[2023-12-20 21:01:25,858 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:01:25,858 INFO  L93              Difference]: Finished difference Result 129 states and 223 transitions.
[2023-12-20 21:01:25,859 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 21:01:25,860 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118
[2023-12-20 21:01:25,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:01:25,876 INFO  L225             Difference]: With dead ends: 129
[2023-12-20 21:01:25,876 INFO  L226             Difference]: Without dead ends: 64
[2023-12-20 21:01:25,879 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 21:01:25,881 INFO  L413           NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 21:01:25,882 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:01:25,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2023-12-20 21:01:25,907 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2023-12-20 21:01:25,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 64 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-20 21:01:25,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 99 transitions.
[2023-12-20 21:01:25,910 INFO  L78                 Accepts]: Start accepts. Automaton has 64 states and 99 transitions. Word has length 118
[2023-12-20 21:01:25,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:01:25,911 INFO  L495      AbstractCegarLoop]: Abstraction has 64 states and 99 transitions.
[2023-12-20 21:01:25,911 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17)
[2023-12-20 21:01:25,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 64 states and 99 transitions.
[2023-12-20 21:01:25,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2023-12-20 21:01:25,913 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:25,913 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:25,922 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-20 21:01:26,120 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
[2023-12-20 21:01:26,120 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:26,121 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:26,121 INFO  L85        PathProgramCache]: Analyzing trace with hash 2135399705, now seen corresponding path program 1 times
[2023-12-20 21:01:26,122 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:26,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111560685]
[2023-12-20 21:01:26,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:26,123 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:26,196 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:01:26,196 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190905190]
[2023-12-20 21:01:26,196 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:26,197 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:26,197 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:26,199 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)
[2023-12-20 21:01:26,201 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-20 21:01:26,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:26,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-20 21:01:26,334 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:01:26,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-20 21:01:26,522 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:01:26,523 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:01:26,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111560685]
[2023-12-20 21:01:26,523 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:01:26,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190905190]
[2023-12-20 21:01:26,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [190905190] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:01:26,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:01:26,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-20 21:01:26,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83654093]
[2023-12-20 21:01:26,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:01:26,525 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-20 21:01:26,525 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:01:26,526 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-20 21:01:26,526 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:01:26,526 INFO  L87              Difference]: Start difference. First operand 64 states and 99 transitions. Second operand  has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-20 21:01:26,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:01:26,655 INFO  L93              Difference]: Finished difference Result 127 states and 197 transitions.
[2023-12-20 21:01:26,657 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-20 21:01:26,657 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 118
[2023-12-20 21:01:26,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:01:26,659 INFO  L225             Difference]: With dead ends: 127
[2023-12-20 21:01:26,659 INFO  L226             Difference]: Without dead ends: 64
[2023-12-20 21:01:26,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-20 21:01:26,662 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 155 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:01:26,662 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 99 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:01:26,663 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2023-12-20 21:01:26,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2023-12-20 21:01:26,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 64 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-20 21:01:26,669 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 98 transitions.
[2023-12-20 21:01:26,669 INFO  L78                 Accepts]: Start accepts. Automaton has 64 states and 98 transitions. Word has length 118
[2023-12-20 21:01:26,671 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:01:26,671 INFO  L495      AbstractCegarLoop]: Abstraction has 64 states and 98 transitions.
[2023-12-20 21:01:26,671 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-20 21:01:26,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 64 states and 98 transitions.
[2023-12-20 21:01:26,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2023-12-20 21:01:26,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:26,672 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:26,683 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-20 21:01:26,880 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
[2023-12-20 21:01:26,881 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:26,881 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:26,881 INFO  L85        PathProgramCache]: Analyzing trace with hash 1712697879, now seen corresponding path program 1 times
[2023-12-20 21:01:26,881 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:26,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480412341]
[2023-12-20 21:01:26,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:26,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:26,919 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:01:26,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354690829]
[2023-12-20 21:01:26,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:26,919 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:26,920 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:26,920 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)
[2023-12-20 21:01:26,940 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-20 21:01:27,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:27,010 INFO  L262         TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-20 21:01:27,016 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:01:27,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 276 proven. 18 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-12-20 21:01:27,091 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 21:01:27,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked.
