/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound20.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-21 06:49:43,147 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-21 06:49:43,201 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-21 06:49:43,204 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-21 06:49:43,204 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-21 06:49:43,218 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-21 06:49:43,218 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-21 06:49:43,218 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-21 06:49:43,219 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-21 06:49:43,219 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-21 06:49:43,219 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-21 06:49:43,219 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-21 06:49:43,220 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-21 06:49:43,220 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-21 06:49:43,220 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-21 06:49:43,220 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-21 06:49:43,221 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-21 06:49:43,221 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-21 06:49:43,221 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-21 06:49:43,221 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-21 06:49:43,221 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-21 06:49:43,222 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-21 06:49:43,222 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-21 06:49:43,222 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-21 06:49:43,222 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-21 06:49:43,222 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-21 06:49:43,223 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-21 06:49:43,223 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-21 06:49:43,223 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-21 06:49:43,223 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-21 06:49:43,223 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-21 06:49:43,223 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-21 06:49:43,224 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 06:49:43,224 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-21 06:49:43,224 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-21 06:49:43,224 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-21 06:49:43,224 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-21 06:49:43,225 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-21 06:49:43,225 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-21 06:49:43,225 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-21 06:49:43,225 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-21 06:49:43,236 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-21 06:49:43,236 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-21 06:49:43,236 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-21 06:49:43,418 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-21 06:49:43,438 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-21 06:49:43,440 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-21 06:49:43,441 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-21 06:49:43,441 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-21 06:49:43,442 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound20.c
[2023-12-21 06:49:44,472 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-21 06:49:44,629 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-21 06:49:44,629 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound20.c
[2023-12-21 06:49:44,634 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c886e396/8bb6585d1b134322842cbadeaf2145ea/FLAG14182a7d5
[2023-12-21 06:49:44,647 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c886e396/8bb6585d1b134322842cbadeaf2145ea
[2023-12-21 06:49:44,649 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-21 06:49:44,650 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-21 06:49:44,651 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-21 06:49:44,651 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-21 06:49:44,654 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-21 06:49:44,654 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,655 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef00158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44, skipping insertion in model container
[2023-12-21 06:49:44,655 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,670 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-21 06:49:44,770 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound20.c[554,567]
[2023-12-21 06:49:44,779 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 06:49:44,785 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-21 06:49:44,792 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound20.c[554,567]
[2023-12-21 06:49:44,797 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 06:49:44,806 INFO  L206         MainTranslator]: Completed translation
[2023-12-21 06:49:44,806 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44 WrapperNode
[2023-12-21 06:49:44,806 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-21 06:49:44,807 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-21 06:49:44,807 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-21 06:49:44,807 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-21 06:49:44,811 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,815 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,835 INFO  L138                Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39
[2023-12-21 06:49:44,835 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-21 06:49:44,836 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-21 06:49:44,836 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-21 06:49:44,836 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-21 06:49:44,845 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,845 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,855 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,867 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].
[2023-12-21 06:49:44,867 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,868 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,869 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,872 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,872 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,873 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,874 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-21 06:49:44,886 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-21 06:49:44,886 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-21 06:49:44,886 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-21 06:49:44,887 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (1/1) ...
[2023-12-21 06:49:44,891 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 06:49:44,913 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 06:49:44,933 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)
[2023-12-21 06:49:44,953 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
[2023-12-21 06:49:44,958 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-21 06:49:44,959 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-21 06:49:44,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-21 06:49:44,959 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-21 06:49:44,959 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-21 06:49:44,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-21 06:49:44,959 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-12-21 06:49:44,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-12-21 06:49:45,000 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-21 06:49:45,002 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-21 06:49:45,126 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-21 06:49:45,149 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-21 06:49:45,149 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-21 06:49:45,149 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:49:45 BoogieIcfgContainer
[2023-12-21 06:49:45,150 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-21 06:49:45,164 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-21 06:49:45,164 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-21 06:49:45,166 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-21 06:49:45,166 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:49:44" (1/3) ...
[2023-12-21 06:49:45,167 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779188df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:49:45, skipping insertion in model container
[2023-12-21 06:49:45,167 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:49:44" (2/3) ...
[2023-12-21 06:49:45,167 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779188df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:49:45, skipping insertion in model container
[2023-12-21 06:49:45,167 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:49:45" (3/3) ...
