/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_codestructure_dependencies_file-13.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-22 19:38:36,612 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-22 19:38:36,655 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-22 19:38:36,659 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-22 19:38:36,659 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-22 19:38:36,688 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-22 19:38:36,688 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-22 19:38:36,688 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-22 19:38:36,689 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-22 19:38:36,689 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-22 19:38:36,689 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-22 19:38:36,689 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-22 19:38:36,690 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-22 19:38:36,690 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-22 19:38:36,690 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-22 19:38:36,691 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-22 19:38:36,691 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-22 19:38:36,691 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-22 19:38:36,691 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-22 19:38:36,691 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-22 19:38:36,692 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-22 19:38:36,695 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-22 19:38:36,695 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-22 19:38:36,695 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-22 19:38:36,698 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-22 19:38:36,698 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-22 19:38:36,698 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-22 19:38:36,699 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-22 19:38:36,699 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-22 19:38:36,699 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-22 19:38:36,700 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-22 19:38:36,700 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-22 19:38:36,700 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-22 19:38:36,700 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-22 19:38:36,700 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 19:38:36,700 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-22 19:38:36,700 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-22 19:38:36,701 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-22 19:38:36,702 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-22 19:38:36,702 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-22 19:38:36,702 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-22 19:38:36,892 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-22 19:38:36,906 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-22 19:38:36,907 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-22 19:38:36,908 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-22 19:38:36,908 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-22 19:38:36,909 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-13.i
[2023-12-22 19:38:37,973 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-22 19:38:38,163 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-22 19:38:38,164 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-13.i
[2023-12-22 19:38:38,174 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f55b4b8c/7fe70483ce13411a9757fbb074eedf4b/FLAG063b4e342
[2023-12-22 19:38:38,193 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f55b4b8c/7fe70483ce13411a9757fbb074eedf4b
[2023-12-22 19:38:38,195 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-22 19:38:38,197 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-22 19:38:38,200 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-22 19:38:38,200 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-22 19:38:38,204 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-22 19:38:38,204 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,205 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46779708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38, skipping insertion in model container
[2023-12-22 19:38:38,205 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,238 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-22 19:38:38,363 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-13.i[919,932]
[2023-12-22 19:38:38,396 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 19:38:38,408 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-22 19:38:38,417 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-13.i[919,932]
[2023-12-22 19:38:38,435 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 19:38:38,446 INFO  L206         MainTranslator]: Completed translation
[2023-12-22 19:38:38,447 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38 WrapperNode
[2023-12-22 19:38:38,447 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-22 19:38:38,448 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-22 19:38:38,448 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-22 19:38:38,448 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-22 19:38:38,452 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,461 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,479 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 136
[2023-12-22 19:38:38,479 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-22 19:38:38,480 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-22 19:38:38,480 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-22 19:38:38,480 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-22 19:38:38,488 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,488 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,492 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,502 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].
[2023-12-22 19:38:38,502 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,503 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,518 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,521 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,523 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,524 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,527 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-22 19:38:38,527 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-22 19:38:38,527 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-22 19:38:38,527 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-22 19:38:38,534 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (1/1) ...
[2023-12-22 19:38:38,551 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 19:38:38,561 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-22 19:38:38,575 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)
[2023-12-22 19:38:38,595 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
[2023-12-22 19:38:38,602 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-22 19:38:38,602 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-22 19:38:38,602 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-22 19:38:38,603 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-22 19:38:38,603 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-22 19:38:38,604 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-22 19:38:38,684 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-22 19:38:38,687 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-22 19:38:42,556 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-22 19:38:42,620 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-22 19:38:42,621 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-22 19:38:42,621 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:42 BoogieIcfgContainer
[2023-12-22 19:38:42,621 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-22 19:38:42,623 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-22 19:38:42,623 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-22 19:38:42,625 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-22 19:38:42,625 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:38:38" (1/3) ...
[2023-12-22 19:38:42,626 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd84d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:42, skipping insertion in model container
[2023-12-22 19:38:42,626 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:38" (2/3) ...
[2023-12-22 19:38:42,626 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd84d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:42, skipping insertion in model container
[2023-12-22 19:38:42,626 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:42" (3/3) ...
