/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-24 01:32:15,177 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-24 01:32:15,232 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-24 01:32:15,237 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-24 01:32:15,237 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-24 01:32:15,263 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-24 01:32:15,263 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-24 01:32:15,264 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-24 01:32:15,264 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-24 01:32:15,264 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-24 01:32:15,265 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-24 01:32:15,265 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-24 01:32:15,265 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-24 01:32:15,265 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-24 01:32:15,266 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-24 01:32:15,266 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-24 01:32:15,266 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-24 01:32:15,266 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-24 01:32:15,267 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-24 01:32:15,267 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-24 01:32:15,267 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-24 01:32:15,270 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-24 01:32:15,271 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-24 01:32:15,271 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-24 01:32:15,274 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-24 01:32:15,275 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-24 01:32:15,275 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 01:32:15,276 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-24 01:32:15,276 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-24 01:32:15,277 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-24 01:32:15,278 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-24 01:32:15,476 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-24 01:32:15,493 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-24 01:32:15,495 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-24 01:32:15,496 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-24 01:32:15,496 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-24 01:32:15,497 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i
[2023-12-24 01:32:16,490 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-24 01:32:16,678 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-24 01:32:16,678 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i
[2023-12-24 01:32:16,689 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d1b43e3/86a6e76758ab4792b1f61eac4bbbc1fa/FLAGac9342ed1
[2023-12-24 01:32:16,703 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d1b43e3/86a6e76758ab4792b1f61eac4bbbc1fa
[2023-12-24 01:32:16,708 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-24 01:32:16,709 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-24 01:32:16,711 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-24 01:32:16,712 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-24 01:32:16,716 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-24 01:32:16,717 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:16,717 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60040419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16, skipping insertion in model container
[2023-12-24 01:32:16,718 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:16,742 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-24 01:32:16,864 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928]
[2023-12-24 01:32:16,913 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 01:32:16,928 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-24 01:32:16,941 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928]
[2023-12-24 01:32:16,957 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 01:32:16,968 INFO  L206         MainTranslator]: Completed translation
[2023-12-24 01:32:16,969 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16 WrapperNode
[2023-12-24 01:32:16,969 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-24 01:32:16,970 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-24 01:32:16,970 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-24 01:32:16,970 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-24 01:32:16,978 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:16,995 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,009 INFO  L138                Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94
[2023-12-24 01:32:17,010 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-24 01:32:17,010 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-24 01:32:17,010 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-24 01:32:17,010 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-24 01:32:17,018 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,018 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,023 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,033 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].
[2023-12-24 01:32:17,034 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,034 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,046 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,048 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,049 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,050 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,052 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-24 01:32:17,052 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-24 01:32:17,053 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-24 01:32:17,053 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-24 01:32:17,053 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (1/1) ...
[2023-12-24 01:32:17,059 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 01:32:17,069 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-24 01:32:17,080 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)
[2023-12-24 01:32:17,096 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
[2023-12-24 01:32:17,111 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-24 01:32:17,111 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-24 01:32:17,111 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-24 01:32:17,113 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-24 01:32:17,113 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-24 01:32:17,113 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-24 01:32:17,200 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-24 01:32:17,204 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-24 01:32:17,428 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-24 01:32:17,470 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-24 01:32:17,470 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-24 01:32:17,470 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:32:17 BoogieIcfgContainer
[2023-12-24 01:32:17,470 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-24 01:32:17,472 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-24 01:32:17,472 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-24 01:32:17,474 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-24 01:32:17,475 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:32:16" (1/3) ...
[2023-12-24 01:32:17,475 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df09ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:32:17, skipping insertion in model container
[2023-12-24 01:32:17,475 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:32:16" (2/3) ...
[2023-12-24 01:32:17,475 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df09ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:32:17, skipping insertion in model container
[2023-12-24 01:32:17,475 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:32:17" (3/3) ...
