/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-ps-co_file-45.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 21:41:49,571 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 21:41:49,613 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 21:41:49,616 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 21:41:49,616 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 21:41:49,635 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 21:41:49,635 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 21:41:49,636 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 21:41:49,636 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 21:41:49,639 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 21:41:49,639 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 21:41:49,640 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 21:41:49,640 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 21:41:49,641 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 21:41:49,641 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 21:41:49,642 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 21:41:49,642 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 21:41:49,642 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 21:41:49,642 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 21:41:49,642 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 21:41:49,642 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 21:41:49,643 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 21:41:49,644 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 21:41:49,644 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 21:41:49,644 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 21:41:49,645 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 21:41:49,645 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 21:41:49,645 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:41:49,646 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 21:41:49,646 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 21:41:49,647 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 21:41:49,647 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 21:41:49,647 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 21:41:49,808 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 21:41:49,833 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 21:41:49,835 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 21:41:49,835 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 21:41:49,836 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 21:41:49,837 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i
[2023-12-20 21:41:50,830 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 21:41:51,014 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 21:41:51,015 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i
[2023-12-20 21:41:51,021 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f52e3bd8/9695fd39cd8440fa9fa59b5111c67d29/FLAG33d699fb9
[2023-12-20 21:41:51,031 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f52e3bd8/9695fd39cd8440fa9fa59b5111c67d29
[2023-12-20 21:41:51,033 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 21:41:51,034 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 21:41:51,034 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 21:41:51,035 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 21:41:51,039 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 21:41:51,040 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,040 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7007d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51, skipping insertion in model container
[2023-12-20 21:41:51,040 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,065 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 21:41:51,159 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-ps-co_file-45.i[919,932]
[2023-12-20 21:41:51,209 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:41:51,223 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 21:41:51,230 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-ps-co_file-45.i[919,932]
[2023-12-20 21:41:51,253 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:41:51,264 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 21:41:51,265 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51 WrapperNode
[2023-12-20 21:41:51,265 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 21:41:51,266 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 21:41:51,266 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 21:41:51,266 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 21:41:51,270 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,277 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,303 INFO  L138                Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 219
[2023-12-20 21:41:51,303 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 21:41:51,304 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 21:41:51,304 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 21:41:51,304 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 21:41:51,311 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,311 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,313 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,324 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 21:41:51,324 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,324 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,331 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,333 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,335 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,337 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,339 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 21:41:51,340 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 21:41:51,340 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 21:41:51,340 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 21:41:51,341 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (1/1) ...
[2023-12-20 21:41:51,344 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:41:51,354 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:51,388 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 21:41:51,394 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 21:41:51,409 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 21:41:51,409 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 21:41:51,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 21:41:51,410 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 21:41:51,410 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 21:41:51,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 21:41:51,496 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 21:41:51,497 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 21:41:51,741 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 21:41:51,805 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 21:41:51,805 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 21:41:51,805 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:41:51 BoogieIcfgContainer
[2023-12-20 21:41:51,806 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 21:41:51,807 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 21:41:51,807 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 21:41:51,809 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 21:41:51,809 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:41:51" (1/3) ...
[2023-12-20 21:41:51,810 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17248570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:41:51, skipping insertion in model container
[2023-12-20 21:41:51,810 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:41:51" (2/3) ...
[2023-12-20 21:41:51,810 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17248570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:41:51, skipping insertion in model container
[2023-12-20 21:41:51,810 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:41:51" (3/3) ...
[2023-12-20 21:41:51,811 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-45.i
[2023-12-20 21:41:51,822 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 21:41:51,822 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 21:41:51,854 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 21:41:51,859 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;@2231df27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 21:41:51,859 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 21:41:51,862 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 92 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2023-12-20 21:41:51,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2023-12-20 21:41:51,882 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:51,882 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:51,883 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:51,886 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:51,886 INFO  L85        PathProgramCache]: Analyzing trace with hash -863377174, now seen corresponding path program 1 times
[2023-12-20 21:41:51,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:51,893 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849264217]
[2023-12-20 21:41:51,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:51,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:52,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:52,106 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:41:52,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849264217]
[2023-12-20 21:41:52,106 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 21:41:52,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338976147]
[2023-12-20 21:41:52,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:52,107 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:52,107 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:52,109 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 21:41:52,116 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 21:41:52,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:52,294 INFO  L262         TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 21:41:52,301 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:41:52,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked.