[2023-12-22 19:38:42,627 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-13.i
[2023-12-22 19:38:42,640 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-22 19:38:42,640 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-22 19:38:42,682 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-22 19:38:42,688 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;@21904de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-22 19:38:42,688 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-22 19:38:42,691 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 56 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-22 19:38:42,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2023-12-22 19:38:42,704 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:38:42,705 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:38:42,705 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:38:42,709 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:38:42,709 INFO  L85        PathProgramCache]: Analyzing trace with hash 687622240, now seen corresponding path program 1 times
[2023-12-22 19:38:42,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:38:42,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539596309]
[2023-12-22 19:38:42,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:38:42,718 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
[2023-12-22 19:38:42,719 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:38:42,723 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)
[2023-12-22 19:38:42,724 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
[2023-12-22 19:38:43,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:38:43,040 INFO  L262         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-22 19:38:43,046 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:38:43,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-12-22 19:38:43,100 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 19:38:43,100 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:38:43,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539596309]
[2023-12-22 19:38:43,101 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539596309] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 19:38:43,101 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 19:38:43,101 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-22 19:38:43,102 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519715854]
[2023-12-22 19:38:43,103 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 19:38:43,105 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-22 19:38:43,106 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:38:43,123 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-22 19:38:43,124 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 19:38:43,126 INFO  L87              Difference]: Start difference. First operand  has 56 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-22 19:38:46,716 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:38:46,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:38:46,717 INFO  L93              Difference]: Finished difference Result 109 states and 194 transitions.
[2023-12-22 19:38:46,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-22 19:38:46,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 125
[2023-12-22 19:38:46,748 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:38:46,752 INFO  L225             Difference]: With dead ends: 109
[2023-12-22 19:38:46,753 INFO  L226             Difference]: Without dead ends: 54
[2023-12-22 19:38:46,755 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 19:38:46,757 INFO  L413           NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-12-22 19:38:46,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-12-22 19:38:46,768 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2023-12-22 19:38:46,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2023-12-22 19:38:46,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-22 19:38:46,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 82 transitions.
[2023-12-22 19:38:46,785 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 82 transitions. Word has length 125
[2023-12-22 19:38:46,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:38:46,785 INFO  L495      AbstractCegarLoop]: Abstraction has 54 states and 82 transitions.
[2023-12-22 19:38:46,785 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-22 19:38:46,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 82 transitions.
[2023-12-22 19:38:46,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2023-12-22 19:38:46,787 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:38:46,787 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:38:46,802 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 (2)] Forceful destruction successful, exit code 0
[2023-12-22 19:38:46,997 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
[2023-12-22 19:38:46,997 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:38:46,997 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:38:46,998 INFO  L85        PathProgramCache]: Analyzing trace with hash -2089451160, now seen corresponding path program 1 times
[2023-12-22 19:38:46,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:38:46,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830111102]
[2023-12-22 19:38:46,998 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:38:46,998 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
[2023-12-22 19:38:46,999 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:38:47,004 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)
[2023-12-22 19:38:47,026 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
[2023-12-22 19:38:47,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:38:47,248 INFO  L262         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-22 19:38:47,252 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:38:48,014 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-22 19:38:48,014 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 19:38:48,014 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:38:48,014 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830111102]
[2023-12-22 19:38:48,014 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830111102] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 19:38:48,015 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 19:38:48,015 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-22 19:38:48,015 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873906034]
[2023-12-22 19:38:48,015 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 19:38:48,016 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-22 19:38:48,016 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:38:48,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-22 19:38:48,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-22 19:38:48,017 INFO  L87              Difference]: Start difference. First operand 54 states and 82 transitions. Second operand  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-22 19:38:50,868 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:38:52,697 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:38:52,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:38:52,698 INFO  L93              Difference]: Finished difference Result 161 states and 245 transitions.
