/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-52.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-22 20:02:34,523 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-22 20:02:34,587 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-22 20:02:34,590 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-22 20:02:34,590 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-22 20:02:34,603 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-22 20:02:34,604 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-22 20:02:34,605 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-22 20:02:34,605 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-22 20:02:34,608 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-22 20:02:34,608 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-22 20:02:34,609 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-22 20:02:34,609 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-22 20:02:34,610 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-22 20:02:34,610 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-22 20:02:34,610 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-22 20:02:34,611 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-22 20:02:34,612 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-22 20:02:34,613 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-22 20:02:34,613 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-22 20:02:34,613 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-22 20:02:34,613 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 20:02:34,614 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-22 20:02:34,614 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-22 20:02:34,615 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-22 20:02:34,615 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-22 20:02:34,615 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-22 20:02:34,615 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-22 20:02:34,816 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-22 20:02:34,834 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-22 20:02:34,836 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-22 20:02:34,837 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-22 20:02:34,837 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-22 20:02:34,839 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-52.i
[2023-12-22 20:02:35,836 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-22 20:02:36,001 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-22 20:02:36,001 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-52.i
[2023-12-22 20:02:36,007 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40dc5daa4/9719eafb5ae04192bc64f917ac347211/FLAG79a398d1c
[2023-12-22 20:02:36,425 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40dc5daa4/9719eafb5ae04192bc64f917ac347211
[2023-12-22 20:02:36,426 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-22 20:02:36,427 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-22 20:02:36,428 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-22 20:02:36,428 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-22 20:02:36,431 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-22 20:02:36,431 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,432 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645e0a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36, skipping insertion in model container
[2023-12-22 20:02:36,432 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,463 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-22 20:02:36,567 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-52.i[919,932]
[2023-12-22 20:02:36,599 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 20:02:36,609 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-22 20:02:36,616 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-52.i[919,932]
[2023-12-22 20:02:36,630 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 20:02:36,641 INFO  L206         MainTranslator]: Completed translation
[2023-12-22 20:02:36,642 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36 WrapperNode
[2023-12-22 20:02:36,643 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-22 20:02:36,643 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-22 20:02:36,643 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-22 20:02:36,643 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-22 20:02:36,648 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,654 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,676 INFO  L138                Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111
[2023-12-22 20:02:36,679 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-22 20:02:36,680 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-22 20:02:36,680 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-22 20:02:36,680 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-22 20:02:36,687 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,687 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,689 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,714 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-22 20:02:36,714 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,714 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,719 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,721 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,722 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,723 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,726 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-22 20:02:36,726 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-22 20:02:36,726 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-22 20:02:36,726 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-22 20:02:36,727 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (1/1) ...
[2023-12-22 20:02:36,739 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 20:02:36,748 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-22 20:02:36,760 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-22 20:02:36,769 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-22 20:02:36,780 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-22 20:02:36,780 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-22 20:02:36,780 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-22 20:02:36,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-22 20:02:36,781 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-22 20:02:36,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-22 20:02:36,833 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-22 20:02:36,834 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-22 20:02:37,048 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-22 20:02:37,110 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-22 20:02:37,111 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-22 20:02:37,111 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:02:37 BoogieIcfgContainer
[2023-12-22 20:02:37,111 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-22 20:02:37,113 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-22 20:02:37,114 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-22 20:02:37,116 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-22 20:02:37,116 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:02:36" (1/3) ...
[2023-12-22 20:02:37,117 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68686d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:02:37, skipping insertion in model container
[2023-12-22 20:02:37,117 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:02:36" (2/3) ...
[2023-12-22 20:02:37,117 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68686d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:02:37, skipping insertion in model container
[2023-12-22 20:02:37,118 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:02:37" (3/3) ...
