/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-98.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 18:44:33,325 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 18:44:33,424 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-20 18:44:33,431 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 18:44:33,432 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 18:44:33,473 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 18:44:33,474 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 18:44:33,474 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 18:44:33,475 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 18:44:33,477 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 18:44:33,478 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 18:44:33,478 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 18:44:33,478 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 18:44:33,479 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 18:44:33,480 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 18:44:33,480 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 18:44:33,480 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 18:44:33,480 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 18:44:33,480 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 18:44:33,481 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 18:44:33,481 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 18:44:33,482 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 18:44:33,482 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 18:44:33,482 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 18:44:33,482 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 18:44:33,482 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 18:44:33,483 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 18:44:33,483 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 18:44:33,483 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 18:44:33,483 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 18:44:33,484 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 18:44:33,484 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 18:44:33,484 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 18:44:33,484 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 18:44:33,485 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 18:44:33,500 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 18:44:33,500 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 18:44:33,500 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 18:44:33,771 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 18:44:33,788 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 18:44:33,790 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 18:44:33,790 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 18:44:33,791 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 18:44:33,791 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-98.i
[2023-12-20 18:44:34,903 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 18:44:35,052 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 18:44:35,053 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-98.i
[2023-12-20 18:44:35,063 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b39b4f8/3d495bc8a3b348289a7659882904a6bb/FLAG6fcb00f6c
[2023-12-20 18:44:35,077 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b39b4f8/3d495bc8a3b348289a7659882904a6bb
[2023-12-20 18:44:35,079 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 18:44:35,080 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 18:44:35,080 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 18:44:35,080 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 18:44:35,087 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 18:44:35,088 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,089 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dafb0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35, skipping insertion in model container
[2023-12-20 18:44:35,089 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,107 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 18:44:35,202 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_codestructure_dependencies_file-98.i[919,932]
[2023-12-20 18:44:35,257 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 18:44:35,276 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 18:44:35,289 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_codestructure_dependencies_file-98.i[919,932]
[2023-12-20 18:44:35,331 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 18:44:35,345 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 18:44:35,346 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35 WrapperNode
[2023-12-20 18:44:35,346 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 18:44:35,347 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 18:44:35,347 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 18:44:35,347 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 18:44:35,352 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,368 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,399 INFO  L138                Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148
[2023-12-20 18:44:35,400 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 18:44:35,400 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 18:44:35,400 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 18:44:35,401 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 18:44:35,409 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,409 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,417 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,429 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-20 18:44:35,429 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,429 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,434 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,436 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,437 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,438 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,440 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 18:44:35,441 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 18:44:35,441 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 18:44:35,441 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 18:44:35,442 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (1/1) ...
[2023-12-20 18:44:35,460 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 18:44:35,470 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:44:35,513 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-20 18:44:35,519 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-20 18:44:35,543 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 18:44:35,543 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 18:44:35,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 18:44:35,544 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 18:44:35,544 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 18:44:35,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 18:44:35,628 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 18:44:35,630 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 18:44:35,902 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 18:44:35,953 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 18:44:35,954 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 18:44:35,954 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:44:35 BoogieIcfgContainer
[2023-12-20 18:44:35,954 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 18:44:35,956 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 18:44:35,956 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 18:44:35,958 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 18:44:35,958 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:44:35" (1/3) ...
[2023-12-20 18:44:35,958 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6845e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:44:35, skipping insertion in model container
[2023-12-20 18:44:35,958 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:44:35" (2/3) ...
[2023-12-20 18:44:35,959 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6845e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:44:35, skipping insertion in model container
[2023-12-20 18:44:35,959 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:44:35" (3/3) ...
[2023-12-20 18:44:35,959 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-98.i
[2023-12-20 18:44:35,970 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 18:44:35,970 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 18:44:36,003 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 18:44:36,007 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;@10c814cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 18:44:36,007 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 18:44:36,010 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-20 18:44:36,019 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-20 18:44:36,019 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:44:36,020 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 18:44:36,020 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:44:36,024 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:44:36,024 INFO  L85        PathProgramCache]: Analyzing trace with hash 793785289, now seen corresponding path program 1 times
[2023-12-20 18:44:36,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:44:36,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274502211]
[2023-12-20 18:44:36,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:36,032 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:44:36,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:44:36,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:44:36,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274502211]
[2023-12-20 18:44:36,199 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 18:44:36,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865997218]
[2023-12-20 18:44:36,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:36,200 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:44:36,200 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:44:36,202 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 18:44:36,223 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-20 18:44:36,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:44:36,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 18:44:36,340 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:44:36,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked.
[2023-12-20 18:44:36,377 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 18:44:36,377 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865997218] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 18:44:36,378 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 18:44:36,378 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 18:44:36,379 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942564380]
[2023-12-20 18:44:36,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 18:44:36,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 18:44:36,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:44:36,399 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 18:44:36,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 18:44:36,401 INFO  L87              Difference]: Start difference. First operand  has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-20 18:44:36,444 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:44:36,444 INFO  L93              Difference]: Finished difference Result 119 states and 214 transitions.
[2023-12-20 18:44:36,445 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 18:44:36,446 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146
[2023-12-20 18:44:36,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:44:36,454 INFO  L225             Difference]: With dead ends: 119
[2023-12-20 18:44:36,454 INFO  L226             Difference]: Without dead ends: 59
[2023-12-20 18:44:36,457 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 18:44:36,459 INFO  L413           NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 18:44:36,459 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 18:44:36,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2023-12-20 18:44:36,485 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2023-12-20 18:44:36,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-20 18:44:36,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 91 transitions.
