/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 06:46:13,771 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 06:46:13,818 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-06 06:46:13,821 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 06:46:13,822 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 06:46:13,835 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 06:46:13,836 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 06:46:13,836 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 06:46:13,837 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 06:46:13,837 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 06:46:13,837 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 06:46:13,837 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 06:46:13,838 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 06:46:13,838 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 06:46:13,838 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 06:46:13,838 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 06:46:13,839 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 06:46:13,839 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 06:46:13,839 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 06:46:13,839 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 06:46:13,839 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 06:46:13,840 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 06:46:13,840 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 06:46:13,840 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 06:46:13,841 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 06:46:13,841 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 06:46:13,841 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 06:46:13,841 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 06:46:13,842 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 06:46:13,842 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 06:46:13,842 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 06:46:13,842 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:46:13,842 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 06:46:13,843 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 06:46:13,844 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 06:46:13,844 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 06:46:13,844 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF
[2024-11-06 06:46:14,008 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 06:46:14,044 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 06:46:14,050 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 06:46:14,052 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 06:46:14,055 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 06:46:14,057 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c
[2024-11-06 06:46:15,406 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 06:46:15,609 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 06:46:15,610 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c
[2024-11-06 06:46:15,627 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a109791/e3cf3e51a1104068ab3af12b76c81839/FLAGa5705c083
[2024-11-06 06:46:15,983 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a109791/e3cf3e51a1104068ab3af12b76c81839
[2024-11-06 06:46:15,986 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 06:46:15,988 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 06:46:15,990 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 06:46:15,990 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 06:46:15,994 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 06:46:15,995 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:46:15" (1/1) ...
[2024-11-06 06:46:15,995 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f7465f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:15, skipping insertion in model container
[2024-11-06 06:46:15,996 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:46:15" (1/1) ...
[2024-11-06 06:46:16,042 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 06:46:16,219 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185]
[2024-11-06 06:46:16,383 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:46:16,398 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 06:46:16,416 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1172,1185]
[2024-11-06 06:46:16,532 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:46:16,570 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 06:46:16,571 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16 WrapperNode
[2024-11-06 06:46:16,571 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 06:46:16,572 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 06:46:16,572 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 06:46:16,572 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 06:46:16,586 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,627 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,698 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1116
[2024-11-06 06:46:16,699 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 06:46:16,699 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 06:46:16,699 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 06:46:16,699 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 06:46:16,712 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,712 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,728 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,768 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].
[2024-11-06 06:46:16,768 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,768 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,790 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,793 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,797 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,800 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,809 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 06:46:16,810 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 06:46:16,810 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 06:46:16,810 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 06:46:16,810 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (1/1) ...
[2024-11-06 06:46:16,814 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:46:16,832 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 06:46:16,852 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)
[2024-11-06 06:46:16,858 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
[2024-11-06 06:46:16,882 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 06:46:16,882 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 06:46:16,882 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 06:46:16,882 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 06:46:17,121 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 06:46:17,123 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 06:46:17,845 INFO  L?                        ?]: Removed 57 outVars from TransFormulas that were not future-live.
[2024-11-06 06:46:17,846 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 06:46:17,860 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 06:46:17,862 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 06:46:17,862 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:46:17 BoogieIcfgContainer
[2024-11-06 06:46:17,862 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 06:46:17,864 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 06:46:17,864 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 06:46:17,867 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 06:46:17,868 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:46:15" (1/3) ...
[2024-11-06 06:46:17,868 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4d0ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:46:17, skipping insertion in model container
[2024-11-06 06:46:17,868 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:46:16" (2/3) ...
[2024-11-06 06:46:17,868 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4d0ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:46:17, skipping insertion in model container
[2024-11-06 06:46:17,869 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:46:17" (3/3) ...