[2023-12-22 20:02:37,119 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-52.i
[2023-12-22 20:02:37,131 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-22 20:02:37,131 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-22 20:02:37,180 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-22 20:02:37,185 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;@2c384e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-22 20:02:37,185 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-22 20:02:37,188 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 42 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-22 20:02:37,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2023-12-22 20:02:37,203 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 20:02:37,203 INFO  L195           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 20:02:37,204 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 20:02:37,209 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 20:02:37,209 INFO  L85        PathProgramCache]: Analyzing trace with hash 1108415971, now seen corresponding path program 1 times
[2023-12-22 20:02:37,219 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 20:02:37,220 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943703918]
[2023-12-22 20:02:37,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 20:02:37,220 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:02:37,220 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 20:02:37,222 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 20:02:37,240 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-22 20:02:37,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 20:02:37,356 INFO  L262         TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-22 20:02:37,371 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 20:02:37,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2023-12-22 20:02:37,417 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 20:02:37,417 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 20:02:37,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943703918]
[2023-12-22 20:02:37,418 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943703918] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 20:02:37,418 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 20:02:37,418 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-22 20:02:37,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87043359]
[2023-12-22 20:02:37,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 20:02:37,422 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-22 20:02:37,423 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 20:02:37,451 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-22 20:02:37,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 20:02:37,453 INFO  L87              Difference]: Start difference. First operand  has 42 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:02:37,497 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 20:02:37,498 INFO  L93              Difference]: Finished difference Result 81 states and 142 transitions.
[2023-12-22 20:02:37,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-22 20:02:37,502 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78
[2023-12-22 20:02:37,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 20:02:37,507 INFO  L225             Difference]: With dead ends: 81
[2023-12-22 20:02:37,507 INFO  L226             Difference]: Without dead ends: 40
[2023-12-22 20:02:37,509 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 20:02:37,512 INFO  L413           NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-22 20:02:37,513 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-22 20:02:37,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-12-22 20:02:37,534 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-12-22 20:02:37,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-22 20:02:37,536 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 61 transitions.
[2023-12-22 20:02:37,538 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 61 transitions. Word has length 78
[2023-12-22 20:02:37,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 20:02:37,538 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 61 transitions.
[2023-12-22 20:02:37,538 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:02:37,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 61 transitions.
[2023-12-22 20:02:37,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2023-12-22 20:02:37,541 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 20:02:37,542 INFO  L195           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 20:02:37,545 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-22 20:02:37,742 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:02:37,742 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 20:02:37,743 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 20:02:37,743 INFO  L85        PathProgramCache]: Analyzing trace with hash 196996579, now seen corresponding path program 1 times
[2023-12-22 20:02:37,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 20:02:37,743 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088961166]
[2023-12-22 20:02:37,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 20:02:37,744 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:02:37,744 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 20:02:37,745 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 20:02:37,747 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-22 20:02:37,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 20:02:37,809 INFO  L262         TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-22 20:02:37,812 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 20:02:37,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-22 20:02:37,845 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 20:02:37,845 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 20:02:37,845 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088961166]
[2023-12-22 20:02:37,845 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088961166] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 20:02:37,845 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 20:02:37,845 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-22 20:02:37,845 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291297100]
[2023-12-22 20:02:37,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 20:02:37,846 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-22 20:02:37,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 20:02:37,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-22 20:02:37,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 20:02:37,847 INFO  L87              Difference]: Start difference. First operand 40 states and 61 transitions. Second operand  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:02:37,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 20:02:37,909 INFO  L93              Difference]: Finished difference Result 103 states and 156 transitions.
[2023-12-22 20:02:37,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-22 20:02:37,910 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78
[2023-12-22 20:02:37,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 20:02:37,913 INFO  L225             Difference]: With dead ends: 103
[2023-12-22 20:02:37,913 INFO  L226             Difference]: Without dead ends: 64
[2023-12-22 20:02:37,913 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 20:02:37,914 INFO  L413           NwaCegarLoop]: 88 mSDtfsCounter, 56 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-22 20:02:37,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 123 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-22 20:02:37,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2023-12-22 20:02:37,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39.
