/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_amount50_file-66.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-24 11:02:42,176 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-24 11:02:42,240 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 11:02:42,243 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-24 11:02:42,243 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-24 11:02:42,257 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-24 11:02:42,257 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-24 11:02:42,257 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-24 11:02:42,258 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-24 11:02:42,258 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-24 11:02:42,258 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-24 11:02:42,258 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-24 11:02:42,259 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-24 11:02:42,259 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-24 11:02:42,259 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-24 11:02:42,259 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-24 11:02:42,260 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-24 11:02:42,260 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-24 11:02:42,260 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-24 11:02:42,260 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-24 11:02:42,261 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-24 11:02:42,263 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-24 11:02:42,263 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-24 11:02:42,263 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-24 11:02:42,265 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-24 11:02:42,266 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-24 11:02:42,266 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-24 11:02:42,266 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-24 11:02:42,266 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-24 11:02:42,266 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 11:02:42,267 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-24 11:02:42,267 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-24 11:02:42,267 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-24 11:02:42,267 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-24 11:02:42,267 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-24 11:02:42,267 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-24 11:02:42,270 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-24 11:02:42,270 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-24 11:02:42,270 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-24 11:02:42,270 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-24 11:02:42,270 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-24 11:02:42,270 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-24 11:02:42,431 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-24 11:02:42,451 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-24 11:02:42,454 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-24 11:02:42,455 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-24 11:02:42,455 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-24 11:02:42,456 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-66.i
[2023-12-24 11:02:43,593 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-24 11:02:43,743 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-24 11:02:43,744 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-66.i
[2023-12-24 11:02:43,750 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d967a000b/e06c1553e60047c898f949de5f27d85b/FLAG2e642f76d
[2023-12-24 11:02:43,762 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d967a000b/e06c1553e60047c898f949de5f27d85b
[2023-12-24 11:02:43,763 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-24 11:02:43,767 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-24 11:02:43,768 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-24 11:02:43,768 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-24 11:02:43,771 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-24 11:02:43,771 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:43,773 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca53946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43, skipping insertion in model container
[2023-12-24 11:02:43,773 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:43,798 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-24 11:02:43,889 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_amount50_file-66.i[915,928]
[2023-12-24 11:02:43,920 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 11:02:43,949 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-24 11:02:43,963 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_amount50_file-66.i[915,928]
[2023-12-24 11:02:43,979 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 11:02:43,990 INFO  L206         MainTranslator]: Completed translation
[2023-12-24 11:02:43,991 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43 WrapperNode
[2023-12-24 11:02:43,991 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-24 11:02:43,991 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-24 11:02:43,991 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-24 11:02:43,992 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-24 11:02:43,996 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,006 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,029 INFO  L138                Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126
[2023-12-24 11:02:44,030 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-24 11:02:44,030 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-24 11:02:44,030 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-24 11:02:44,030 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-24 11:02:44,038 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,038 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,040 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,049 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 11:02:44,049 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,049 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,055 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,057 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,058 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,059 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,061 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-24 11:02:44,062 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-24 11:02:44,062 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-24 11:02:44,062 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-24 11:02:44,063 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (1/1) ...
[2023-12-24 11:02:44,081 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 11:02:44,091 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-24 11:02:44,101 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 11:02:44,133 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 11:02:44,146 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-24 11:02:44,146 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-24 11:02:44,146 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-24 11:02:44,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-24 11:02:44,148 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-24 11:02:44,148 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-24 11:02:44,209 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-24 11:02:44,211 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-24 11:02:44,500 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-24 11:02:44,535 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-24 11:02:44,535 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-24 11:02:44,535 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:02:44 BoogieIcfgContainer
[2023-12-24 11:02:44,536 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-24 11:02:44,537 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-24 11:02:44,537 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-24 11:02:44,539 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-24 11:02:44,539 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:02:43" (1/3) ...
[2023-12-24 11:02:44,540 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68302ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:02:44, skipping insertion in model container
[2023-12-24 11:02:44,540 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:02:43" (2/3) ...
[2023-12-24 11:02:44,540 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68302ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:02:44, skipping insertion in model container
[2023-12-24 11:02:44,540 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:02:44" (3/3) ...
