/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-45.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 18:41:58,162 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 18:41:58,231 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 18:41:58,234 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 18:41:58,234 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 18:41:58,265 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 18:41:58,265 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 18:41:58,266 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 18:41:58,266 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 18:41:58,269 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 18:41:58,269 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 18:41:58,270 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 18:41:58,270 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 18:41:58,271 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 18:41:58,271 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 18:41:58,271 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 18:41:58,271 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 18:41:58,272 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 18:41:58,273 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 18:41:58,273 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 18:41:58,273 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 18:41:58,273 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 18:41:58,273 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 18:41:58,273 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 18:41:58,274 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 18:41:58,274 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 18:41:58,274 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 18:41:58,274 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 18:41:58,275 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 18:41:58,275 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 18:41:58,276 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 18:41:58,276 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 18:41:58,276 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 18:41:58,450 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 18:41:58,466 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 18:41:58,468 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 18:41:58,469 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 18:41:58,469 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 18:41:58,470 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i
[2023-12-20 18:41:59,501 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 18:41:59,694 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 18:41:59,695 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i
[2023-12-20 18:41:59,703 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b7264c54/f2a2023bf25d4bd986393f479026ed98/FLAG16a346078
[2023-12-20 18:41:59,721 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b7264c54/f2a2023bf25d4bd986393f479026ed98
[2023-12-20 18:41:59,723 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 18:41:59,724 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 18:41:59,726 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 18:41:59,726 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 18:41:59,730 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 18:41:59,730 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:41:59" (1/1) ...
[2023-12-20 18:41:59,731 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad4f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:41:59, skipping insertion in model container
[2023-12-20 18:41:59,731 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:41:59" (1/1) ...
[2023-12-20 18:41:59,763 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 18:41:59,887 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-45.i[919,932]
[2023-12-20 18:41:59,937 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 18:41:59,958 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 18:41:59,966 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-45.i[919,932]
[2023-12-20 18:41:59,993 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 18:42:00,015 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 18:42:00,015 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00 WrapperNode
[2023-12-20 18:42:00,016 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 18:42:00,016 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 18:42:00,016 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 18:42:00,016 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 18:42:00,022 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,028 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,059 INFO  L138                Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117
[2023-12-20 18:42:00,059 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 18:42:00,060 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 18:42:00,060 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 18:42:00,060 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 18:42:00,068 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,068 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,071 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,083 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 18:42:00,083 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,083 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,099 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,103 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,105 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,106 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,107 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 18:42:00,108 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 18:42:00,108 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 18:42:00,108 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 18:42:00,109 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (1/1) ...
[2023-12-20 18:42:00,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 18:42:00,123 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:42:00,134 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 18:42:00,206 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 18:42:00,207 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 18:42:00,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 18:42:00,207 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 18:42:00,207 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 18:42:00,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 18:42:00,205 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 18:42:00,284 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 18:42:00,286 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 18:42:00,537 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 18:42:00,588 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 18:42:00,588 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 18:42:00,589 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:42:00 BoogieIcfgContainer
[2023-12-20 18:42:00,589 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 18:42:00,590 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 18:42:00,590 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 18:42:00,600 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 18:42:00,600 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:41:59" (1/3) ...
[2023-12-20 18:42:00,600 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f1ff36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:42:00, skipping insertion in model container
[2023-12-20 18:42:00,600 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:42:00" (2/3) ...
[2023-12-20 18:42:00,601 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f1ff36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:42:00, skipping insertion in model container
[2023-12-20 18:42:00,601 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:42:00" (3/3) ...
[2023-12-20 18:42:00,603 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-45.i
[2023-12-20 18:42:00,614 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 18:42:00,614 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 18:42:00,653 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 18:42:00,657 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;@7f26e9d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 18:42:00,658 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 18:42:00,660 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 49 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-12-20 18:42:00,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-12-20 18:42:00,668 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:42:00,669 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:00,670 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:42:00,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:42:00,674 INFO  L85        PathProgramCache]: Analyzing trace with hash 749594026, now seen corresponding path program 1 times
[2023-12-20 18:42:00,679 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:42:00,679 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14494653]
[2023-12-20 18:42:00,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:00,680 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:42:00,835 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:42:00,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477039228]
[2023-12-20 18:42:00,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:00,835 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:42:00,836 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:42:00,839 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 18:42:00,845 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 18:42:00,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:42:00,959 INFO  L262         TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-20 18:42:00,972 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:42:01,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-20 18:42:01,056 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 18:42:01,056 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:42:01,056 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14494653]
[2023-12-20 18:42:01,056 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 18:42:01,056 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477039228]
[2023-12-20 18:42:01,057 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477039228] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 18:42:01,057 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 18:42:01,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-20 18:42:01,059 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738913570]
[2023-12-20 18:42:01,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 18:42:01,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 18:42:01,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:42:01,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 18:42:01,084 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 18:42:01,085 INFO  L87              Difference]: Start difference. First operand  has 49 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-20 18:42:01,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:42:01,158 INFO  L93              Difference]: Finished difference Result 138 states and 253 transitions.
[2023-12-20 18:42:01,159 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 18:42:01,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101
[2023-12-20 18:42:01,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:42:01,167 INFO  L225             Difference]: With dead ends: 138
[2023-12-20 18:42:01,167 INFO  L226             Difference]: Without dead ends: 90
[2023-12-20 18:42:01,169 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 18:42:01,172 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 18:42:01,173 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 131 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 18:42:01,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-12-20 18:42:01,207 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88.
[2023-12-20 18:42:01,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2023-12-20 18:42:01,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions.
