/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/geo1-u.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-21 05:29:07,896 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-21 05:29:07,958 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 05:29:07,961 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-21 05:29:07,961 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-21 05:29:07,987 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-21 05:29:07,987 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-21 05:29:07,988 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-21 05:29:07,988 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-21 05:29:07,991 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-21 05:29:07,991 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-21 05:29:07,992 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-21 05:29:07,992 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-21 05:29:07,993 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-21 05:29:07,993 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-21 05:29:07,993 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-21 05:29:07,993 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-21 05:29:07,994 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-21 05:29:07,995 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-21 05:29:07,995 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-21 05:29:07,995 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-21 05:29:07,995 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-21 05:29:07,995 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-21 05:29:07,996 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-21 05:29:07,996 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-21 05:29:07,996 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-21 05:29:07,996 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 05:29:07,997 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-21 05:29:07,997 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-21 05:29:07,998 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-21 05:29:07,998 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-21 05:29:07,998 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-21 05:29:08,193 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-21 05:29:08,213 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-21 05:29:08,214 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-21 05:29:08,215 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-21 05:29:08,215 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-21 05:29:08,216 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1-u.c
[2023-12-21 05:29:09,205 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-21 05:29:09,359 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-21 05:29:09,360 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1-u.c
[2023-12-21 05:29:09,364 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f061cdd9/23abe4d0457049629bdf5052ff80a4b4/FLAG56d447813
[2023-12-21 05:29:09,373 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f061cdd9/23abe4d0457049629bdf5052ff80a4b4
[2023-12-21 05:29:09,375 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-21 05:29:09,376 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-21 05:29:09,376 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-21 05:29:09,377 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-21 05:29:09,380 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-21 05:29:09,380 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,381 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2710986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09, skipping insertion in model container
[2023-12-21 05:29:09,381 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,398 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-21 05:29:09,486 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/geo1-u.c[555,568]
[2023-12-21 05:29:09,495 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 05:29:09,501 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-21 05:29:09,508 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/geo1-u.c[555,568]
[2023-12-21 05:29:09,516 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 05:29:09,528 INFO  L206         MainTranslator]: Completed translation
[2023-12-21 05:29:09,529 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09 WrapperNode
[2023-12-21 05:29:09,529 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-21 05:29:09,530 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-21 05:29:09,530 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-21 05:29:09,530 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-21 05:29:09,535 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,540 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,562 INFO  L138                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37
[2023-12-21 05:29:09,563 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-21 05:29:09,563 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-21 05:29:09,563 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-21 05:29:09,563 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-21 05:29:09,569 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,570 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,571 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,578 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 05:29:09,578 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,578 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,579 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,581 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,582 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,583 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,584 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-21 05:29:09,584 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-21 05:29:09,584 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-21 05:29:09,584 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-21 05:29:09,585 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (1/1) ...
[2023-12-21 05:29:09,589 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 05:29:09,598 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 05:29:09,612 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 05:29:09,620 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 05:29:09,636 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-21 05:29:09,636 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-21 05:29:09,637 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-21 05:29:09,637 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-21 05:29:09,637 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-12-21 05:29:09,637 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-12-21 05:29:09,684 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-21 05:29:09,688 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-21 05:29:09,814 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-21 05:29:09,831 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-21 05:29:09,831 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-21 05:29:09,832 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:29:09 BoogieIcfgContainer
[2023-12-21 05:29:09,832 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-21 05:29:09,833 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-21 05:29:09,833 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-21 05:29:09,835 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-21 05:29:09,836 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:29:09" (1/3) ...
[2023-12-21 05:29:09,836 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6c8eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:29:09, skipping insertion in model container
[2023-12-21 05:29:09,836 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:29:09" (2/3) ...
[2023-12-21 05:29:09,836 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6c8eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:29:09, skipping insertion in model container
[2023-12-21 05:29:09,837 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:29:09" (3/3) ...