[2023-12-20 21:01:27,265 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:01:27,266 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480412341]
[2023-12-20 21:01:27,266 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:01:27,266 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354690829]
[2023-12-20 21:01:27,266 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [354690829] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 21:01:27,266 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 21:01:27,266 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2023-12-20 21:01:27,266 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993292794]
[2023-12-20 21:01:27,266 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 21:01:27,268 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-20 21:01:27,268 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:01:27,268 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-20 21:01:27,268 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-20 21:01:27,269 INFO  L87              Difference]: Start difference. First operand 64 states and 98 transitions. Second operand  has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)
[2023-12-20 21:01:27,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:01:27,414 INFO  L93              Difference]: Finished difference Result 133 states and 200 transitions.
[2023-12-20 21:01:27,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-20 21:01:27,415 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 118
[2023-12-20 21:01:27,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:01:27,419 INFO  L225             Difference]: With dead ends: 133
[2023-12-20 21:01:27,419 INFO  L226             Difference]: Without dead ends: 70
[2023-12-20 21:01:27,420 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132
[2023-12-20 21:01:27,422 INFO  L413           NwaCegarLoop]: 75 mSDtfsCounter, 153 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:01:27,424 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 187 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:01:27,426 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2023-12-20 21:01:27,441 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68.
[2023-12-20 21:01:27,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-20 21:01:27,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions.
[2023-12-20 21:01:27,444 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 118
[2023-12-20 21:01:27,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:01:27,445 INFO  L495      AbstractCegarLoop]: Abstraction has 68 states and 100 transitions.
[2023-12-20 21:01:27,445 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)
[2023-12-20 21:01:27,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions.
[2023-12-20 21:01:27,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2023-12-20 21:01:27,450 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:27,451 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:27,459 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-20 21:01:27,668 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
[2023-12-20 21:01:27,669 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:27,669 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:27,669 INFO  L85        PathProgramCache]: Analyzing trace with hash -1900479270, now seen corresponding path program 1 times
[2023-12-20 21:01:27,669 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:27,669 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498309195]
[2023-12-20 21:01:27,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:27,669 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:27,707 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:01:27,707 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79894387]
[2023-12-20 21:01:27,707 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:27,708 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:27,708 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:27,709 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)
[2023-12-20 21:01:27,732 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-20 21:01:27,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:27,798 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-20 21:01:27,802 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:01:27,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-20 21:01:27,831 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:01:27,832 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:01:27,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498309195]
[2023-12-20 21:01:27,832 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:01:27,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79894387]
[2023-12-20 21:01:27,832 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [79894387] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:01:27,832 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:01:27,832 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-20 21:01:27,832 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044392868]
[2023-12-20 21:01:27,832 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:01:27,834 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-20 21:01:27,834 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:01:27,835 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-20 21:01:27,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-20 21:01:27,836 INFO  L87              Difference]: Start difference. First operand 68 states and 100 transitions. Second operand  has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-20 21:01:27,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:01:27,892 INFO  L93              Difference]: Finished difference Result 194 states and 283 transitions.
[2023-12-20 21:01:27,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-20 21:01:27,892 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 119
[2023-12-20 21:01:27,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:01:27,896 INFO  L225             Difference]: With dead ends: 194
[2023-12-20 21:01:27,896 INFO  L226             Difference]: Without dead ends: 127
[2023-12-20 21:01:27,897 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:01:27,900 INFO  L413           NwaCegarLoop]: 90 mSDtfsCounter, 74 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 21:01:27,900 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 260 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:01:27,902 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2023-12-20 21:01:27,921 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81.
