/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_operatoramount_amount250_file-7.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-24 07:21:26,134 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-24 07:21:26,187 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 07:21:26,190 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-24 07:21:26,191 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-24 07:21:26,210 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-24 07:21:26,211 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-24 07:21:26,211 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-24 07:21:26,212 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-24 07:21:26,215 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-24 07:21:26,216 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-24 07:21:26,216 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-24 07:21:26,216 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-24 07:21:26,217 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-24 07:21:26,218 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-24 07:21:26,218 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-24 07:21:26,218 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-24 07:21:26,219 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-24 07:21:26,219 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-24 07:21:26,219 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-24 07:21:26,219 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-24 07:21:26,220 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-24 07:21:26,220 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-24 07:21:26,220 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-24 07:21:26,220 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-24 07:21:26,221 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-24 07:21:26,221 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-24 07:21:26,222 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-24 07:21:26,222 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-24 07:21:26,222 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-24 07:21:26,223 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-24 07:21:26,223 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-24 07:21:26,223 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-24 07:21:26,223 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-24 07:21:26,224 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 07:21:26,224 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-24 07:21:26,224 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-24 07:21:26,224 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-24 07:21:26,224 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-24 07:21:26,225 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-24 07:21:26,225 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-24 07:21:26,225 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-24 07:21:26,226 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-24 07:21:26,226 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-24 07:21:26,226 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-24 07:21:26,226 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-24 07:21:26,226 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-24 07:21:26,447 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-24 07:21:26,472 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-24 07:21:26,474 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-24 07:21:26,475 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-24 07:21:26,475 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-24 07:21:26,477 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-7.i
[2023-12-24 07:21:27,617 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-24 07:21:27,831 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-24 07:21:27,831 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-7.i
[2023-12-24 07:21:27,841 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6113fc93b/194aae8d39ae4b51874650175ef56c93/FLAG87d113832
[2023-12-24 07:21:27,851 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6113fc93b/194aae8d39ae4b51874650175ef56c93
[2023-12-24 07:21:27,853 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-24 07:21:27,854 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-24 07:21:27,855 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-24 07:21:27,855 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-24 07:21:27,868 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-24 07:21:27,868 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:21:27" (1/1) ...
[2023-12-24 07:21:27,869 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9404bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:27, skipping insertion in model container
[2023-12-24 07:21:27,869 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:21:27" (1/1) ...
[2023-12-24 07:21:27,933 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-24 07:21:28,076 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_operatoramount_amount250_file-7.i[915,928]
[2023-12-24 07:21:28,263 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 07:21:28,284 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-24 07:21:28,295 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_operatoramount_amount250_file-7.i[915,928]
[2023-12-24 07:21:28,382 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 07:21:28,400 INFO  L206         MainTranslator]: Completed translation
[2023-12-24 07:21:28,402 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28 WrapperNode
[2023-12-24 07:21:28,402 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-24 07:21:28,404 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-24 07:21:28,404 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-24 07:21:28,404 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-24 07:21:28,411 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,431 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,480 INFO  L138                Inliner]: procedures = 27, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 364
[2023-12-24 07:21:28,480 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-24 07:21:28,481 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-24 07:21:28,481 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-24 07:21:28,481 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-24 07:21:28,492 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,492 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,509 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,543 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 07:21:28,543 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,544 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,560 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,564 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,578 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,581 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,585 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-24 07:21:28,586 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-24 07:21:28,586 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-24 07:21:28,586 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-24 07:21:28,587 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (1/1) ...
[2023-12-24 07:21:28,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 07:21:28,608 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-24 07:21:28,621 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 07:21:28,645 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 07:21:28,652 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-24 07:21:28,652 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-24 07:21:28,652 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-24 07:21:28,653 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-24 07:21:28,654 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-24 07:21:28,654 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-24 07:21:28,778 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-24 07:21:28,780 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-24 07:21:48,635 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-24 07:21:48,734 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-24 07:21:48,734 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-24 07:21:48,735 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:21:48 BoogieIcfgContainer
[2023-12-24 07:21:48,735 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-24 07:21:48,738 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-24 07:21:48,738 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-24 07:21:48,771 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-24 07:21:48,771 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:21:27" (1/3) ...
[2023-12-24 07:21:48,771 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb29a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:21:48, skipping insertion in model container
[2023-12-24 07:21:48,772 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:21:28" (2/3) ...
[2023-12-24 07:21:48,772 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb29a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:21:48, skipping insertion in model container
[2023-12-24 07:21:48,772 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:21:48" (3/3) ...