[2023-12-22 19:38:52,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-22 19:38:52,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125
[2023-12-22 19:38:52,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:38:52,731 INFO  L225             Difference]: With dead ends: 161
[2023-12-22 19:38:52,731 INFO  L226             Difference]: Without dead ends: 108
[2023-12-22 19:38:52,732 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-22 19:38:52,732 INFO  L413           NwaCegarLoop]: 77 mSDtfsCounter, 47 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-12-22 19:38:52,733 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 227 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-12-22 19:38:52,733 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2023-12-22 19:38:52,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92.
[2023-12-22 19:38:52,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-22 19:38:52,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 139 transitions.
[2023-12-22 19:38:52,763 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 139 transitions. Word has length 125
[2023-12-22 19:38:52,764 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:38:52,764 INFO  L495      AbstractCegarLoop]: Abstraction has 92 states and 139 transitions.
[2023-12-22 19:38:52,767 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-22 19:38:52,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 139 transitions.
[2023-12-22 19:38:52,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2023-12-22 19:38:52,772 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:38:52,773 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:38:52,790 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
[2023-12-22 19:38:52,981 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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
[2023-12-22 19:38:52,982 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:38:52,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:38:52,985 INFO  L85        PathProgramCache]: Analyzing trace with hash -1642386676, now seen corresponding path program 1 times
[2023-12-22 19:38:52,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:38:52,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082039492]
[2023-12-22 19:38:52,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:38:52,986 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
[2023-12-22 19:38:52,986 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:38:52,989 INFO  L229       MonitoredProcess]: Starting monitored process 4 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)
[2023-12-22 19:38:52,994 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 (4)] Waiting until timeout for monitored process
[2023-12-22 19:38:53,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:38:53,246 INFO  L262         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-22 19:38:53,249 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:38:54,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 40 proven. 108 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked.
[2023-12-22 19:38:54,003 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-22 19:38:54,149 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-22 19:38:54,149 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:38:54,149 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082039492]
[2023-12-22 19:38:54,149 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082039492] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-22 19:38:54,149 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-22 19:38:54,149 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10
[2023-12-22 19:38:54,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433855016]
[2023-12-22 19:38:54,150 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 19:38:54,150 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-22 19:38:54,150 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:38:54,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-22 19:38:54,150 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-12-22 19:38:54,151 INFO  L87              Difference]: Start difference. First operand 92 states and 139 transitions. Second operand  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-22 19:38:56,831 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:38:58,167 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:38:58,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:38:58,229 INFO  L93              Difference]: Finished difference Result 160 states and 242 transitions.
[2023-12-22 19:38:58,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-22 19:38:58,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 126
[2023-12-22 19:38:58,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:38:58,231 INFO  L225             Difference]: With dead ends: 160
[2023-12-22 19:38:58,231 INFO  L226             Difference]: Without dead ends: 107
[2023-12-22 19:38:58,232 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-12-22 19:38:58,232 INFO  L413           NwaCegarLoop]: 73 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-12-22 19:38:58,233 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 139 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-12-22 19:38:58,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2023-12-22 19:38:58,250 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94.
[2023-12-22 19:38:58,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-22 19:38:58,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 142 transitions.
[2023-12-22 19:38:58,251 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 142 transitions. Word has length 126
[2023-12-22 19:38:58,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:38:58,252 INFO  L495      AbstractCegarLoop]: Abstraction has 94 states and 142 transitions.
[2023-12-22 19:38:58,252 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-22 19:38:58,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 142 transitions.
[2023-12-22 19:38:58,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2023-12-22 19:38:58,255 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:38:58,256 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:38:58,267 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 (4)] Forceful destruction successful, exit code 0
[2023-12-22 19:38:58,467 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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
[2023-12-22 19:38:58,468 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:38:58,471 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:38:58,472 INFO  L85        PathProgramCache]: Analyzing trace with hash -962328306, now seen corresponding path program 1 times
[2023-12-22 19:38:58,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:38:58,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704467045]
[2023-12-22 19:38:58,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:38:58,472 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
[2023-12-22 19:38:58,472 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:38:58,473 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)
[2023-12-22 19:38:58,474 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
[2023-12-22 19:38:58,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:38:58,746 INFO  L262         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-12-22 19:38:58,751 INFO  L285         TraceCheckSpWp]: Computing forward predicates...