/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_loopvsstraightlinecode_50-while_file-64.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-19 12:16:05,142 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-19 12:16:05,195 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 12:16:05,199 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-19 12:16:05,200 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-19 12:16:05,225 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-19 12:16:05,226 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-19 12:16:05,226 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-19 12:16:05,226 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-19 12:16:05,229 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-19 12:16:05,229 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-19 12:16:05,229 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-19 12:16:05,230 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-19 12:16:05,230 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-19 12:16:05,231 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-19 12:16:05,231 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-19 12:16:05,231 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-19 12:16:05,231 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-19 12:16:05,231 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-19 12:16:05,232 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-19 12:16:05,232 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-19 12:16:05,232 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-19 12:16:05,233 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-19 12:16:05,234 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-19 12:16:05,234 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 12:16:05,235 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-19 12:16:05,235 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-19 12:16:05,236 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-19 12:16:05,236 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-19 12:16:05,236 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-19 12:16:05,236 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-19 12:16:05,236 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-19 12:16:05,237 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-19 12:16:05,418 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-19 12:16:05,432 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-19 12:16:05,433 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-19 12:16:05,434 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-19 12:16:05,434 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-19 12:16:05,435 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i
[2023-12-19 12:16:06,451 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-19 12:16:06,612 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-19 12:16:06,613 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i
[2023-12-19 12:16:06,618 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d0f7c90/905e7e82665043d1b6cf94b9e0a920c3/FLAGa8f34e393
[2023-12-19 12:16:06,631 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d0f7c90/905e7e82665043d1b6cf94b9e0a920c3
[2023-12-19 12:16:06,633 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-19 12:16:06,634 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-19 12:16:06,635 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-19 12:16:06,635 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-19 12:16:06,638 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-19 12:16:06,639 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,640 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fc9cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06, skipping insertion in model container
[2023-12-19 12:16:06,640 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,671 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-19 12:16:06,772 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_loopvsstraightlinecode_50-while_file-64.i[915,928]
[2023-12-19 12:16:06,804 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 12:16:06,812 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-19 12:16:06,819 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_loopvsstraightlinecode_50-while_file-64.i[915,928]
[2023-12-19 12:16:06,843 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 12:16:06,859 INFO  L206         MainTranslator]: Completed translation
[2023-12-19 12:16:06,859 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06 WrapperNode
[2023-12-19 12:16:06,859 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-19 12:16:06,860 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-19 12:16:06,860 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-19 12:16:06,860 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-19 12:16:06,866 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,880 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,905 INFO  L138                Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 170
[2023-12-19 12:16:06,906 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-19 12:16:06,906 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-19 12:16:06,906 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-19 12:16:06,906 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-19 12:16:06,918 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,918 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,920 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,929 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 12:16:06,929 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,929 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,932 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,935 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,944 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,945 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,947 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-19 12:16:06,947 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-19 12:16:06,948 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-19 12:16:06,948 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-19 12:16:06,948 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (1/1) ...
[2023-12-19 12:16:06,952 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 12:16:06,959 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:06,969 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 12:16:06,991 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-19 12:16:06,991 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-19 12:16:06,991 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-19 12:16:06,992 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 12:16:06,999 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-19 12:16:06,999 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-19 12:16:06,999 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-19 12:16:07,083 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-19 12:16:07,084 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-19 12:16:07,305 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-19 12:16:07,342 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-19 12:16:07,342 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-19 12:16:07,343 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:16:07 BoogieIcfgContainer
[2023-12-19 12:16:07,343 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-19 12:16:07,344 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-19 12:16:07,344 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-19 12:16:07,347 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-19 12:16:07,347 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:16:06" (1/3) ...
[2023-12-19 12:16:07,347 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48da102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:16:07, skipping insertion in model container
[2023-12-19 12:16:07,347 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:06" (2/3) ...
[2023-12-19 12:16:07,348 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48da102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:16:07, skipping insertion in model container
[2023-12-19 12:16:07,348 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:16:07" (3/3) ...