[2023-12-20 21:01:27,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-20 21:01:27,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions.
[2023-12-20 21:01:27,923 INFO  L78                 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 119
[2023-12-20 21:01:27,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:01:27,924 INFO  L495      AbstractCegarLoop]: Abstraction has 81 states and 116 transitions.
[2023-12-20 21:01:27,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-20 21:01:27,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions.
[2023-12-20 21:01:27,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2023-12-20 21:01:27,925 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:27,925 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:27,934 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-20 21:01:28,134 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
[2023-12-20 21:01:28,134 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:28,135 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:28,135 INFO  L85        PathProgramCache]: Analyzing trace with hash -1426493669, now seen corresponding path program 1 times
[2023-12-20 21:01:28,136 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:28,136 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949846129]
[2023-12-20 21:01:28,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:28,136 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:28,168 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:01:28,168 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377591776]
[2023-12-20 21:01:28,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:28,168 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:28,168 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:28,176 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)
[2023-12-20 21:01:28,177 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-20 21:01:28,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:28,270 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-20 21:01:28,272 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:01:28,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 314 proven. 51 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2023-12-20 21:01:28,494 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 21:01:28,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 54 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked.
[2023-12-20 21:01:28,718 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:01:28,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949846129]
[2023-12-20 21:01:28,719 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:01:28,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377591776]
[2023-12-20 21:01:28,721 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [377591776] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 21:01:28,724 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 21:01:28,725 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14
[2023-12-20 21:01:28,725 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048891807]
[2023-12-20 21:01:28,725 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 21:01:28,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-12-20 21:01:28,726 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:01:28,726 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-12-20 21:01:28,727 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2023-12-20 21:01:28,727 INFO  L87              Difference]: Start difference. First operand 81 states and 116 transitions. Second operand  has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28)
[2023-12-20 21:01:29,142 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:01:29,143 INFO  L93              Difference]: Finished difference Result 208 states and 286 transitions.
[2023-12-20 21:01:29,143 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-12-20 21:01:29,143 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 120
[2023-12-20 21:01:29,144 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:01:29,144 INFO  L225             Difference]: With dead ends: 208
[2023-12-20 21:01:29,144 INFO  L226             Difference]: Without dead ends: 128
[2023-12-20 21:01:29,145 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=266, Invalid=604, Unknown=0, NotChecked=0, Total=870
[2023-12-20 21:01:29,145 INFO  L413           NwaCegarLoop]: 98 mSDtfsCounter, 298 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-20 21:01:29,147 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 351 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-20 21:01:29,148 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2023-12-20 21:01:29,166 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119.
[2023-12-20 21:01:29,167 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 119 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 77 states have internal predecessors, (89), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-20 21:01:29,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions.
[2023-12-20 21:01:29,168 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 120
[2023-12-20 21:01:29,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:01:29,169 INFO  L495      AbstractCegarLoop]: Abstraction has 119 states and 157 transitions.
[2023-12-20 21:01:29,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28)
[2023-12-20 21:01:29,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions.
[2023-12-20 21:01:29,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2023-12-20 21:01:29,170 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:01:29,170 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 21:01:29,181 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-20 21:01:29,381 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
[2023-12-20 21:01:29,382 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:01:29,383 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:01:29,383 INFO  L85        PathProgramCache]: Analyzing trace with hash -267769056, now seen corresponding path program 1 times
[2023-12-20 21:01:29,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:01:29,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795414071]
[2023-12-20 21:01:29,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:29,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:01:29,418 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:01:29,418 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127966677]
[2023-12-20 21:01:29,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:01:29,419 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:01:29,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:01:29,422 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)
[2023-12-20 21:01:29,444 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-20 21:01:29,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:01:29,734 INFO  L262         TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 71 conjunts are in the unsatisfiable core
[2023-12-20 21:01:29,739 INFO  L285         TraceCheckSpWp]: Computing forward predicates...