[2023-12-20 18:42:01,213 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 101
[2023-12-20 18:42:01,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:42:01,213 INFO  L495      AbstractCegarLoop]: Abstraction has 88 states and 131 transitions.
[2023-12-20 18:42:01,213 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-20 18:42:01,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions.
[2023-12-20 18:42:01,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-20 18:42:01,216 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:42:01,216 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:01,224 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 18:42:01,417 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 18:42:01,418 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:42:01,418 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:42:01,419 INFO  L85        PathProgramCache]: Analyzing trace with hash -1263296592, now seen corresponding path program 1 times
[2023-12-20 18:42:01,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:42:01,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274747611]
[2023-12-20 18:42:01,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:01,419 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:42:01,499 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:42:01,500 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406255490]
[2023-12-20 18:42:01,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:01,500 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:42:01,500 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:42:01,513 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 18:42:01,520 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 18:42:01,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:42:01,606 INFO  L262         TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-20 18:42:01,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:42:01,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-12-20 18:42:01,663 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 18:42:01,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2023-12-20 18:42:01,846 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:42:01,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274747611]
[2023-12-20 18:42:01,846 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 18:42:01,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406255490]
[2023-12-20 18:42:01,846 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [406255490] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 18:42:01,847 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 18:42:01,847 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2023-12-20 18:42:01,847 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82021165]
[2023-12-20 18:42:01,847 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 18:42:01,849 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-20 18:42:01,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:42:01,850 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-20 18:42:01,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-12-20 18:42:01,851 INFO  L87              Difference]: Start difference. First operand 88 states and 131 transitions. Second operand  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2023-12-20 18:42:02,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:42:02,049 INFO  L93              Difference]: Finished difference Result 144 states and 208 transitions.
[2023-12-20 18:42:02,049 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-20 18:42:02,050 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 102
[2023-12-20 18:42:02,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:42:02,052 INFO  L225             Difference]: With dead ends: 144
[2023-12-20 18:42:02,052 INFO  L226             Difference]: Without dead ends: 57
[2023-12-20 18:42:02,055 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210
[2023-12-20 18:42:02,057 INFO  L413           NwaCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 18:42:02,060 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 89 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 18:42:02,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2023-12-20 18:42:02,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50.
[2023-12-20 18:42:02,073 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-12-20 18:42:02,074 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions.
[2023-12-20 18:42:02,074 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 102
[2023-12-20 18:42:02,074 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:42:02,074 INFO  L495      AbstractCegarLoop]: Abstraction has 50 states and 69 transitions.
[2023-12-20 18:42:02,075 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2023-12-20 18:42:02,075 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions.
[2023-12-20 18:42:02,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-20 18:42:02,080 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:42:02,080 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:02,088 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 18:42:02,288 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 18:42:02,288 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:42:02,289 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:42:02,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 1747621370, now seen corresponding path program 1 times
[2023-12-20 18:42:02,290 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:42:02,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755165446]
[2023-12-20 18:42:02,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:02,291 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:42:02,329 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:42:02,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872458173]
[2023-12-20 18:42:02,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:02,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:42:02,329 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:42:02,334 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 18:42:02,354 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 18:42:02,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:42:02,401 INFO  L262         TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-20 18:42:02,403 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 18:42:03,774 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-20 18:42:03,775 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 18:42:03,775 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 18:42:03,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755165446]
[2023-12-20 18:42:03,775 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 18:42:03,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872458173]
[2023-12-20 18:42:03,775 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [872458173] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 18:42:03,775 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 18:42:03,775 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-20 18:42:03,776 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286048977]
[2023-12-20 18:42:03,776 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 18:42:03,776 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-20 18:42:03,776 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 18:42:03,777 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-20 18:42:03,777 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-20 18:42:03,777 INFO  L87              Difference]: Start difference. First operand 50 states and 69 transitions. Second operand  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-20 18:42:03,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 18:42:03,977 INFO  L93              Difference]: Finished difference Result 131 states and 180 transitions.
[2023-12-20 18:42:03,977 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-20 18:42:03,978 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 102
[2023-12-20 18:42:03,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 18:42:03,981 INFO  L225             Difference]: With dead ends: 131
[2023-12-20 18:42:03,981 INFO  L226             Difference]: Without dead ends: 82
[2023-12-20 18:42:03,982 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-20 18:42:03,984 INFO  L413           NwaCegarLoop]: 78 mSDtfsCounter, 94 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 18:42:03,988 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 98 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 18:42:03,989 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2023-12-20 18:42:04,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79.
[2023-12-20 18:42:04,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 states have internal predecessors, (60), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-20 18:42:04,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 108 transitions.
[2023-12-20 18:42:04,008 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 108 transitions. Word has length 102
[2023-12-20 18:42:04,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 18:42:04,009 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 108 transitions.
[2023-12-20 18:42:04,009 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-20 18:42:04,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 108 transitions.
[2023-12-20 18:42:04,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-12-20 18:42:04,014 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 18:42:04,014 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:04,026 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-20 18:42:04,220 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 18:42:04,220 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 18:42:04,221 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 18:42:04,221 INFO  L85        PathProgramCache]: Analyzing trace with hash -1667817581, now seen corresponding path program 1 times
[2023-12-20 18:42:04,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 18:42:04,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257406580]
[2023-12-20 18:42:04,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:04,222 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 18:42:04,265 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 18:42:04,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384027829]
[2023-12-20 18:42:04,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 18:42:04,266 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 18:42:04,266 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 18:42:04,272 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 18:42:04,301 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 18:42:04,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 18:42:04,351 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjunts are in the unsatisfiable core
[2023-12-20 18:42:04,355 INFO  L285         TraceCheckSpWp]: Computing forward predicates...