[2023-12-24 11:02:44,541 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-66.i
[2023-12-24 11:02:44,552 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-24 11:02:44,552 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-24 11:02:44,580 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-24 11:02:44,584 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;@294a19f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-24 11:02:44,585 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-24 11:02:44,587 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 55 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2023-12-24 11:02:44,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2023-12-24 11:02:44,595 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 11:02:44,596 INFO  L195           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:44,596 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 11:02:44,599 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 11:02:44,600 INFO  L85        PathProgramCache]: Analyzing trace with hash 1567801026, now seen corresponding path program 1 times
[2023-12-24 11:02:44,609 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 11:02:44,609 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110821927]
[2023-12-24 11:02:44,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 11:02:44,610 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 11:02:44,610 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 11:02:44,612 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 11:02:44,675 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 11:02:44,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 11:02:44,806 INFO  L262         TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 11:02:44,814 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 11:02:46,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 406 proven. 78 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked.
[2023-12-24 11:02:46,422 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 11:02:50,640 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 11:02:50,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110821927]
[2023-12-24 11:02:50,640 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [110821927] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 11:02:50,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [245456163]
[2023-12-24 11:02:50,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 11:02:50,641 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-24 11:02:50,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-24 11:02:50,682 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-24 11:02:50,684 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2023-12-24 11:02:51,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 11:02:51,004 INFO  L262         TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-24 11:02:51,009 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 11:02:59,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 388 proven. 72 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked.
[2023-12-24 11:02:59,585 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 11:03:04,340 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [245456163] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-24 11:03:04,341 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-24 11:03:04,341 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22
[2023-12-24 11:03:04,343 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629590550]
[2023-12-24 11:03:04,343 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-24 11:03:04,346 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-12-24 11:03:04,346 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 11:03:04,369 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-12-24 11:03:04,370 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=650, Unknown=1, NotChecked=0, Total=756
[2023-12-24 11:03:04,372 INFO  L87              Difference]: Start difference. First operand  has 55 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand  has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 7 states have call successors, (31), 7 states have call predecessors, (31), 12 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32)
[2023-12-24 11:03:20,548 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-24 11:03:23,520 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-24 11:03:27,563 WARN  L539   Checker$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 [0]
[2023-12-24 11:03:37,776 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-24 11:03:45,929 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-24 11:03:58,444 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-24 11:04:00,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 11:04:00,092 INFO  L93              Difference]: Finished difference Result 159 states and 264 transitions.
[2023-12-24 11:04:00,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2023-12-24 11:04:00,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 7 states have call successors, (31), 7 states have call predecessors, (31), 12 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 115
[2023-12-24 11:04:00,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 11:04:00,103 INFO  L225             Difference]: With dead ends: 159
[2023-12-24 11:04:00,103 INFO  L226             Difference]: Without dead ends: 105
[2023-12-24 11:04:00,106 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=551, Invalid=2204, Unknown=1, NotChecked=0, Total=2756
[2023-12-24 11:04:00,129 INFO  L413           NwaCegarLoop]: 60 mSDtfsCounter, 201 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 91 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time
[2023-12-24 11:04:00,131 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 460 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 882 Invalid, 2 Unknown, 0 Unchecked, 43.0s Time]
[2023-12-24 11:04:00,146 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2023-12-24 11:04:00,187 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98.
[2023-12-24 11:04:00,189 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 98 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-24 11:04:00,199 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions.
[2023-12-24 11:04:00,201 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 115
[2023-12-24 11:04:00,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 11:04:00,202 INFO  L495      AbstractCegarLoop]: Abstraction has 98 states and 129 transitions.
[2023-12-24 11:04:00,202 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 7 states have call successors, (31), 7 states have call predecessors, (31), 12 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32)
[2023-12-24 11:04:00,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions.
[2023-12-24 11:04:00,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2023-12-24 11:04:00,207 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 11:04:00,207 INFO  L195           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:00,214 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 11:04:00,411 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2023-12-24 11:04:00,608 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=3,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-24 11:04:00,608 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 11:04:00,609 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 11:04:00,609 INFO  L85        PathProgramCache]: Analyzing trace with hash 1567860608, now seen corresponding path program 1 times
[2023-12-24 11:04:00,609 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 11:04:00,610 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707591937]
[2023-12-24 11:04:00,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 11:04:00,610 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 11:04:00,610 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 11:04:00,614 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)
[2023-12-24 11:04:00,616 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
[2023-12-24 11:04:00,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 11:04:00,825 INFO  L262         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-12-24 11:04:00,831 INFO  L285         TraceCheckSpWp]: Computing forward predicates...