[2024-11-06 06:46:17,870 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.1.prop1-func-interl.c
[2024-11-06 06:46:17,881 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 06:46:17,881 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 06:46:17,926 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 06:46:17,930 INFO  L333      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, 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;@117a2314, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 06:46:17,931 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 06:46:17,933 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:17,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-06 06:46:17,937 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:46:17,938 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-06 06:46:17,939 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:46:17,943 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:46:17,943 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-06 06:46:17,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:46:17,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721523522]
[2024-11-06 06:46:17,953 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:46:17,953 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
[2024-11-06 06:46:17,953 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:46:17,958 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)
[2024-11-06 06:46:17,959 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
[2024-11-06 06:46:18,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:46:18,172 INFO  L255         TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-06 06:46:18,182 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:46:18,356 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 06:46:18,356 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 06:46:18,356 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:46:18,357 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721523522]
[2024-11-06 06:46:18,358 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721523522] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 06:46:18,358 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 06:46:18,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-06 06:46:18,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998403536]
[2024-11-06 06:46:18,360 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 06:46:18,363 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 06:46:18,363 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:46:18,379 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 06:46:18,379 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 06:46:18,381 INFO  L87              Difference]: Start difference. First operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:18,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:46:18,449 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-06 06:46:18,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 06:46:18,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-06 06:46:18,453 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:46:18,457 INFO  L225             Difference]: With dead ends: 18
[2024-11-06 06:46:18,457 INFO  L226             Difference]: Without dead ends: 10
[2024-11-06 06:46:18,460 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-06 06:46:18,464 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 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
[2024-11-06 06:46:18,464 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 06:46:18,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-06 06:46:18,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-06 06:46:18,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:18,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-06 06:46:18,484 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-06 06:46:18,484 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:46:18,485 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-06 06:46:18,485 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:18,485 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-06 06:46:18,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-06 06:46:18,485 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:46:18,485 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:46:18,493 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
[2024-11-06 06:46:18,686 WARN  L453      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
[2024-11-06 06:46:18,687 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:46:18,687 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:46:18,687 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-06 06:46:18,688 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:46:18,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472457577]
[2024-11-06 06:46:18,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:46:18,688 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
[2024-11-06 06:46:18,689 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:46:18,690 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)
[2024-11-06 06:46:18,692 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
[2024-11-06 06:46:19,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:46:19,115 INFO  L255         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-06 06:46:19,124 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:46:19,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 06:46:19,335 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:46:28,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 06:46:28,973 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:46:28,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472457577]
[2024-11-06 06:46:28,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472457577] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 06:46:28,974 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 06:46:28,974 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-06 06:46:28,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85627542]
[2024-11-06 06:46:28,975 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 06:46:28,976 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-06 06:46:28,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:46:28,976 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-06 06:46:28,976 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=60, Unknown=2, NotChecked=0, Total=90
[2024-11-06 06:46:28,977 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:31,709 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:46:31,709 INFO  L93              Difference]: Finished difference Result 18 states and 19 transitions.
[2024-11-06 06:46:31,710 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-06 06:46:31,710 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-06 06:46:31,710 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:46:31,710 INFO  L225             Difference]: With dead ends: 18
[2024-11-06 06:46:31,710 INFO  L226             Difference]: Without dead ends: 16
[2024-11-06 06:46:31,711 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=73, Invalid=135, Unknown=2, NotChecked=0, Total=210
[2024-11-06 06:46:31,712 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-06 06:46:31,712 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-06 06:46:31,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-06 06:46:31,715 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-06 06:46:31,715 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:31,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-06 06:46:31,715 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2024-11-06 06:46:31,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:46:31,715 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-06 06:46:31,716 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:31,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-06 06:46:31,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-06 06:46:31,716 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:46:31,716 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-06 06:46:31,721 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 (3)] Ended with exit code 0
[2024-11-06 06:46:31,916 WARN  L453      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
[2024-11-06 06:46:31,917 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:46:31,918 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:46:31,918 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times
[2024-11-06 06:46:31,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:46:31,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140518623]
[2024-11-06 06:46:31,919 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-06 06:46:31,919 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
[2024-11-06 06:46:31,919 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:46:31,922 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)
[2024-11-06 06:46:31,926 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
[2024-11-06 06:46:32,458 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-06 06:46:32,458 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-06 06:46:32,474 INFO  L255         TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-11-06 06:46:32,484 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:46:38,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 06:46:38,248 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:46:49,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 06:46:49,584 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:46:49,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140518623]
[2024-11-06 06:46:49,585 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140518623] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 06:46:49,585 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 06:46:49,585 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2024-11-06 06:46:49,585 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891137320]
[2024-11-06 06:46:49,585 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 06:46:49,585 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-06 06:46:49,586 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:46:49,586 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-06 06:46:49,586 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306
[2024-11-06 06:46:49,587 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:56,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:46:56,965 INFO  L93              Difference]: Finished difference Result 27 states and 29 transitions.
[2024-11-06 06:46:56,970 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2024-11-06 06:46:56,970 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-06 06:46:56,971 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:46:56,971 INFO  L225             Difference]: With dead ends: 27
[2024-11-06 06:46:56,971 INFO  L226             Difference]: Without dead ends: 25
[2024-11-06 06:46:56,971 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756
[2024-11-06 06:46:56,972 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-06 06:46:56,972 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-06 06:46:56,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-06 06:46:56,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2024-11-06 06:46:56,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:56,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2024-11-06 06:46:56,983 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14
[2024-11-06 06:46:56,984 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:46:56,984 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2024-11-06 06:46:56,984 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-06 06:46:56,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2024-11-06 06:46:56,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-06 06:46:56,985 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:46:56,985 INFO  L215           NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1]
[2024-11-06 06:46:56,994 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 (4)] Ended with exit code 0
[2024-11-06 06:46:57,186 WARN  L453      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
[2024-11-06 06:46:57,186 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:46:57,189 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:46:57,190 INFO  L85        PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 3 times
[2024-11-06 06:46:57,192 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:46:57,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475501859]
[2024-11-06 06:46:57,192 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-06 06:46:57,193 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
[2024-11-06 06:46:57,193 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:46:57,196 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)
[2024-11-06 06:46:57,197 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
[2024-11-06 06:46:58,985 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2024-11-06 06:46:58,985 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-06 06:46:59,005 INFO  L255         TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 73 conjuncts are in the unsatisfiable core
[2024-11-06 06:46:59,031 INFO  L278         TraceCheckSpWp]: Computing forward predicates...