/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-19 20:09:08,674 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-19 20:09:08,739 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-19 20:09:08,742 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-19 20:09:08,742 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-19 20:09:08,754 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-19 20:09:08,755 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-19 20:09:08,755 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-19 20:09:08,756 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-19 20:09:08,759 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-19 20:09:08,759 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-19 20:09:08,759 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-19 20:09:08,760 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-19 20:09:08,761 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-19 20:09:08,761 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-19 20:09:08,762 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-19 20:09:08,762 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-19 20:09:08,762 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-19 20:09:08,762 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-19 20:09:08,762 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-19 20:09:08,763 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-19 20:09:08,763 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-19 20:09:08,763 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-19 20:09:08,763 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-19 20:09:08,763 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-19 20:09:08,764 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-19 20:09:08,764 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-19 20:09:08,764 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 20:09:08,764 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-19 20:09:08,765 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-19 20:09:08,766 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-19 20:09:08,766 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-19 20:09:08,949 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-19 20:09:08,975 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-19 20:09:08,977 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-19 20:09:08,978 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-19 20:09:08,978 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-19 20:09:08,979 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c
[2023-12-19 20:09:09,983 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-19 20:09:10,105 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-19 20:09:10,105 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c
[2023-12-19 20:09:10,109 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdf0c413/e7c51b701304453eb1f5681d515d07b2/FLAG271fed13b
[2023-12-19 20:09:10,118 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdf0c413/e7c51b701304453eb1f5681d515d07b2
[2023-12-19 20:09:10,119 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-19 20:09:10,120 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-19 20:09:10,121 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-19 20:09:10,122 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-19 20:09:10,125 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-19 20:09:10,125 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,126 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65499cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10, skipping insertion in model container
[2023-12-19 20:09:10,126 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,141 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-19 20:09:10,240 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/fermat2-ll_unwindbound1.c[524,537]
[2023-12-19 20:09:10,250 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 20:09:10,255 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-19 20:09:10,264 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/fermat2-ll_unwindbound1.c[524,537]
[2023-12-19 20:09:10,269 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 20:09:10,277 INFO  L206         MainTranslator]: Completed translation
[2023-12-19 20:09:10,277 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10 WrapperNode
[2023-12-19 20:09:10,277 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-19 20:09:10,278 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-19 20:09:10,278 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-19 20:09:10,278 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-19 20:09:10,282 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,286 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,296 INFO  L138                Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47
[2023-12-19 20:09:10,296 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-19 20:09:10,297 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-19 20:09:10,297 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-19 20:09:10,297 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-19 20:09:10,303 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,303 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,304 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,310 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].
[2023-12-19 20:09:10,310 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,310 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,312 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,313 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,314 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,314 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,315 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-19 20:09:10,316 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-19 20:09:10,316 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-19 20:09:10,316 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-19 20:09:10,316 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (1/1) ...
[2023-12-19 20:09:10,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 20:09:10,326 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:10,334 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)
[2023-12-19 20:09:10,354 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
[2023-12-19 20:09:10,370 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-19 20:09:10,371 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-19 20:09:10,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-19 20:09:10,371 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-19 20:09:10,371 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-19 20:09:10,372 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-19 20:09:10,373 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-12-19 20:09:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-12-19 20:09:10,422 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-19 20:09:10,424 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-19 20:09:10,553 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-19 20:09:10,566 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-19 20:09:10,566 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-19 20:09:10,567 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:09:10 BoogieIcfgContainer
[2023-12-19 20:09:10,567 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-19 20:09:10,568 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-19 20:09:10,568 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-19 20:09:10,570 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-19 20:09:10,570 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:09:10" (1/3) ...
[2023-12-19 20:09:10,571 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39986d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:09:10, skipping insertion in model container
[2023-12-19 20:09:10,571 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:09:10" (2/3) ...
[2023-12-19 20:09:10,571 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39986d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:09:10, skipping insertion in model container
[2023-12-19 20:09:10,571 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:09:10" (3/3) ...
[2023-12-19 20:09:10,572 INFO  L112   eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound1.c
[2023-12-19 20:09:10,583 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-19 20:09:10,583 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-19 20:09:10,615 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-19 20:09:10,622 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;@3683e534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-19 20:09:10,622 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-19 20:09:10,624 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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)
[2023-12-19 20:09:10,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-12-19 20:09:10,629 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 20:09:10,629 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 20:09:10,630 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 20:09:10,633 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 20:09:10,633 INFO  L85        PathProgramCache]: Analyzing trace with hash -1060579028, now seen corresponding path program 1 times
[2023-12-19 20:09:10,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 20:09:10,639 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259387999]
[2023-12-19 20:09:10,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:10,639 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 20:09:10,690 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 20:09:10,690 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374516041]
[2023-12-19 20:09:10,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:10,691 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:10,691 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:10,693 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)
[2023-12-19 20:09:10,716 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-19 20:09:10,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 20:09:10,748 INFO  L262         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-19 20:09:10,751 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 20:09:10,774 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-19 20:09:10,775 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 20:09:10,775 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 20:09:10,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259387999]
[2023-12-19 20:09:10,775 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 20:09:10,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374516041]
[2023-12-19 20:09:10,776 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374516041] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 20:09:10,776 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 20:09:10,776 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 20:09:10,778 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353380087]
[2023-12-19 20:09:10,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 20:09:10,783 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-19 20:09:10,783 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 20:09:10,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-19 20:09:10,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 20:09:10,812 INFO  L87              Difference]: Start difference. First operand  has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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)
[2023-12-19 20:09:10,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 20:09:10,841 INFO  L93              Difference]: Finished difference Result 42 states and 59 transitions.