[2023-12-24 07:21:48,773 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-7.i
[2023-12-24 07:21:48,787 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-24 07:21:48,788 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-24 07:21:48,839 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-24 07:21:48,847 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;@29311951, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-24 07:21:48,847 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-24 07:21:48,852 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 150 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 90 states have internal predecessors, (135), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2023-12-24 07:21:48,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 355
[2023-12-24 07:21:48,883 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 07:21:48,884 INFO  L195           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:48,884 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 07:21:48,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 07:21:48,893 INFO  L85        PathProgramCache]: Analyzing trace with hash 1234331032, now seen corresponding path program 1 times
[2023-12-24 07:21:48,907 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 07:21:48,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092158611]
[2023-12-24 07:21:48,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:21:48,909 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 07:21:48,909 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 07:21:48,912 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 07:21:48,922 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 07:21:50,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:21:50,784 INFO  L262         TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-24 07:21:50,806 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:21:50,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 6274 trivial. 0 not checked.
[2023-12-24 07:21:50,886 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 07:21:50,886 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 07:21:50,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092158611]
[2023-12-24 07:21:50,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092158611] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 07:21:50,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-24 07:21:50,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-24 07:21:50,889 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684939812]
[2023-12-24 07:21:50,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 07:21:50,894 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-24 07:21:50,894 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 07:21:50,917 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-24 07:21:50,918 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-24 07:21:50,920 INFO  L87              Difference]: Start difference. First operand  has 150 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 90 states have internal predecessors, (135), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand  has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58)
[2023-12-24 07:21:56,360 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:21:56,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 07:21:56,361 INFO  L93              Difference]: Finished difference Result 295 states and 554 transitions.
[2023-12-24 07:21:56,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-24 07:21:56,874 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 354
[2023-12-24 07:21:56,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 07:21:56,882 INFO  L225             Difference]: With dead ends: 295
[2023-12-24 07:21:56,882 INFO  L226             Difference]: Without dead ends: 146
[2023-12-24 07:21:56,888 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 353 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 07:21:56,893 INFO  L413           NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-24 07:21:56,894 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-24 07:21:56,910 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2023-12-24 07:21:56,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146.
[2023-12-24 07:21:56,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 146 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 86 states have internal predecessors, (125), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2023-12-24 07:21:56,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 241 transitions.
[2023-12-24 07:21:56,949 INFO  L78                 Accepts]: Start accepts. Automaton has 146 states and 241 transitions. Word has length 354
[2023-12-24 07:21:56,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 07:21:56,950 INFO  L495      AbstractCegarLoop]: Abstraction has 146 states and 241 transitions.
[2023-12-24 07:21:56,950 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58)
[2023-12-24 07:21:56,950 INFO  L276                IsEmpty]: Start isEmpty. Operand 146 states and 241 transitions.
[2023-12-24 07:21:56,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 355
[2023-12-24 07:21:56,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 07:21:56,957 INFO  L195           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:57,008 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
[2023-12-24 07:21:57,184 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 07:21:57,185 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 07:21:57,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 07:21:57,186 INFO  L85        PathProgramCache]: Analyzing trace with hash -1917914032, now seen corresponding path program 1 times
[2023-12-24 07:21:57,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 07:21:57,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298415377]
[2023-12-24 07:21:57,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:21:57,187 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 07:21:57,187 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 07:21:57,192 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 07:21:57,193 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 07:21:59,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:21:59,136 INFO  L262         TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 07:21:59,152 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:22:27,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 4101 proven. 237 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked.
[2023-12-24 07:22:27,678 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 07:22:39,240 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 07:22:39,240 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298415377]
[2023-12-24 07:22:39,240 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298415377] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 07:22:39,241 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [286047743]
[2023-12-24 07:22:39,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:22:39,241 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 07:22:39,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 07:22:39,290 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 07:22:39,293 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 07:22:39,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:22:39,973 INFO  L262         TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-24 07:22:39,979 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:22:42,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2023-12-24 07:22:42,347 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 07:22:42,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [286047743] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 07:22:42,347 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-24 07:22:42,347 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16
[2023-12-24 07:22:42,348 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111589922]
[2023-12-24 07:22:42,348 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 07:22:42,350 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-24 07:22:42,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 07:22:42,351 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-24 07:22:42,351 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462
[2023-12-24 07:22:42,352 INFO  L87              Difference]: Start difference. First operand 146 states and 241 transitions. Second operand  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:22:47,424 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:22:51,427 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:22:57,213 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:23:01,218 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:23:05,233 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:23:06,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 07:23:06,476 INFO  L93              Difference]: Finished difference Result 427 states and 702 transitions.