[2023-12-24 01:32:17,476 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-31.i
[2023-12-24 01:32:17,488 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-24 01:32:17,489 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-24 01:32:17,525 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-24 01:32:17,531 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;@747e48eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-24 01:32:17,532 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-24 01:32:17,535 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2023-12-24 01:32:17,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2023-12-24 01:32:17,543 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 01:32:17,544 INFO  L195           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 01:32:17,544 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 01:32:17,549 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 01:32:17,549 INFO  L85        PathProgramCache]: Analyzing trace with hash 1467516349, now seen corresponding path program 1 times
[2023-12-24 01:32:17,559 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 01:32:17,560 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685959540]
[2023-12-24 01:32:17,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:32:17,560 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:32:17,560 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 01:32:17,563 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-24 01:32:17,563 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-24 01:32:17,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:32:17,743 INFO  L262         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-24 01:32:17,748 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 01:32:17,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2023-12-24 01:32:17,777 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 01:32:17,777 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 01:32:17,777 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685959540]
[2023-12-24 01:32:17,778 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685959540] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 01:32:17,778 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-24 01:32:17,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-24 01:32:17,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632916967]
[2023-12-24 01:32:17,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 01:32:17,782 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-24 01:32:17,782 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 01:32:17,807 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-24 01:32:17,808 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-24 01:32:17,809 INFO  L87              Difference]: Start difference. First operand  has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2023-12-24 01:32:17,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 01:32:17,857 INFO  L93              Difference]: Finished difference Result 69 states and 117 transitions.
[2023-12-24 01:32:17,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-24 01:32:17,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70
[2023-12-24 01:32:17,864 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 01:32:17,868 INFO  L225             Difference]: With dead ends: 69
[2023-12-24 01:32:17,868 INFO  L226             Difference]: Without dead ends: 34
[2023-12-24 01:32:17,870 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-24 01:32:17,873 INFO  L413           NwaCegarLoop]: 46 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, 46 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
[2023-12-24 01:32:17,873 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-24 01:32:17,884 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2023-12-24 01:32:17,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2023-12-24 01:32:17,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2023-12-24 01:32:17,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2023-12-24 01:32:17,898 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 70
[2023-12-24 01:32:17,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 01:32:17,899 INFO  L495      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2023-12-24 01:32:17,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2023-12-24 01:32:17,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2023-12-24 01:32:17,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2023-12-24 01:32:17,901 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 01:32:17,901 INFO  L195           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 01:32:17,906 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-24 01:32:18,106 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:32:18,107 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 01:32:18,107 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 01:32:18,108 INFO  L85        PathProgramCache]: Analyzing trace with hash -1542214529, now seen corresponding path program 1 times
[2023-12-24 01:32:18,108 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 01:32:18,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937608367]
[2023-12-24 01:32:18,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:32:18,108 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:32:18,108 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 01:32:18,109 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-24 01:32:18,110 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-24 01:32:18,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:32:18,213 INFO  L262         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 01:32:18,227 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 01:32:19,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2023-12-24 01:32:19,361 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 01:32:24,999 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 01:32:24,999 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937608367]
[2023-12-24 01:32:24,999 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [937608367] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 01:32:24,999 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1643408150]
[2023-12-24 01:32:25,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:32:25,000 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 01:32:25,000 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 01:32:25,041 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-24 01:32:25,042 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2023-12-24 01:32:25,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:32:25,267 INFO  L262         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-24 01:32:25,270 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 01:32:26,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2023-12-24 01:32:26,547 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 01:32:28,348 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1643408150] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 01:32:28,349 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-24 01:32:28,349 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14
[2023-12-24 01:32:28,349 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328147527]
[2023-12-24 01:32:28,350 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-24 01:32:28,350 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-12-24 01:32:28,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 01:32:28,351 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-12-24 01:32:28,351 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420
[2023-12-24 01:32:28,352 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand  has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22)
[2023-12-24 01:32:31,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 01:32:31,473 INFO  L93              Difference]: Finished difference Result 123 states and 169 transitions.
[2023-12-24 01:32:31,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-12-24 01:32:31,483 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 70
[2023-12-24 01:32:31,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 01:32:31,485 INFO  L225             Difference]: With dead ends: 123
[2023-12-24 01:32:31,485 INFO  L226             Difference]: Without dead ends: 90
[2023-12-24 01:32:31,486 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=410, Invalid=996, Unknown=0, NotChecked=0, Total=1406
[2023-12-24 01:32:31,487 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-24 01:32:31,487 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 215 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-24 01:32:31,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-12-24 01:32:31,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68.
