/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-4.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-19 06:20:43,746 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-19 06:20:43,800 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-19 06:20:43,804 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-19 06:20:43,805 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-19 06:20:43,825 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-19 06:20:43,826 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-19 06:20:43,826 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-19 06:20:43,827 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-19 06:20:43,827 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-19 06:20:43,827 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-19 06:20:43,828 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-19 06:20:43,829 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-19 06:20:43,829 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-19 06:20:43,829 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-19 06:20:43,830 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-19 06:20:43,830 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-19 06:20:43,830 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-19 06:20:43,831 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-19 06:20:43,831 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-19 06:20:43,831 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-19 06:20:43,832 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-19 06:20:43,832 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-19 06:20:43,833 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-19 06:20:43,839 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-19 06:20:43,840 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-19 06:20:43,840 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-19 06:20:43,840 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-19 06:20:43,840 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-19 06:20:43,841 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-19 06:20:43,841 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-19 06:20:43,841 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-19 06:20:43,842 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 06:20:43,842 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-19 06:20:43,842 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-19 06:20:43,842 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-19 06:20:43,843 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-19 06:20:43,843 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-19 06:20:43,843 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-19 06:20:43,843 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-19 06:20:43,844 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-19 06:20:43,847 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-19 06:20:43,848 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-19 06:20:43,848 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-19 06:20:44,097 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-19 06:20:44,122 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-19 06:20:44,125 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-19 06:20:44,126 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-19 06:20:44,127 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-19 06:20:44,128 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-4.i
[2023-12-19 06:20:45,455 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-19 06:20:45,712 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-19 06:20:45,713 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-4.i
[2023-12-19 06:20:45,729 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097552620/c14244bc48d1436e9fd2603a19a1cb03/FLAG51ece02d6
[2023-12-19 06:20:45,748 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097552620/c14244bc48d1436e9fd2603a19a1cb03
[2023-12-19 06:20:45,751 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-19 06:20:45,752 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-19 06:20:45,753 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-19 06:20:45,753 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-19 06:20:45,758 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-19 06:20:45,759 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:20:45" (1/1) ...
[2023-12-19 06:20:45,761 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476f4935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:45, skipping insertion in model container
[2023-12-19 06:20:45,761 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:20:45" (1/1) ...
[2023-12-19 06:20:45,807 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-19 06:20:45,936 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_fillercodesize_ps-cn-100_file-4.i[915,928]
[2023-12-19 06:20:46,041 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 06:20:46,059 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-19 06:20:46,069 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_fillercodesize_ps-cn-100_file-4.i[915,928]
[2023-12-19 06:20:46,114 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 06:20:46,140 INFO  L206         MainTranslator]: Completed translation
[2023-12-19 06:20:46,140 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46 WrapperNode
[2023-12-19 06:20:46,141 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-19 06:20:46,142 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-19 06:20:46,142 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-19 06:20:46,142 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-19 06:20:46,149 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,161 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,224 INFO  L138                Inliner]: procedures = 26, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 413
[2023-12-19 06:20:46,237 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-19 06:20:46,238 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-19 06:20:46,238 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-19 06:20:46,238 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-19 06:20:46,247 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,247 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,251 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,292 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].
[2023-12-19 06:20:46,292 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,293 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,309 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,313 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,317 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,335 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,343 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-19 06:20:46,344 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-19 06:20:46,344 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-19 06:20:46,344 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-19 06:20:46,345 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (1/1) ...
[2023-12-19 06:20:46,351 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 06:20:46,362 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 06:20:46,379 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)
[2023-12-19 06:20:46,406 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
[2023-12-19 06:20:46,417 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-19 06:20:46,417 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-19 06:20:46,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-19 06:20:46,418 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-19 06:20:46,418 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-19 06:20:46,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-19 06:20:46,549 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-19 06:20:46,551 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-19 06:20:47,131 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-19 06:20:47,211 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-19 06:20:47,211 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-19 06:20:47,211 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:20:47 BoogieIcfgContainer
[2023-12-19 06:20:47,211 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-19 06:20:47,214 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-19 06:20:47,214 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-19 06:20:47,217 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-19 06:20:47,217 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:20:45" (1/3) ...