[2023-12-19 12:16:07,348 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-64.i
[2023-12-19 12:16:07,360 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-19 12:16:07,360 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-19 12:16:07,395 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-19 12:16:07,399 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;@2b198, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-19 12:16:07,400 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-19 12:16:07,403 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 67 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:07,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-12-19 12:16:07,413 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:07,413 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:07,414 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:07,417 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:07,418 INFO  L85        PathProgramCache]: Analyzing trace with hash 2016602736, now seen corresponding path program 1 times
[2023-12-19 12:16:07,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:07,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214761373]
[2023-12-19 12:16:07,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:07,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:07,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:07,618 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 12:16:07,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214761373]
[2023-12-19 12:16:07,619 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-19 12:16:07,619 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195065559]
[2023-12-19 12:16:07,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:07,619 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:07,619 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:07,623 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 12:16:07,629 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 12:16:07,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:07,769 INFO  L262         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-19 12:16:07,782 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 12:16:07,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2023-12-19 12:16:07,833 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 12:16:07,833 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [195065559] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 12:16:07,833 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 12:16:07,833 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 12:16:07,835 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729122432]
[2023-12-19 12:16:07,835 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 12:16:07,838 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-19 12:16:07,839 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 12:16:07,867 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-19 12:16:07,868 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 12:16:07,869 INFO  L87              Difference]: Start difference. First operand  has 67 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-19 12:16:07,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 12:16:07,895 INFO  L93              Difference]: Finished difference Result 131 states and 238 transitions.
[2023-12-19 12:16:07,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-19 12:16:07,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 159
[2023-12-19 12:16:07,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 12:16:07,902 INFO  L225             Difference]: With dead ends: 131
[2023-12-19 12:16:07,902 INFO  L226             Difference]: Without dead ends: 65
[2023-12-19 12:16:07,904 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 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 12:16:07,907 INFO  L413           NwaCegarLoop]: 99 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, 99 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 12:16:07,907 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 12:16:07,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2023-12-19 12:16:07,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2023-12-19 12:16:07,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:07,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 102 transitions.
[2023-12-19 12:16:07,942 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 102 transitions. Word has length 159
[2023-12-19 12:16:07,943 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 12:16:07,943 INFO  L495      AbstractCegarLoop]: Abstraction has 65 states and 102 transitions.
[2023-12-19 12:16:07,943 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-19 12:16:07,943 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 102 transitions.
[2023-12-19 12:16:07,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-12-19 12:16:07,947 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:07,947 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:07,955 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-19 12:16:08,153 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 12:16:08,153 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:08,154 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:08,154 INFO  L85        PathProgramCache]: Analyzing trace with hash 656421168, now seen corresponding path program 1 times
[2023-12-19 12:16:08,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:08,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067343031]
[2023-12-19 12:16:08,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:08,154 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:08,223 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 12:16:08,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130176120]
[2023-12-19 12:16:08,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:08,224 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:08,224 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:08,228 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 12:16:08,247 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 12:16:08,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:08,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-19 12:16:08,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 12:16:10,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-19 12:16:10,365 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 12:16:10,366 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 12:16:10,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067343031]
[2023-12-19 12:16:10,366 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 12:16:10,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130176120]
[2023-12-19 12:16:10,366 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130176120] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 12:16:10,366 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 12:16:10,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-19 12:16:10,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714375666]
[2023-12-19 12:16:10,367 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 12:16:10,367 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-19 12:16:10,367 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 12:16:10,368 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-19 12:16:10,368 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-19 12:16:10,368 INFO  L87              Difference]: Start difference. First operand 65 states and 102 transitions. Second operand  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:10,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 12:16:10,517 INFO  L93              Difference]: Finished difference Result 243 states and 378 transitions.
[2023-12-19 12:16:10,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-19 12:16:10,518 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 159
[2023-12-19 12:16:10,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 12:16:10,520 INFO  L225             Difference]: With dead ends: 243
[2023-12-19 12:16:10,520 INFO  L226             Difference]: Without dead ends: 179
[2023-12-19 12:16:10,521 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-19 12:16:10,522 INFO  L413           NwaCegarLoop]: 161 mSDtfsCounter, 186 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 12:16:10,522 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 432 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 12:16:10,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2023-12-19 12:16:10,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 69.