[2023-12-24 07:23:06,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-24 07:23:06,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 354
[2023-12-24 07:23:06,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 07:23:06,482 INFO  L225             Difference]: With dead ends: 427
[2023-12-24 07:23:06,482 INFO  L226             Difference]: Without dead ends: 282
[2023-12-24 07:23:06,485 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462
[2023-12-24 07:23:06,486 INFO  L413           NwaCegarLoop]: 236 mSDtfsCounter, 389 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 122 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time
[2023-12-24 07:23:06,486 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 431 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 24.1s Time]
[2023-12-24 07:23:06,488 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 282 states.
[2023-12-24 07:23:06,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 268.
[2023-12-24 07:23:06,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 268 states, 148 states have (on average 1.3986486486486487) internal successors, (207), 149 states have internal predecessors, (207), 116 states have call successors, (116), 3 states have call predecessors, (116), 3 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116)
[2023-12-24 07:23:06,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 439 transitions.
[2023-12-24 07:23:06,568 INFO  L78                 Accepts]: Start accepts. Automaton has 268 states and 439 transitions. Word has length 354
[2023-12-24 07:23:06,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 07:23:06,571 INFO  L495      AbstractCegarLoop]: Abstraction has 268 states and 439 transitions.
[2023-12-24 07:23:06,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:23:06,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 268 states and 439 transitions.
[2023-12-24 07:23:06,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 355
[2023-12-24 07:23:06,579 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 07:23:06,579 INFO  L195           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:06,587 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2023-12-24 07:23:06,817 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 07:23:06,985 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 07:23:06,985 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 07:23:06,986 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 07:23:06,986 INFO  L85        PathProgramCache]: Analyzing trace with hash 1097189586, now seen corresponding path program 1 times
[2023-12-24 07:23:06,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 07:23:06,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504252415]
[2023-12-24 07:23:06,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:23:06,988 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 07:23:06,988 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 07:23:06,989 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 07:23:07,004 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 07:23:08,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:23:08,759 INFO  L262         TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 07:23:08,767 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:23:37,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 4101 proven. 237 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked.
[2023-12-24 07:23:37,707 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 07:23:51,884 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 07:23:51,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504252415]
[2023-12-24 07:23:51,885 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504252415] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 07:23:51,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1986839436]
[2023-12-24 07:23:51,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:23:51,885 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 07:23:51,885 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 07:23:51,888 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 07:23:51,907 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 07:23:52,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:23:52,841 INFO  L262         TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-24 07:23:52,848 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:23:55,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2023-12-24 07:23:55,565 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 07:23:55,566 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1986839436] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 07:23:55,566 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-24 07:23:55,566 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16
[2023-12-24 07:23:55,566 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641118196]
[2023-12-24 07:23:55,566 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 07:23:55,567 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-24 07:23:55,567 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 07:23:55,568 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-24 07:23:55,568 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462
[2023-12-24 07:23:55,568 INFO  L87              Difference]: Start difference. First operand 268 states and 439 transitions. Second operand  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:24:00,308 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:24:04,312 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:24:10,244 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:24:14,268 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:24:18,302 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:24:19,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 07:24:19,626 INFO  L93              Difference]: Finished difference Result 582 states and 956 transitions.
[2023-12-24 07:24:19,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-24 07:24:19,627 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 354
[2023-12-24 07:24:19,628 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 07:24:19,631 INFO  L225             Difference]: With dead ends: 582
[2023-12-24 07:24:19,631 INFO  L226             Difference]: Without dead ends: 315
[2023-12-24 07:24:19,633 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462
[2023-12-24 07:24:19,634 INFO  L413           NwaCegarLoop]: 260 mSDtfsCounter, 308 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2023-12-24 07:24:19,634 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 571 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 24.0s Time]
[2023-12-24 07:24:19,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 315 states.
[2023-12-24 07:24:19,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 272.
[2023-12-24 07:24:19,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 272 states, 151 states have (on average 1.390728476821192) internal successors, (210), 152 states have internal predecessors, (210), 116 states have call successors, (116), 4 states have call predecessors, (116), 4 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116)
[2023-12-24 07:24:19,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 442 transitions.
[2023-12-24 07:24:19,667 INFO  L78                 Accepts]: Start accepts. Automaton has 272 states and 442 transitions. Word has length 354
[2023-12-24 07:24:19,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 07:24:19,668 INFO  L495      AbstractCegarLoop]: Abstraction has 272 states and 442 transitions.
[2023-12-24 07:24:19,668 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:24:19,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 272 states and 442 transitions.