[2023-12-19 20:09:10,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-19 20:09:10,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 17
[2023-12-19 20:09:10,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 20:09:10,849 INFO  L225             Difference]: With dead ends: 42
[2023-12-19 20:09:10,849 INFO  L226             Difference]: Without dead ends: 20
[2023-12-19 20:09:10,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 20:09:10,855 INFO  L413           NwaCegarLoop]: 24 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, 24 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
[2023-12-19 20:09:10,856 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 20:09:10,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-12-19 20:09:10,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2023-12-19 20:09:10,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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)
[2023-12-19 20:09:10,884 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2023-12-19 20:09:10,886 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17
[2023-12-19 20:09:10,886 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 20:09:10,886 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2023-12-19 20:09:10,886 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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)
[2023-12-19 20:09:10,887 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2023-12-19 20:09:10,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2023-12-19 20:09:10,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 20:09:10,889 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 20:09:10,897 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-19 20:09:11,094 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
[2023-12-19 20:09:11,094 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 20:09:11,095 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 20:09:11,095 INFO  L85        PathProgramCache]: Analyzing trace with hash -778881514, now seen corresponding path program 1 times
[2023-12-19 20:09:11,095 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 20:09:11,095 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498930694]
[2023-12-19 20:09:11,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:11,095 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 20:09:11,109 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 20:09:11,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948508438]
[2023-12-19 20:09:11,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:11,109 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:11,110 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:11,111 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)
[2023-12-19 20:09:11,117 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-19 20:09:11,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 20:09:11,183 INFO  L262         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-19 20:09:11,184 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 20:09:11,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-19 20:09:11,243 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 20:09:11,243 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 20:09:11,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498930694]
[2023-12-19 20:09:11,243 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 20:09:11,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948508438]
[2023-12-19 20:09:11,244 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [948508438] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 20:09:11,244 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 20:09:11,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-19 20:09:11,245 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458505960]
[2023-12-19 20:09:11,245 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 20:09:11,245 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-19 20:09:11,246 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 20:09:11,246 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-19 20:09:11,246 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-19 20:09:11,246 INFO  L87              Difference]: Start difference. First operand 20 states and 24 transitions. Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-19 20:09:11,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 20:09:11,263 INFO  L93              Difference]: Finished difference Result 29 states and 33 transitions.
[2023-12-19 20:09:11,263 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-19 20:09:11,263 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2023-12-19 20:09:11,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 20:09:11,265 INFO  L225             Difference]: With dead ends: 29
[2023-12-19 20:09:11,265 INFO  L226             Difference]: Without dead ends: 22
[2023-12-19 20:09:11,266 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-19 20:09:11,270 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-19 20:09:11,273 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 20:09:11,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-12-19 20:09:11,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2023-12-19 20:09:11,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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)
[2023-12-19 20:09:11,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2023-12-19 20:09:11,277 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 18
[2023-12-19 20:09:11,278 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 20:09:11,278 INFO  L495      AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2023-12-19 20:09:11,278 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-19 20:09:11,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2023-12-19 20:09:11,278 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2023-12-19 20:09:11,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 20:09:11,279 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 20:09:11,283 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-19 20:09:11,481 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
[2023-12-19 20:09:11,496 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 20:09:11,498 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 20:09:11,498 INFO  L85        PathProgramCache]: Analyzing trace with hash -777094054, now seen corresponding path program 1 times
[2023-12-19 20:09:11,498 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 20:09:11,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230520773]
[2023-12-19 20:09:11,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:11,500 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 20:09:11,510 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 20:09:11,511 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624068494]
[2023-12-19 20:09:11,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:11,511 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:11,511 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:11,515 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)
[2023-12-19 20:09:11,542 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-19 20:09:11,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 20:09:11,547 INFO  L262         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-19 20:09:11,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 20:09:11,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-19 20:09:11,731 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 20:09:11,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 20:09:11,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230520773]
[2023-12-19 20:09:11,732 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 20:09:11,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624068494]
[2023-12-19 20:09:11,732 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624068494] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 20:09:11,732 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 20:09:11,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-19 20:09:11,732 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938366986]
[2023-12-19 20:09:11,732 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 20:09:11,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-19 20:09:11,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 20:09:11,733 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-19 20:09:11,733 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-19 20:09:11,733 INFO  L87              Difference]: Start difference. First operand 22 states and 26 transitions. Second operand  has 8 states, 8 states have (on average 1.625) 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), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-19 20:09:12,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 20:09:12,331 INFO  L93              Difference]: Finished difference Result 34 states and 41 transitions.