[2023-12-19 12:16:10,533 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:10,534 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions.
[2023-12-19 12:16:10,534 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 159
[2023-12-19 12:16:10,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 12:16:10,535 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 108 transitions.
[2023-12-19 12:16:10,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:10,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions.
[2023-12-19 12:16:10,537 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-12-19 12:16:10,537 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:10,537 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:10,546 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-19 12:16:10,742 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 12:16:10,743 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:10,743 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:10,743 INFO  L85        PathProgramCache]: Analyzing trace with hash -1863538766, now seen corresponding path program 1 times
[2023-12-19 12:16:10,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:10,744 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430269062]
[2023-12-19 12:16:10,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:10,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:10,784 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 12:16:10,784 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515448757]
[2023-12-19 12:16:10,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:10,785 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:10,785 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:10,788 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 12:16:10,824 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 12:16:10,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:10,870 INFO  L262         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-19 12:16:10,875 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 12:16:11,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-19 12:16:11,731 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 12:16:11,732 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 12:16:11,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430269062]
[2023-12-19 12:16:11,732 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 12:16:11,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515448757]
[2023-12-19 12:16:11,732 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [515448757] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 12:16:11,732 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 12:16:11,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-19 12:16:11,732 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658561500]
[2023-12-19 12:16:11,733 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 12:16:11,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-19 12:16:11,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 12:16:11,734 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-19 12:16:11,734 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-19 12:16:11,734 INFO  L87              Difference]: Start difference. First operand 69 states and 108 transitions. Second operand  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:11,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 12:16:11,880 INFO  L93              Difference]: Finished difference Result 247 states and 383 transitions.
[2023-12-19 12:16:11,881 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-19 12:16:11,881 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 159
[2023-12-19 12:16:11,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 12:16:11,886 INFO  L225             Difference]: With dead ends: 247
[2023-12-19 12:16:11,886 INFO  L226             Difference]: Without dead ends: 179
[2023-12-19 12:16:11,888 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-19 12:16:11,890 INFO  L413           NwaCegarLoop]: 172 mSDtfsCounter, 174 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 12:16:11,893 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 450 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 12:16:11,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2023-12-19 12:16:11,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 69.
[2023-12-19 12:16:11,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:11,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions.
[2023-12-19 12:16:11,908 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 159
[2023-12-19 12:16:11,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 12:16:11,908 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 108 transitions.
[2023-12-19 12:16:11,908 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:11,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions.
[2023-12-19 12:16:11,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-12-19 12:16:11,910 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:11,910 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:11,917 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-19 12:16:12,117 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
[2023-12-19 12:16:12,118 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:12,118 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:12,118 INFO  L85        PathProgramCache]: Analyzing trace with hash 1088745520, now seen corresponding path program 1 times
[2023-12-19 12:16:12,118 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:12,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384539384]
[2023-12-19 12:16:12,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:12,119 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:12,157 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 12:16:12,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849947655]
[2023-12-19 12:16:12,158 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:12,158 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:12,158 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:12,159 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)
[2023-12-19 12:16:12,164 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-19 12:16:12,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:12,249 INFO  L262         TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-19 12:16:12,252 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 12:16:14,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-19 12:16:14,648 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 12:16:14,648 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 12:16:14,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384539384]
[2023-12-19 12:16:14,648 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 12:16:14,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849947655]
[2023-12-19 12:16:14,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849947655] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 12:16:14,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 12:16:14,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-19 12:16:14,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857464505]
[2023-12-19 12:16:14,649 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 12:16:14,649 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-19 12:16:14,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 12:16:14,650 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-19 12:16:14,650 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-19 12:16:14,650 INFO  L87              Difference]: Start difference. First operand 69 states and 108 transitions. Second operand  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:14,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 12:16:14,799 INFO  L93              Difference]: Finished difference Result 247 states and 383 transitions.