[2023-12-19 06:20:47,219 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f3fa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:20:47, skipping insertion in model container
[2023-12-19 06:20:47,219 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:20:46" (2/3) ...
[2023-12-19 06:20:47,219 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f3fa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:20:47, skipping insertion in model container
[2023-12-19 06:20:47,220 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:20:47" (3/3) ...
[2023-12-19 06:20:47,221 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-4.i
[2023-12-19 06:20:47,237 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-19 06:20:47,237 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-19 06:20:47,294 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-19 06:20:47,302 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;@10bdd4a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-19 06:20:47,303 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-19 06:20:47,309 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 170 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 94 states have internal predecessors, (137), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74)
[2023-12-19 06:20:47,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 440
[2023-12-19 06:20:47,336 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 06:20:47,337 INFO  L195           NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 06:20:47,338 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 06:20:47,342 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 06:20:47,343 INFO  L85        PathProgramCache]: Analyzing trace with hash 994625498, now seen corresponding path program 1 times
[2023-12-19 06:20:47,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 06:20:47,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462482915]
[2023-12-19 06:20:47,353 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:47,354 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 06:20:47,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 06:20:47,771 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 06:20:47,771 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462482915]
[2023-12-19 06:20:47,772 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-19 06:20:47,772 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358040979]
[2023-12-19 06:20:47,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:47,772 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 06:20:47,773 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 06:20:47,782 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)
[2023-12-19 06:20:47,803 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-19 06:20:48,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 06:20:48,103 INFO  L262         TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-19 06:20:48,122 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 06:20:48,211 INFO  L134       CoverageAnalysis]: Checked inductivity of 10804 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked.
[2023-12-19 06:20:48,211 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 06:20:48,212 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358040979] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 06:20:48,212 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 06:20:48,213 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 06:20:48,215 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487694683]
[2023-12-19 06:20:48,215 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 06:20:48,220 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-19 06:20:48,220 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 06:20:48,250 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-19 06:20:48,250 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 06:20:48,253 INFO  L87              Difference]: Start difference. First operand  has 170 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 94 states have internal predecessors, (137), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand  has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74)
[2023-12-19 06:20:48,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 06:20:48,346 INFO  L93              Difference]: Finished difference Result 337 states and 642 transitions.
[2023-12-19 06:20:48,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-19 06:20:48,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) Word has length 439
[2023-12-19 06:20:48,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 06:20:48,367 INFO  L225             Difference]: With dead ends: 337
[2023-12-19 06:20:48,368 INFO  L226             Difference]: Without dead ends: 168
[2023-12-19 06:20:48,378 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 06:20:48,381 INFO  L413           NwaCegarLoop]: 276 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, 276 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
[2023-12-19 06:20:48,381 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 06:20:48,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2023-12-19 06:20:48,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168.
[2023-12-19 06:20:48,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 168 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74)
[2023-12-19 06:20:48,440 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 279 transitions.
[2023-12-19 06:20:48,442 INFO  L78                 Accepts]: Start accepts. Automaton has 168 states and 279 transitions. Word has length 439
[2023-12-19 06:20:48,442 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 06:20:48,442 INFO  L495      AbstractCegarLoop]: Abstraction has 168 states and 279 transitions.
[2023-12-19 06:20:48,443 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74)
[2023-12-19 06:20:48,443 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states and 279 transitions.