[2023-12-24 07:24:19,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 355
[2023-12-24 07:24:19,673 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 07:24:19,673 INFO  L195           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:19,724 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 (5)] Forceful destruction successful, exit code 0
[2023-12-24 07:24:19,891 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 07:24:20,087 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 07:24:20,087 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 07:24:20,088 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 07:24:20,088 INFO  L85        PathProgramCache]: Analyzing trace with hash 1777247956, now seen corresponding path program 1 times
[2023-12-24 07:24:20,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 07:24:20,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704006313]
[2023-12-24 07:24:20,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:24:20,089 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 07:24:20,089 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 07:24:20,090 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 07:24:20,092 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 07:24:21,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:24:21,935 INFO  L262         TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 07:24:21,942 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:24:49,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 4101 proven. 237 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked.
[2023-12-24 07:24:49,871 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 07:25:02,188 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 07:25:02,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704006313]
[2023-12-24 07:25:02,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704006313] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 07:25:02,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214178783]
[2023-12-24 07:25:02,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:25:02,189 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 07:25:02,190 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 07:25:02,196 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-24 07:25:02,212 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2023-12-24 07:25:09,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:25:09,188 INFO  L262         TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-24 07:25:09,193 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:25:19,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 2567 proven. 78 refuted. 0 times theorem prover too weak. 3967 trivial. 0 not checked.
[2023-12-24 07:25:19,390 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 07:25:20,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2023-12-24 07:25:20,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214178783] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-24 07:25:20,818 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-24 07:25:20,818 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 10] total 23
[2023-12-24 07:25:20,819 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724868367]
[2023-12-24 07:25:20,819 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 07:25:20,820 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-24 07:25:20,820 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 07:25:20,822 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-24 07:25:20,822 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812
[2023-12-24 07:25:20,823 INFO  L87              Difference]: Start difference. First operand 272 states and 442 transitions. Second operand  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:25:26,955 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:25:30,962 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 07:25:30,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 07:25:30,971 INFO  L93              Difference]: Finished difference Result 543 states and 883 transitions.
[2023-12-24 07:25:31,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-24 07:25:31,541 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 354
[2023-12-24 07:25:31,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 07:25:31,545 INFO  L225             Difference]: With dead ends: 543
[2023-12-24 07:25:31,545 INFO  L226             Difference]: Without dead ends: 272
[2023-12-24 07:25:31,547 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1165 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812
[2023-12-24 07:25:31,548 INFO  L413           NwaCegarLoop]: 228 mSDtfsCounter, 48 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time
[2023-12-24 07:25:31,548 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 409 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time]
[2023-12-24 07:25:31,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 272 states.
[2023-12-24 07:25:31,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272.
[2023-12-24 07:25:31,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 272 states, 151 states have (on average 1.3841059602649006) internal successors, (209), 152 states have internal predecessors, (209), 116 states have call successors, (116), 4 states have call predecessors, (116), 4 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116)
[2023-12-24 07:25:31,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 441 transitions.
[2023-12-24 07:25:31,579 INFO  L78                 Accepts]: Start accepts. Automaton has 272 states and 441 transitions. Word has length 354
[2023-12-24 07:25:31,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 07:25:31,580 INFO  L495      AbstractCegarLoop]: Abstraction has 272 states and 441 transitions.
[2023-12-24 07:25:31,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2023-12-24 07:25:31,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 272 states and 441 transitions.
[2023-12-24 07:25:31,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 355
[2023-12-24 07:25:31,594 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 07:25:31,594 INFO  L195           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:25:31,648 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 (7)] Forceful destruction successful, exit code 0
[2023-12-24 07:25:31,841 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0
[2023-12-24 07:25:32,008 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-24 07:25:32,009 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 07:25:32,009 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 07:25:32,009 INFO  L85        PathProgramCache]: Analyzing trace with hash 756179602, now seen corresponding path program 1 times
[2023-12-24 07:25:32,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 07:25:32,010 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906366089]
[2023-12-24 07:25:32,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:25:32,011 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 07:25:32,011 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 07:25:32,012 INFO  L229       MonitoredProcess]: Starting monitored process 9 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 07:25:32,014 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 (9)] Waiting until timeout for monitored process
[2023-12-24 07:25:33,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:25:33,619 INFO  L262         TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 07:25:33,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:26:00,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 4101 proven. 237 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked.
[2023-12-24 07:26:00,890 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 07:26:14,076 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 07:26:14,076 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906366089]
[2023-12-24 07:26:14,076 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906366089] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 07:26:14,076 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1489508825]
[2023-12-24 07:26:14,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 07:26:14,076 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 07:26:14,076 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 07:26:14,077 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-24 07:26:14,078 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process
[2023-12-24 07:26:44,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 07:26:44,842 INFO  L262         TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 116 conjunts are in the unsatisfiable core
[2023-12-24 07:26:44,857 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 07:32:42,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 4176 proven. 1788 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked.
[2023-12-24 07:32:42,612 INFO  L327         TraceCheckSpWp]: Computing backward predicates...