[2023-12-20 21:41:52,360 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:41:52,361 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338976147] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:41:52,361 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:41:52,361 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 21:41:52,364 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003516924]
[2023-12-20 21:41:52,365 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:41:52,369 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 21:41:52,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:41:52,396 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 21:41:52,397 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 21:41:52,399 INFO  L87              Difference]: Start difference. First operand  has 92 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35)
[2023-12-20 21:41:52,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:41:52,450 INFO  L93              Difference]: Finished difference Result 181 states and 329 transitions.
[2023-12-20 21:41:52,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 21:41:52,453 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 218
[2023-12-20 21:41:52,453 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:41:52,463 INFO  L225             Difference]: With dead ends: 181
[2023-12-20 21:41:52,463 INFO  L226             Difference]: Without dead ends: 90
[2023-12-20 21:41:52,467 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 217 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 21:41:52,470 INFO  L413           NwaCegarLoop]: 139 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, 139 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 21:41:52,471 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:41:52,482 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-12-20 21:41:52,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90.
[2023-12-20 21:41:52,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2023-12-20 21:41:52,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 142 transitions.
[2023-12-20 21:41:52,516 INFO  L78                 Accepts]: Start accepts. Automaton has 90 states and 142 transitions. Word has length 218
[2023-12-20 21:41:52,517 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:41:52,517 INFO  L495      AbstractCegarLoop]: Abstraction has 90 states and 142 transitions.
[2023-12-20 21:41:52,517 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35)
[2023-12-20 21:41:52,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 90 states and 142 transitions.
[2023-12-20 21:41:52,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2023-12-20 21:41:52,520 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:52,520 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:52,541 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 21:41:52,726 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 21:41:52,727 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:52,727 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:52,727 INFO  L85        PathProgramCache]: Analyzing trace with hash -1809819040, now seen corresponding path program 1 times
[2023-12-20 21:41:52,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:52,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482432565]
[2023-12-20 21:41:52,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:52,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:52,804 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:41:52,804 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5641479]
[2023-12-20 21:41:52,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:52,805 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:52,805 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:52,806 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 21:41:52,838 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 21:41:52,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:52,928 INFO  L262         TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-20 21:41:52,933 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:41:52,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked.
[2023-12-20 21:41:52,985 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:41:52,985 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:41:52,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482432565]
[2023-12-20 21:41:52,985 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:41:52,985 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5641479]
[2023-12-20 21:41:52,985 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [5641479] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:41:52,985 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:41:52,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-20 21:41:52,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161199087]
[2023-12-20 21:41:52,986 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:41:52,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 21:41:52,988 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:41:52,988 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 21:41:52,989 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 21:41:52,989 INFO  L87              Difference]: Start difference. First operand 90 states and 142 transitions. Second operand  has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:53,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:41:53,062 INFO  L93              Difference]: Finished difference Result 263 states and 414 transitions.
[2023-12-20 21:41:53,062 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 21:41:53,062 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 218
[2023-12-20 21:41:53,064 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:41:53,065 INFO  L225             Difference]: With dead ends: 263
[2023-12-20 21:41:53,066 INFO  L226             Difference]: Without dead ends: 174
[2023-12-20 21:41:53,066 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 21:41:53,067 INFO  L413           NwaCegarLoop]: 138 mSDtfsCounter, 131 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 21:41:53,067 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 256 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:41:53,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2023-12-20 21:41:53,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172.
[2023-12-20 21:41:53,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 172 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 99 states have internal predecessors, (127), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70)
[2023-12-20 21:41:53,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 267 transitions.
[2023-12-20 21:41:53,121 INFO  L78                 Accepts]: Start accepts. Automaton has 172 states and 267 transitions. Word has length 218
[2023-12-20 21:41:53,121 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:41:53,121 INFO  L495      AbstractCegarLoop]: Abstraction has 172 states and 267 transitions.
[2023-12-20 21:41:53,122 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:53,122 INFO  L276                IsEmpty]: Start isEmpty. Operand 172 states and 267 transitions.