[2023-12-21 06:49:45,168 INFO  L112   eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c
[2023-12-21 06:49:45,180 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-21 06:49:45,181 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-21 06:49:45,214 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-21 06:49:45,220 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;@ce723e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-21 06:49:45,221 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-21 06:49:45,224 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-12-21 06:49:45,229 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2023-12-21 06:49:45,230 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 06:49:45,230 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 06:49:45,230 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 06:49:45,233 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 06:49:45,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 885123622, now seen corresponding path program 1 times
[2023-12-21 06:49:45,239 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 06:49:45,239 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818380617]
[2023-12-21 06:49:45,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:45,240 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 06:49:45,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 06:49:45,324 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 06:49:45,324 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818380617]
[2023-12-21 06:49:45,324 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-21 06:49:45,325 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189692899]
[2023-12-21 06:49:45,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:45,325 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 06:49:45,325 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 06:49:45,327 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-21 06:49:45,334 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-21 06:49:45,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 06:49:45,371 INFO  L262         TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-21 06:49:45,373 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 06:49:45,387 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-21 06:49:45,388 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 06:49:45,388 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [189692899] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 06:49:45,388 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 06:49:45,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-21 06:49:45,390 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601182186]
[2023-12-21 06:49:45,390 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 06:49:45,393 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-21 06:49:45,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 06:49:45,412 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-21 06:49:45,413 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 06:49:45,414 INFO  L87              Difference]: Start difference. First operand  has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 06:49:45,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 06:49:45,446 INFO  L93              Difference]: Finished difference Result 42 states and 57 transitions.
[2023-12-21 06:49:45,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-21 06:49:45,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18
[2023-12-21 06:49:45,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 06:49:45,453 INFO  L225             Difference]: With dead ends: 42
[2023-12-21 06:49:45,453 INFO  L226             Difference]: Without dead ends: 20
[2023-12-21 06:49:45,456 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 06:49:45,460 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 06:49:45,462 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 06:49:45,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-12-21 06:49:45,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2023-12-21 06:49:45,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-12-21 06:49:45,490 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2023-12-21 06:49:45,491 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18
[2023-12-21 06:49:45,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 06:49:45,491 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2023-12-21 06:49:45,492 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 06:49:45,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2023-12-21 06:49:45,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2023-12-21 06:49:45,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 06:49:45,494 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 06:49:45,515 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-21 06:49:45,699 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-12-21 06:49:45,700 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 06:49:45,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 06:49:45,701 INFO  L85        PathProgramCache]: Analyzing trace with hash 285318314, now seen corresponding path program 1 times
[2023-12-21 06:49:45,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 06:49:45,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300639830]
[2023-12-21 06:49:45,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:45,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 06:49:45,728 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 06:49:45,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557420640]
[2023-12-21 06:49:45,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:45,728 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 06:49:45,729 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 06:49:45,734 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-21 06:49:45,767 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-21 06:49:45,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 06:49:45,785 INFO  L262         TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-21 06:49:45,788 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 06:49:45,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-21 06:49:45,879 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 06:49:45,879 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 06:49:45,879 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300639830]
[2023-12-21 06:49:45,879 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-21 06:49:45,879 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557420640]
[2023-12-21 06:49:45,880 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557420640] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 06:49:45,880 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 06:49:45,880 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-21 06:49:45,880 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384042092]
[2023-12-21 06:49:45,880 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 06:49:45,881 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-21 06:49:45,881 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 06:49:45,882 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-21 06:49:45,882 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-21 06:49:45,882 INFO  L87              Difference]: Start difference. First operand 20 states and 22 transitions. Second operand  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-21 06:49:45,953 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 06:49:45,953 INFO  L93              Difference]: Finished difference Result 30 states and 33 transitions.
[2023-12-21 06:49:45,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-21 06:49:45,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2023-12-21 06:49:45,954 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 06:49:45,955 INFO  L225             Difference]: With dead ends: 30
[2023-12-21 06:49:45,956 INFO  L226             Difference]: Without dead ends: 28
[2023-12-21 06:49:45,957 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-12-21 06:49:45,960 INFO  L413           NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 06:49:45,960 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 06:49:45,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-12-21 06:49:45,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26.
[2023-12-21 06:49:45,971 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2023-12-21 06:49:45,972 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions.
[2023-12-21 06:49:45,972 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18
[2023-12-21 06:49:45,974 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 06:49:45,974 INFO  L495      AbstractCegarLoop]: Abstraction has 26 states and 28 transitions.
[2023-12-21 06:49:45,974 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-21 06:49:45,975 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions.