[2023-12-19 06:20:48,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 441
[2023-12-19 06:20:48,454 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 06:20:48,455 INFO  L195           NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 06:20:48,466 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-19 06:20:48,664 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
[2023-12-19 06:20:48,665 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 06:20:48,665 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 06:20:48,665 INFO  L85        PathProgramCache]: Analyzing trace with hash 1855340033, now seen corresponding path program 1 times
[2023-12-19 06:20:48,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 06:20:48,666 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162704086]
[2023-12-19 06:20:48,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:48,666 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 06:20:48,806 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 06:20:48,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179100977]
[2023-12-19 06:20:48,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:48,808 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 06:20:48,808 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 06:20:48,809 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)
[2023-12-19 06:20:48,828 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-19 06:20:49,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 06:20:49,078 INFO  L262         TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-19 06:20:49,098 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 06:20:49,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 10804 backedges. 363 proven. 216 refuted. 0 times theorem prover too weak. 10225 trivial. 0 not checked.
[2023-12-19 06:20:49,825 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-19 06:20:50,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 10804 backedges. 3 proven. 216 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked.
[2023-12-19 06:20:50,261 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 06:20:50,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162704086]
[2023-12-19 06:20:50,261 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 06:20:50,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179100977]
[2023-12-19 06:20:50,262 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179100977] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-19 06:20:50,262 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-19 06:20:50,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2023-12-19 06:20:50,263 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444675090]
[2023-12-19 06:20:50,263 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-19 06:20:50,269 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-19 06:20:50,270 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 06:20:50,272 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-19 06:20:50,272 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-19 06:20:50,272 INFO  L87              Difference]: Start difference. First operand 168 states and 279 transitions. Second operand  has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147)
[2023-12-19 06:20:51,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 06:20:51,404 INFO  L93              Difference]: Finished difference Result 517 states and 847 transitions.
[2023-12-19 06:20:51,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2023-12-19 06:20:51,405 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 440
[2023-12-19 06:20:51,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 06:20:51,411 INFO  L225             Difference]: With dead ends: 517
[2023-12-19 06:20:51,411 INFO  L226             Difference]: Without dead ends: 350
[2023-12-19 06:20:51,413 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 869 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462
[2023-12-19 06:20:51,414 INFO  L413           NwaCegarLoop]: 378 mSDtfsCounter, 385 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-12-19 06:20:51,414 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1395 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-12-19 06:20:51,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 350 states.
[2023-12-19 06:20:51,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 340.
[2023-12-19 06:20:51,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 340 states, 187 states have (on average 1.4010695187165776) internal successors, (262), 187 states have internal predecessors, (262), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148)
[2023-12-19 06:20:51,518 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 558 transitions.
[2023-12-19 06:20:51,519 INFO  L78                 Accepts]: Start accepts. Automaton has 340 states and 558 transitions. Word has length 440
[2023-12-19 06:20:51,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 06:20:51,520 INFO  L495      AbstractCegarLoop]: Abstraction has 340 states and 558 transitions.
[2023-12-19 06:20:51,521 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147)
[2023-12-19 06:20:51,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 340 states and 558 transitions.
[2023-12-19 06:20:51,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 441
[2023-12-19 06:20:51,528 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 06:20:51,528 INFO  L195           NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 06:20:51,538 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-19 06:20:51,737 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
[2023-12-19 06:20:51,738 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 06:20:51,738 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 06:20:51,738 INFO  L85        PathProgramCache]: Analyzing trace with hash 1855399615, now seen corresponding path program 1 times
[2023-12-19 06:20:51,739 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 06:20:51,739 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516003832]
[2023-12-19 06:20:51,739 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:51,739 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 06:20:51,807 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 06:20:51,807 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511652539]
[2023-12-19 06:20:51,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 06:20:51,808 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 06:20:51,808 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 06:20:51,809 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)
[2023-12-19 06:20:51,830 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-19 06:20:52,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 06:20:52,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-19 06:20:52,055 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 06:20:53,063 INFO  L134       CoverageAnalysis]: Checked inductivity of 10804 backedges. 363 proven. 216 refuted. 0 times theorem prover too weak. 10225 trivial. 0 not checked.
[2023-12-19 06:20:53,064 INFO  L327         TraceCheckSpWp]: Computing backward predicates...