[2023-12-20 21:41:53,124 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2023-12-20 21:41:53,124 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:53,124 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:53,132 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 21:41:53,332 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 21:41:53,332 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:53,332 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:53,332 INFO  L85        PathProgramCache]: Analyzing trace with hash 920094241, now seen corresponding path program 1 times
[2023-12-20 21:41:53,333 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:53,333 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985117857]
[2023-12-20 21:41:53,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:53,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:53,382 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:41:53,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137045016]
[2023-12-20 21:41:53,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:53,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:53,382 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:53,389 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 21:41:53,416 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 21:41:53,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:53,517 INFO  L262         TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-20 21:41:53,526 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:41:54,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked.
[2023-12-20 21:41:54,085 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:41:54,085 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:41:54,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985117857]
[2023-12-20 21:41:54,086 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:41:54,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137045016]
[2023-12-20 21:41:54,086 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137045016] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:41:54,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:41:54,086 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 21:41:54,086 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37361620]
[2023-12-20 21:41:54,086 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:41:54,088 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 21:41:54,088 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:41:54,089 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 21:41:54,089 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 21:41:54,089 INFO  L87              Difference]: Start difference. First operand 172 states and 267 transitions. Second operand  has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:54,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:41:54,175 INFO  L93              Difference]: Finished difference Result 414 states and 645 transitions.
[2023-12-20 21:41:54,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 21:41:54,176 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220
[2023-12-20 21:41:54,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:41:54,182 INFO  L225             Difference]: With dead ends: 414
[2023-12-20 21:41:54,182 INFO  L226             Difference]: Without dead ends: 243
[2023-12-20 21:41:54,185 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 21:41:54,187 INFO  L413           NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:41:54,190 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 244 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:41:54,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2023-12-20 21:41:54,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235.
[2023-12-20 21:41:54,232 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 235 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 126 states have internal predecessors, (154), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105)
[2023-12-20 21:41:54,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 364 transitions.
[2023-12-20 21:41:54,234 INFO  L78                 Accepts]: Start accepts. Automaton has 235 states and 364 transitions. Word has length 220
[2023-12-20 21:41:54,236 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:41:54,236 INFO  L495      AbstractCegarLoop]: Abstraction has 235 states and 364 transitions.
[2023-12-20 21:41:54,236 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:54,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 235 states and 364 transitions.
[2023-12-20 21:41:54,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2023-12-20 21:41:54,243 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:54,243 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:54,251 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 21:41:54,464 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 21:41:54,465 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:54,465 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:54,465 INFO  L85        PathProgramCache]: Analyzing trace with hash 1342796067, now seen corresponding path program 1 times
[2023-12-20 21:41:54,465 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:54,465 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487636031]
[2023-12-20 21:41:54,465 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:54,465 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:54,490 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:41:54,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945073698]
[2023-12-20 21:41:54,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:54,490 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:54,491 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:54,491 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 21:41:54,508 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 21:41:54,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:54,606 INFO  L262         TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-20 21:41:54,610 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:41:55,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked.
[2023-12-20 21:41:55,820 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:41:55,821 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:41:55,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487636031]
[2023-12-20 21:41:55,822 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:41:55,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945073698]
[2023-12-20 21:41:55,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945073698] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:41:55,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:41:55,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-20 21:41:55,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143925498]
[2023-12-20 21:41:55,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:41:55,823 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-20 21:41:55,823 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:41:55,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-20 21:41:55,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:41:55,824 INFO  L87              Difference]: Start difference. First operand 235 states and 364 transitions. Second operand  has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:56,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:41:56,219 INFO  L93              Difference]: Finished difference Result 471 states and 722 transitions.
[2023-12-20 21:41:56,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-20 21:41:56,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220
[2023-12-20 21:41:56,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:41:56,221 INFO  L225             Difference]: With dead ends: 471
[2023-12-20 21:41:56,221 INFO  L226             Difference]: Without dead ends: 300
[2023-12-20 21:41:56,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-20 21:41:56,222 INFO  L413           NwaCegarLoop]: 139 mSDtfsCounter, 190 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-20 21:41:56,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 231 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-20 21:41:56,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 300 states.