[2023-12-19 12:16:14,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-19 12:16:14,799 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 159
[2023-12-19 12:16:14,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 12:16:14,802 INFO  L225             Difference]: With dead ends: 247
[2023-12-19 12:16:14,802 INFO  L226             Difference]: Without dead ends: 179
[2023-12-19 12:16:14,802 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-19 12:16:14,804 INFO  L413           NwaCegarLoop]: 244 mSDtfsCounter, 181 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 12:16:14,804 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 593 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 12:16:14,804 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2023-12-19 12:16:14,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 69.
[2023-12-19 12:16:14,821 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:14,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions.
[2023-12-19 12:16:14,821 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 159
[2023-12-19 12:16:14,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 12:16:14,822 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 108 transitions.
[2023-12-19 12:16:14,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:14,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions.
[2023-12-19 12:16:14,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2023-12-19 12:16:14,823 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:14,823 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:14,835 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-19 12:16:15,030 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
[2023-12-19 12:16:15,030 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:15,030 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:15,031 INFO  L85        PathProgramCache]: Analyzing trace with hash -1431214414, now seen corresponding path program 1 times
[2023-12-19 12:16:15,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:15,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295209625]
[2023-12-19 12:16:15,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:15,031 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:15,049 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 12:16:15,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675240634]
[2023-12-19 12:16:15,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:15,050 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:15,050 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:15,051 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)
[2023-12-19 12:16:15,053 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-19 12:16:15,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:15,127 INFO  L262         TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-19 12:16:15,130 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 12:16:15,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-19 12:16:15,821 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 12:16:15,822 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 12:16:15,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295209625]
[2023-12-19 12:16:15,822 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 12:16:15,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675240634]
[2023-12-19 12:16:15,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [675240634] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 12:16:15,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 12:16:15,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-19 12:16:15,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947897717]
[2023-12-19 12:16:15,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 12:16:15,823 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-19 12:16:15,823 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 12:16:15,823 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-19 12:16:15,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-19 12:16:15,824 INFO  L87              Difference]: Start difference. First operand 69 states and 108 transitions. Second operand  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:15,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 12:16:15,923 INFO  L93              Difference]: Finished difference Result 204 states and 314 transitions.
[2023-12-19 12:16:15,923 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-19 12:16:15,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 159
[2023-12-19 12:16:15,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 12:16:15,925 INFO  L225             Difference]: With dead ends: 204
[2023-12-19 12:16:15,926 INFO  L226             Difference]: Without dead ends: 136
[2023-12-19 12:16:15,926 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-19 12:16:15,926 INFO  L413           NwaCegarLoop]: 192 mSDtfsCounter, 104 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 12:16:15,928 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 580 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 12:16:15,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2023-12-19 12:16:15,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 65.
[2023-12-19 12:16:15,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-19 12:16:15,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions.
[2023-12-19 12:16:15,940 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 159
[2023-12-19 12:16:15,941 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 12:16:15,941 INFO  L495      AbstractCegarLoop]: Abstraction has 65 states and 101 transitions.
[2023-12-19 12:16:15,941 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-19 12:16:15,941 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions.
[2023-12-19 12:16:15,942 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2023-12-19 12:16:15,942 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 12:16:15,942 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:15,950 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-19 12:16:16,147 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
[2023-12-19 12:16:16,148 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 12:16:16,148 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 12:16:16,148 INFO  L85        PathProgramCache]: Analyzing trace with hash -883188715, now seen corresponding path program 1 times
[2023-12-19 12:16:16,148 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 12:16:16,148 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935164541]
[2023-12-19 12:16:16,148 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:16,149 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 12:16:16,178 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 12:16:16,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394156577]
[2023-12-19 12:16:16,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 12:16:16,178 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 12:16:16,178 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 12:16:16,179 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)
[2023-12-19 12:16:16,211 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-19 12:16:16,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 12:16:16,263 INFO  L262         TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-19 12:16:16,266 INFO  L285         TraceCheckSpWp]: Computing forward predicates...