[2023-12-21 05:29:09,837 INFO  L112   eAbstractionObserver]: Analyzing ICFG geo1-u.c
[2023-12-21 05:29:09,873 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-21 05:29:09,873 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-21 05:29:09,901 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-21 05:29:09,906 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;@71a16478, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-21 05:29:09,906 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-21 05:29:09,909 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 05:29:09,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2023-12-21 05:29:09,913 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 05:29:09,913 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-12-21 05:29:09,914 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 05:29:09,917 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 05:29:09,917 INFO  L85        PathProgramCache]: Analyzing trace with hash 2129874872, now seen corresponding path program 1 times
[2023-12-21 05:29:09,923 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 05:29:09,923 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113918818]
[2023-12-21 05:29:09,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:29:09,924 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 05:29:09,979 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 05:29:09,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012778123]
[2023-12-21 05:29:09,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:29:09,980 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 05:29:09,980 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 05:29:09,982 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 05:29:10,000 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 05:29:10,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 05:29:10,034 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-21 05:29:10,037 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 05:29:10,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 05:29:10,133 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 05:29:10,133 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 05:29:10,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113918818]
[2023-12-21 05:29:10,133 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-21 05:29:10,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012778123]
[2023-12-21 05:29:10,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012778123] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 05:29:10,134 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 05:29:10,134 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-21 05:29:10,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657992183]
[2023-12-21 05:29:10,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 05:29:10,138 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-21 05:29:10,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 05:29:10,154 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-21 05:29:10,154 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-21 05:29:10,155 INFO  L87              Difference]: Start difference. First operand  has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 05:29:10,202 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 05:29:10,202 INFO  L93              Difference]: Finished difference Result 35 states and 50 transitions.
[2023-12-21 05:29:10,203 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-21 05:29:10,204 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2023-12-21 05:29:10,204 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 05:29:10,211 INFO  L225             Difference]: With dead ends: 35
[2023-12-21 05:29:10,211 INFO  L226             Difference]: Without dead ends: 20
[2023-12-21 05:29:10,212 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-21 05:29:10,215 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 05:29:10,215 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 05:29:10,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-12-21 05:29:10,234 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18.
[2023-12-21 05:29:10,235 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 05:29:10,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2023-12-21 05:29:10,237 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6
[2023-12-21 05:29:10,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 05:29:10,238 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2023-12-21 05:29:10,238 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 05:29:10,238 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2023-12-21 05:29:10,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-12-21 05:29:10,238 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 05:29:10,238 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 05:29:10,246 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-21 05:29:10,439 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 05:29:10,439 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 05:29:10,440 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 05:29:10,440 INFO  L85        PathProgramCache]: Analyzing trace with hash -1713621024, now seen corresponding path program 1 times
[2023-12-21 05:29:10,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 05:29:10,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460299080]
[2023-12-21 05:29:10,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:29:10,440 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 05:29:10,448 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 05:29:10,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906032368]
[2023-12-21 05:29:10,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:29:10,448 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 05:29:10,449 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 05:29:10,454 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 05:29:10,455 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 05:29:11,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 05:29:11,092 INFO  L262         TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-21 05:29:11,094 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 05:29:11,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 05:29:11,192 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-21 05:29:28,192 WARN  L876   $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296))) (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 .cse0) .cse0 (* |c_ULTIMATE.start_main_~x~0#1| .cse0 .cse0) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| .cse0)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) (* |c_ULTIMATE.start_main_~x~0#1| .cse0) 1) 18446744073709551616) 0)))) is different from true
[2023-12-21 05:29:36,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked.
[2023-12-21 05:29:36,740 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 05:29:36,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460299080]
[2023-12-21 05:29:36,740 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-21 05:29:36,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906032368]
[2023-12-21 05:29:36,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906032368] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-21 05:29:36,741 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-21 05:29:36,741 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2023-12-21 05:29:36,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577688005]
[2023-12-21 05:29:36,741 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-21 05:29:36,742 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-21 05:29:36,742 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 05:29:36,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-21 05:29:36,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=102, Unknown=2, NotChecked=20, Total=156
[2023-12-21 05:29:36,743 INFO  L87              Difference]: Start difference. First operand 18 states and 19 transitions. Second operand  has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 05:29:42,972 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:29:47,191 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:29:51,196 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:29:55,223 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:29:59,230 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:30:03,235 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:30:07,241 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:30:11,260 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2023-12-21 05:30:11,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 05:30:11,264 INFO  L93              Difference]: Finished difference Result 36 states and 42 transitions.
[2023-12-21 05:30:11,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-21 05:30:11,265 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13
[2023-12-21 05:30:11,265 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 05:30:11,266 INFO  L225             Difference]: With dead ends: 36
[2023-12-21 05:30:11,266 INFO  L226             Difference]: Without dead ends: 34
[2023-12-21 05:30:11,267 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=53, Invalid=159, Unknown=2, NotChecked=26, Total=240
[2023-12-21 05:30:11,268 INFO  L413           NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time
[2023-12-21 05:30:11,268 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 63 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 7 Unknown, 35 Unchecked, 30.1s Time]
[2023-12-21 05:30:11,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2023-12-21 05:30:11,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31.