[2023-12-20 21:41:56,246 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296.
[2023-12-20 21:41:56,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 296 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 171 states have internal predecessors, (209), 121 states have call successors, (121), 5 states have call predecessors, (121), 5 states have return successors, (121), 119 states have call predecessors, (121), 121 states have call successors, (121)
[2023-12-20 21:41:56,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 451 transitions.
[2023-12-20 21:41:56,248 INFO  L78                 Accepts]: Start accepts. Automaton has 296 states and 451 transitions. Word has length 220
[2023-12-20 21:41:56,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:41:56,248 INFO  L495      AbstractCegarLoop]: Abstraction has 296 states and 451 transitions.
[2023-12-20 21:41:56,249 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-20 21:41:56,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 296 states and 451 transitions.
[2023-12-20 21:41:56,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2023-12-20 21:41:56,250 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:56,250 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:56,258 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 21:41:56,455 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 21:41:56,456 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:56,456 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:56,456 INFO  L85        PathProgramCache]: Analyzing trace with hash 13703963, now seen corresponding path program 1 times
[2023-12-20 21:41:56,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:56,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939054538]
[2023-12-20 21:41:56,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:56,457 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:56,490 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:41:56,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72420185]
[2023-12-20 21:41:56,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:56,490 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:56,490 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:56,491 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 21:41:56,512 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 21:41:56,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:56,610 INFO  L262         TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-20 21:41:56,613 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:41:56,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 1182 proven. 60 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked.
[2023-12-20 21:41:56,968 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 21:41:57,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked.
[2023-12-20 21:41:57,211 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:41:57,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939054538]
[2023-12-20 21:41:57,211 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:41:57,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72420185]
[2023-12-20 21:41:57,211 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [72420185] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 21:41:57,211 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 21:41:57,211 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11
[2023-12-20 21:41:57,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757551654]
[2023-12-20 21:41:57,211 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 21:41:57,212 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-20 21:41:57,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:41:57,212 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-20 21:41:57,212 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-12-20 21:41:57,213 INFO  L87              Difference]: Start difference. First operand 296 states and 451 transitions. Second operand  has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70)
[2023-12-20 21:41:57,403 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:41:57,404 INFO  L93              Difference]: Finished difference Result 439 states and 655 transitions.
[2023-12-20 21:41:57,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-20 21:41:57,405 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) Word has length 220
[2023-12-20 21:41:57,405 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:41:57,407 INFO  L225             Difference]: With dead ends: 439
[2023-12-20 21:41:57,407 INFO  L226             Difference]: Without dead ends: 207
[2023-12-20 21:41:57,408 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210
[2023-12-20 21:41:57,409 INFO  L413           NwaCegarLoop]: 86 mSDtfsCounter, 171 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:41:57,410 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 190 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:41:57,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 207 states.
[2023-12-20 21:41:57,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191.
[2023-12-20 21:41:57,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 191 states, 107 states have (on average 1.158878504672897) internal successors, (124), 108 states have internal predecessors, (124), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78)
[2023-12-20 21:41:57,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions.
[2023-12-20 21:41:57,433 INFO  L78                 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 220
[2023-12-20 21:41:57,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:41:57,433 INFO  L495      AbstractCegarLoop]: Abstraction has 191 states and 280 transitions.
[2023-12-20 21:41:57,433 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70)
[2023-12-20 21:41:57,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions.
[2023-12-20 21:41:57,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2023-12-20 21:41:57,434 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:41:57,435 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:57,446 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 21:41:57,642 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 21:41:57,643 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:41:57,643 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:41:57,643 INFO  L85        PathProgramCache]: Analyzing trace with hash -1333595538, now seen corresponding path program 1 times
[2023-12-20 21:41:57,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:41:57,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692816788]
[2023-12-20 21:41:57,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:57,643 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:41:57,676 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:41:57,676 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691770680]
[2023-12-20 21:41:57,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:41:57,676 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:41:57,676 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:41:57,677 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 21:41:57,682 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 21:41:57,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:41:57,818 INFO  L262         TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 54 conjunts are in the unsatisfiable core
[2023-12-20 21:41:57,829 INFO  L285         TraceCheckSpWp]: Computing forward predicates...