[2023-12-20 18:44:36,492 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 91 transitions. Word has length 146
[2023-12-20 18:44:36,492 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:44:36,493 INFO  L495      AbstractCegarLoop]: Abstraction has 59 states and 91 transitions.
[2023-12-20 18:44:36,493 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-20 18:44:36,493 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 91 transitions.
[2023-12-20 18:44:36,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-20 18:44:36,496 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:44:36,496 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 18:44:36,517 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-20 18:44:36,701 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-12-20 18:44:36,701 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:44:36,702 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:44:36,703 INFO  L85        PathProgramCache]: Analyzing trace with hash -1914625855, now seen corresponding path program 1 times
[2023-12-20 18:44:36,703 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:44:36,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427979900]
[2023-12-20 18:44:36,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:36,704 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:44:36,772 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:44:36,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289526171]
[2023-12-20 18:44:36,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:36,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:44:36,776 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:44:36,777 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 18:44:36,793 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-20 18:44:37,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:44:37,050 INFO  L262         TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-20 18:44:37,054 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:44:37,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-20 18:44:37,124 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 18:44:37,124 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:44:37,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427979900]
[2023-12-20 18:44:37,124 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 18:44:37,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289526171]
[2023-12-20 18:44:37,125 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [289526171] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 18:44:37,125 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 18:44:37,125 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-20 18:44:37,125 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658208542]
[2023-12-20 18:44:37,125 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 18:44:37,127 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 18:44:37,127 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:44:37,128 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 18:44:37,128 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 18:44:37,129 INFO  L87              Difference]: Start difference. First operand 59 states and 91 transitions. Second operand  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-20 18:44:37,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:44:37,184 INFO  L93              Difference]: Finished difference Result 159 states and 246 transitions.
[2023-12-20 18:44:37,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 18:44:37,185 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2023-12-20 18:44:37,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:44:37,189 INFO  L225             Difference]: With dead ends: 159
[2023-12-20 18:44:37,190 INFO  L226             Difference]: Without dead ends: 101
[2023-12-20 18:44:37,192 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 18:44:37,194 INFO  L413           NwaCegarLoop]: 141 mSDtfsCounter, 79 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 18:44:37,194 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 205 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 18:44:37,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-12-20 18:44:37,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58.
[2023-12-20 18:44:37,209 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-20 18:44:37,210 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 87 transitions.
[2023-12-20 18:44:37,211 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 87 transitions. Word has length 146
[2023-12-20 18:44:37,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:44:37,213 INFO  L495      AbstractCegarLoop]: Abstraction has 58 states and 87 transitions.
[2023-12-20 18:44:37,213 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-20 18:44:37,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 87 transitions.
[2023-12-20 18:44:37,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-20 18:44:37,218 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:44:37,218 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 18:44:37,224 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-20 18:44:37,424 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2023-12-20 18:44:37,425 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:44:37,425 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:44:37,425 INFO  L85        PathProgramCache]: Analyzing trace with hash -1912778813, now seen corresponding path program 1 times
[2023-12-20 18:44:37,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:44:37,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124698966]
[2023-12-20 18:44:37,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:37,426 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:44:37,460 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:44:37,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765052559]
[2023-12-20 18:44:37,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:37,461 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:44:37,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:44:37,463 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 18:44:37,465 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-20 18:44:37,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:44:37,886 INFO  L262         TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-20 18:44:37,889 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:44:38,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-20 18:44:38,434 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 18:44:38,435 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:44:38,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124698966]
[2023-12-20 18:44:38,435 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 18:44:38,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765052559]
[2023-12-20 18:44:38,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765052559] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 18:44:38,435 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 18:44:38,435 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-20 18:44:38,435 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765978639]
[2023-12-20 18:44:38,435 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 18:44:38,436 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-20 18:44:38,436 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:44:38,436 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-20 18:44:38,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-20 18:44:38,437 INFO  L87              Difference]: Start difference. First operand 58 states and 87 transitions. Second operand  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-20 18:44:39,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:44:39,688 INFO  L93              Difference]: Finished difference Result 276 states and 419 transitions.
[2023-12-20 18:44:39,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-20 18:44:39,689 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2023-12-20 18:44:39,690 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:44:39,691 INFO  L225             Difference]: With dead ends: 276
[2023-12-20 18:44:39,691 INFO  L226             Difference]: Without dead ends: 219
[2023-12-20 18:44:39,692 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2023-12-20 18:44:39,692 INFO  L413           NwaCegarLoop]: 148 mSDtfsCounter, 177 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-12-20 18:44:39,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 485 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-12-20 18:44:39,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2023-12-20 18:44:39,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 112.
[2023-12-20 18:44:39,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 states have internal predecessors, (74), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-20 18:44:39,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions.
[2023-12-20 18:44:39,713 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 146
[2023-12-20 18:44:39,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:44:39,714 INFO  L495      AbstractCegarLoop]: Abstraction has 112 states and 170 transitions.
[2023-12-20 18:44:39,714 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-20 18:44:39,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions.
[2023-12-20 18:44:39,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-20 18:44:39,715 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:44:39,715 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 18:44:39,730 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-20 18:44:39,921 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:44:39,921 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:44:39,922 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:44:39,922 INFO  L85        PathProgramCache]: Analyzing trace with hash -1912719231, now seen corresponding path program 1 times
[2023-12-20 18:44:39,922 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:44:39,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376577695]
[2023-12-20 18:44:39,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:39,922 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:44:39,965 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:44:39,966 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153970385]
[2023-12-20 18:44:39,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:44:39,966 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:44:39,966 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:44:39,976 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 18:44:40,013 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-20 18:44:40,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:44:40,702 INFO  L262         TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-12-20 18:44:40,707 INFO  L285         TraceCheckSpWp]: Computing forward predicates...