[2023-12-21 06:49:45,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2023-12-21 06:49:45,975 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 06:49:45,975 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 06:49:45,981 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-21 06:49:46,182 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2023-12-21 06:49:46,182 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 06:49:46,183 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 06:49:46,184 INFO  L85        PathProgramCache]: Analyzing trace with hash -1697127868, now seen corresponding path program 1 times
[2023-12-21 06:49:46,184 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 06:49:46,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346141443]
[2023-12-21 06:49:46,185 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:46,185 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 06:49:46,210 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 06:49:46,210 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291624015]
[2023-12-21 06:49:46,210 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 06:49:46,211 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 06:49:46,211 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 06:49:46,222 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-21 06:49:46,249 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-21 06:49:46,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 06:49:46,268 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-21 06:49:46,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 06:49:46,287 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-12-21 06:49:46,287 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-12-21 06:49:46,288 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-21 06:49:46,297 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-21 06:49:46,490 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 06:49:46,493 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-12-21 06:49:46,495 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-21 06:49:46,516 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:49:46 BoogieIcfgContainer
[2023-12-21 06:49:46,517 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-21 06:49:46,521 INFO  L158              Benchmark]: Toolchain (without parser) took 1866.80ms. Allocated memory is still 342.9MB. Free memory was 291.5MB in the beginning and 212.9MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,523 INFO  L158              Benchmark]: CDTParser took 0.57ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-21 06:49:46,523 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 155.50ms. Allocated memory is still 342.9MB. Free memory was 291.5MB in the beginning and 280.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,524 INFO  L158              Benchmark]: Boogie Procedure Inliner took 28.47ms. Allocated memory is still 342.9MB. Free memory was 280.5MB in the beginning and 278.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,524 INFO  L158              Benchmark]: Boogie Preprocessor took 38.02ms. Allocated memory is still 342.9MB. Free memory was 278.9MB in the beginning and 277.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,524 INFO  L158              Benchmark]: RCFGBuilder took 264.03ms. Allocated memory is still 342.9MB. Free memory was 277.4MB in the beginning and 265.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,526 INFO  L158              Benchmark]: TraceAbstraction took 1353.07ms. Allocated memory is still 342.9MB. Free memory was 264.8MB in the beginning and 212.9MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB.
[2023-12-21 06:49:46,527 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.57ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 155.50ms. Allocated memory is still 342.9MB. Free memory was 291.5MB in the beginning and 280.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 28.47ms. Allocated memory is still 342.9MB. Free memory was 280.5MB in the beginning and 278.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 38.02ms. Allocated memory is still 342.9MB. Free memory was 278.9MB in the beginning and 277.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 264.03ms. Allocated memory is still 342.9MB. Free memory was 277.4MB in the beginning and 265.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
 * TraceAbstraction took 1353.07ms. Allocated memory is still 342.9MB. Free memory was 264.8MB in the beginning and 212.9MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 18]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L23]              unsigned int z, k;
[L24]              unsigned long long x, y, c;
[L25]              z = __VERIFIER_nondet_uint()
[L26]  CALL        assume_abort_if_not(z>=0 && z<=20)
       VAL         [\old(cond)=1]
[L13]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1]
[L26]  RET         assume_abort_if_not(z>=0 && z<=20)
       VAL         [z=4294967296]
[L27]              k = __VERIFIER_nondet_uint()
[L28]  CALL        assume_abort_if_not(k>=0 && k<=20)
       VAL         [\old(cond)=1]
[L13]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1]
[L28]  RET         assume_abort_if_not(k>=0 && k<=20)
       VAL         [k=0, z=4294967296]
[L30]              x = 1
[L31]              y = z
[L32]              c = 1
       VAL         [c=1, k=0, x=1, y=0, z=4294967296]
[L34]  COND TRUE   1
       VAL         [c=1, k=0, x=1, y=0, z=4294967296]
[L35]  CALL        __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [\old(cond)=1]
[L16]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1]
[L35]  RET         __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [c=1, k=0, x=1, y=0, z=4294967296]
[L37]  COND TRUE   !(c < k)
       VAL         [c=1, k=0, x=1, y=0, z=4294967296]
[L46]              x = x * (z - 1)
       VAL         [c=1, k=0, x=4294967295, y=0, z=4294967296]
[L48]  CALL        __VERIFIER_assert(1 + x - y == 0)
       VAL         [\old(cond)=0]
[L16]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L18]              reach_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 35 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 3 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2023-12-21 06:49:46,541 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...