[2023-12-22 20:02:37,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-22 20:02:37,926 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 58 transitions.
[2023-12-22 20:02:37,926 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 58 transitions. Word has length 78
[2023-12-22 20:02:37,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 20:02:37,927 INFO  L495      AbstractCegarLoop]: Abstraction has 39 states and 58 transitions.
[2023-12-22 20:02:37,927 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:02:37,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 58 transitions.
[2023-12-22 20:02:37,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2023-12-22 20:02:37,928 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 20:02:37,928 INFO  L195           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 20:02:37,932 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-22 20:02:38,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:02:38,133 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 20:02:38,134 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 20:02:38,134 INFO  L85        PathProgramCache]: Analyzing trace with hash -1890639003, now seen corresponding path program 1 times
[2023-12-22 20:02:38,135 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 20:02:38,135 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6763025]
[2023-12-22 20:02:38,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 20:02:38,135 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:02:38,135 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 20:02:38,136 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 20:02:38,137 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-22 20:02:38,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 20:02:38,205 INFO  L262         TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-22 20:02:38,207 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 20:02:38,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-22 20:02:38,300 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 20:02:38,300 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 20:02:38,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6763025]
[2023-12-22 20:02:38,304 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [6763025] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 20:02:38,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 20:02:38,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-22 20:02:38,309 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478846598]
[2023-12-22 20:02:38,309 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 20:02:38,309 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-22 20:02:38,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 20:02:38,310 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-22 20:02:38,310 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-22 20:02:38,310 INFO  L87              Difference]: Start difference. First operand 39 states and 58 transitions. Second operand  has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:02:41,878 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:02:45,890 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:02:49,529 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:02:53,357 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:02:57,131 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:00,924 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:04,849 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:07,740 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:11,757 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:14,999 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:19,012 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:22,953 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:26,933 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:29,792 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:33,571 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:37,588 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:41,047 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:44,762 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:48,546 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 20:03:48,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 20:03:48,558 INFO  L93              Difference]: Finished difference Result 115 states and 172 transitions.
[2023-12-22 20:03:48,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-22 20:03:48,558 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78
[2023-12-22 20:03:48,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 20:03:48,560 INFO  L225             Difference]: With dead ends: 115
[2023-12-22 20:03:48,560 INFO  L226             Difference]: Without dead ends: 77
[2023-12-22 20:03:48,561 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-22 20:03:48,561 INFO  L413           NwaCegarLoop]: 85 mSDtfsCounter, 80 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.2s IncrementalHoareTripleChecker+Time
[2023-12-22 20:03:48,561 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 133 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 70.2s Time]
[2023-12-22 20:03:48,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-12-22 20:03:48,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 42.
[2023-12-22 20:03:48,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-12-22 20:03:48,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions.
[2023-12-22 20:03:48,567 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 61 transitions. Word has length 78
[2023-12-22 20:03:48,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 20:03:48,568 INFO  L495      AbstractCegarLoop]: Abstraction has 42 states and 61 transitions.
[2023-12-22 20:03:48,568 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2023-12-22 20:03:48,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 61 transitions.
[2023-12-22 20:03:48,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2023-12-22 20:03:48,569 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 20:03:48,569 INFO  L195           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 20:03:48,575 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-22 20:03:48,772 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:03:48,772 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 20:03:48,772 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 20:03:48,773 INFO  L85        PathProgramCache]: Analyzing trace with hash 629320931, now seen corresponding path program 1 times
[2023-12-22 20:03:48,773 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 20:03:48,773 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734342176]
[2023-12-22 20:03:48,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 20:03:48,773 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 20:03:48,773 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 20:03:48,774 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 20:03:48,795 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-22 20:03:48,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 20:03:48,890 INFO  L262         TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-12-22 20:03:48,895 INFO  L285         TraceCheckSpWp]: Computing forward predicates...