[2023-12-21 05:30:11,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2023-12-21 05:30:11,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions.
[2023-12-21 05:30:11,278 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 13
[2023-12-21 05:30:11,278 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 05:30:11,278 INFO  L495      AbstractCegarLoop]: Abstraction has 31 states and 37 transitions.
[2023-12-21 05:30:11,278 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-21 05:30:11,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions.
[2023-12-21 05:30:11,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-12-21 05:30:11,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 05:30:11,279 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 05:30:11,291 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-21 05:30:11,480 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 05:30:11,480 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 05:30:11,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 05:30:11,482 INFO  L85        PathProgramCache]: Analyzing trace with hash -1761584534, now seen corresponding path program 1 times
[2023-12-21 05:30:11,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 05:30:11,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756243827]
[2023-12-21 05:30:11,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:30:11,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 05:30:11,488 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 05:30:11,488 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471031849]
[2023-12-21 05:30:11,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 05:30:11,488 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 05:30:11,488 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 05:30:11,494 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 05:30:11,537 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 05:30:11,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 05:30:11,559 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-21 05:30:11,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 05:30:11,585 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-12-21 05:30:11,585 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-12-21 05:30:11,586 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-21 05:30:11,601 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 05:30:11,787 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 05:30:11,790 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-12-21 05:30:11,792 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-21 05:30:11,805 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:30:11 BoogieIcfgContainer
[2023-12-21 05:30:11,805 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-21 05:30:11,806 INFO  L158              Benchmark]: Toolchain (without parser) took 62429.77ms. Allocated memory is still 197.1MB. Free memory was 142.4MB in the beginning and 77.8MB in the end (delta: 64.7MB). Peak memory consumption was 65.5MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,806 INFO  L158              Benchmark]: CDTParser took 0.08ms. Allocated memory is still 197.1MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-21 05:30:11,806 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 152.54ms. Allocated memory is still 197.1MB. Free memory was 142.2MB in the beginning and 131.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,806 INFO  L158              Benchmark]: Boogie Procedure Inliner took 32.72ms. Allocated memory is still 197.1MB. Free memory was 131.2MB in the beginning and 129.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,807 INFO  L158              Benchmark]: Boogie Preprocessor took 20.64ms. Allocated memory is still 197.1MB. Free memory was 129.9MB in the beginning and 128.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,807 INFO  L158              Benchmark]: RCFGBuilder took 247.68ms. Allocated memory is still 197.1MB. Free memory was 128.0MB in the beginning and 118.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,807 INFO  L158              Benchmark]: TraceAbstraction took 61971.84ms. Allocated memory is still 197.1MB. Free memory was 117.3MB in the beginning and 77.8MB in the end (delta: 39.5MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB.
[2023-12-21 05:30:11,809 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.08ms. Allocated memory is still 197.1MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 152.54ms. Allocated memory is still 197.1MB. Free memory was 142.2MB in the beginning and 131.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 32.72ms. Allocated memory is still 197.1MB. Free memory was 131.2MB in the beginning and 129.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 20.64ms. Allocated memory is still 197.1MB. Free memory was 129.9MB in the beginning and 128.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 247.68ms. Allocated memory is still 197.1MB. Free memory was 128.0MB in the beginning and 118.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 61971.84ms. Allocated memory is still 197.1MB. Free memory was 117.3MB in the beginning and 77.8MB in the end (delta: 39.5MB). Peak memory consumption was 40.3MB. 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]              k = __VERIFIER_nondet_uint()
[L28]              x = 1
[L29]              y = z
[L30]              c = 1
       VAL         [c=1, x=1, y=0, z=0]
[L32]  COND TRUE   1
       VAL         [c=1, x=1, y=0, z=0]
[L33]  CALL        __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [\old(cond)=1]
[L16]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1]
[L33]  RET         __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [c=1, x=1, y=0, z=0]
[L35]  COND TRUE   !(c < k)
       VAL         [c=1, k=0, x=1, y=0, z=0]
[L44]              x = x * (z - 1)
       VAL         [c=1, k=0, x=4294967295, y=0, z=0]
[L46]  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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 30.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 30.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 35 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 17 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 25.7s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 3 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 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 05:30:11,836 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...