[2023-12-24 01:32:31,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-12-24 01:32:31,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions.
[2023-12-24 01:32:31,513 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 70
[2023-12-24 01:32:31,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 01:32:31,514 INFO  L495      AbstractCegarLoop]: Abstraction has 68 states and 93 transitions.
[2023-12-24 01:32:31,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22)
[2023-12-24 01:32:31,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions.
[2023-12-24 01:32:31,515 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2023-12-24 01:32:31,515 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 01:32:31,516 INFO  L195           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 01:32:31,522 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2023-12-24 01:32:31,728 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-24 01:32:31,920 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:32:31,921 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 01:32:31,921 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 01:32:31,921 INFO  L85        PathProgramCache]: Analyzing trace with hash -1540367487, now seen corresponding path program 1 times
[2023-12-24 01:32:31,921 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 01:32:31,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815247259]
[2023-12-24 01:32:31,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:32:31,922 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:32:31,922 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 01:32:31,923 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-24 01:32:31,925 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-24 01:32:32,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:32:32,041 INFO  L262         TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core
[2023-12-24 01:32:32,045 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 01:33:30,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2023-12-24 01:33:30,514 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 01:35:08,255 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 01:35:08,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815247259]
[2023-12-24 01:35:08,256 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815247259] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 01:35:08,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [820118156]
[2023-12-24 01:35:08,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:35:08,256 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 01:35:08,256 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 01:35:08,258 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-24 01:35:08,259 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2023-12-24 01:35:08,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:35:08,513 INFO  L262         TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 26 conjunts are in the unsatisfiable core
[2023-12-24 01:35:08,517 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 01:36:01,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2023-12-24 01:36:01,862 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 01:37:56,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2023-12-24 01:37:56,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [820118156] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-24 01:37:56,228 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-24 01:37:56,228 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 14] total 31
[2023-12-24 01:37:56,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112304369]
[2023-12-24 01:37:56,228 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 01:37:56,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-24 01:37:56,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 01:37:56,230 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-24 01:37:56,230 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122
[2023-12-24 01:37:56,230 INFO  L87              Difference]: Start difference. First operand 68 states and 93 transitions. Second operand  has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2023-12-24 01:38:07,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 01:38:07,873 INFO  L93              Difference]: Finished difference Result 110 states and 143 transitions.
[2023-12-24 01:38:07,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-12-24 01:38:07,882 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70
[2023-12-24 01:38:07,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 01:38:07,884 INFO  L225             Difference]: With dead ends: 110
[2023-12-24 01:38:07,884 INFO  L226             Difference]: Without dead ends: 108
[2023-12-24 01:38:07,885 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892
[2023-12-24 01:38:07,885 INFO  L413           NwaCegarLoop]: 31 mSDtfsCounter, 119 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-12-24 01:38:07,886 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 134 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-12-24 01:38:07,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2023-12-24 01:38:07,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86.
[2023-12-24 01:38:07,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-24 01:38:07,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions.
[2023-12-24 01:38:07,898 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 70
[2023-12-24 01:38:07,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 01:38:07,898 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 116 transitions.
[2023-12-24 01:38:07,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2023-12-24 01:38:07,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions.
[2023-12-24 01:38:07,900 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2023-12-24 01:38:07,900 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 01:38:07,900 INFO  L195           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 01:38:07,906 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0
[2023-12-24 01:38:08,109 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0
[2023-12-24 01:38:08,305 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-24 01:38:08,306 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 01:38:08,306 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 01:38:08,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -506702820, now seen corresponding path program 1 times
[2023-12-24 01:38:08,307 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 01:38:08,307 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31291521]
[2023-12-24 01:38:08,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 01:38:08,307 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 01:38:08,307 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 01:38:08,308 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-24 01:38:08,309 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-12-24 01:38:08,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 01:38:08,418 INFO  L262         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 24 conjunts are in the unsatisfiable core
[2023-12-24 01:38:08,421 INFO  L285         TraceCheckSpWp]: Computing forward predicates...