[2023-12-19 20:09:12,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-19 20:09:12,332 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.625) 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), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2023-12-19 20:09:12,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 20:09:12,333 INFO  L225             Difference]: With dead ends: 34
[2023-12-19 20:09:12,333 INFO  L226             Difference]: Without dead ends: 32
[2023-12-19 20:09:12,333 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-12-19 20:09:12,334 INFO  L413           NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-19 20:09:12,334 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-19 20:09:12,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2023-12-19 20:09:12,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31.
[2023-12-19 20:09:12,340 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-12-19 20:09:12,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions.
[2023-12-19 20:09:12,341 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18
[2023-12-19 20:09:12,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 20:09:12,341 INFO  L495      AbstractCegarLoop]: Abstraction has 31 states and 38 transitions.
[2023-12-19 20:09:12,341 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.625) 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), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-19 20:09:12,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions.
[2023-12-19 20:09:12,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2023-12-19 20:09:12,342 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 20:09:12,342 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]
[2023-12-19 20:09:12,367 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-19 20:09:12,546 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
[2023-12-19 20:09:12,547 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 20:09:12,548 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 20:09:12,548 INFO  L85        PathProgramCache]: Analyzing trace with hash -331201790, now seen corresponding path program 1 times
[2023-12-19 20:09:12,548 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 20:09:12,549 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374725741]
[2023-12-19 20:09:12,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:12,549 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 20:09:12,566 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 20:09:12,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412763438]
[2023-12-19 20:09:12,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:12,566 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:12,567 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:12,581 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-19 20:09:12,581 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-19 20:09:12,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 20:09:12,625 INFO  L262         TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-19 20:09:12,627 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 20:09:12,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-19 20:09:12,718 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-19 20:09:12,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-19 20:09:12,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 20:09:12,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374725741]
[2023-12-19 20:09:12,829 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 20:09:12,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412763438]
[2023-12-19 20:09:12,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412763438] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-19 20:09:12,830 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-19 20:09:12,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11
[2023-12-19 20:09:12,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226372074]
[2023-12-19 20:09:12,830 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-19 20:09:12,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-19 20:09:12,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 20:09:12,832 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-19 20:09:12,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-19 20:09:12,833 INFO  L87              Difference]: Start difference. First operand 31 states and 38 transitions. Second operand  has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4)
[2023-12-19 20:09:12,926 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 20:09:12,926 INFO  L93              Difference]: Finished difference Result 38 states and 44 transitions.
[2023-12-19 20:09:12,927 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-19 20:09:12,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24
[2023-12-19 20:09:12,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 20:09:12,928 INFO  L225             Difference]: With dead ends: 38
[2023-12-19 20:09:12,929 INFO  L226             Difference]: Without dead ends: 33
[2023-12-19 20:09:12,929 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2023-12-19 20:09:12,932 INFO  L413           NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-19 20:09:12,933 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 20:09:12,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2023-12-19 20:09:12,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2023-12-19 20:09:12,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-12-19 20:09:12,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2023-12-19 20:09:12,944 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 24
[2023-12-19 20:09:12,945 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 20:09:12,945 INFO  L495      AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2023-12-19 20:09:12,945 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4)
[2023-12-19 20:09:12,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2023-12-19 20:09:12,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-12-19 20:09:12,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 20:09:12,946 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 20:09:12,965 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-19 20:09:13,151 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:13,152 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 20:09:13,152 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 20:09:13,153 INFO  L85        PathProgramCache]: Analyzing trace with hash -1584280999, now seen corresponding path program 1 times
[2023-12-19 20:09:13,153 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 20:09:13,153 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273479695]
[2023-12-19 20:09:13,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:13,153 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 20:09:13,159 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 20:09:13,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733171632]
[2023-12-19 20:09:13,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 20:09:13,159 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:13,159 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 20:09:13,160 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-19 20:09:13,188 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-19 20:09:13,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-19 20:09:13,210 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-19 20:09:13,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-19 20:09:13,233 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-12-19 20:09:13,233 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-12-19 20:09:13,234 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-19 20:09:13,244 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-19 20:09:13,435 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 20:09:13,438 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2023-12-19 20:09:13,442 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-19 20:09:13,458 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:09:13 BoogieIcfgContainer
[2023-12-19 20:09:13,459 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-19 20:09:13,459 INFO  L158              Benchmark]: Toolchain (without parser) took 3338.87ms. Allocated memory was 215.0MB in the beginning and 262.1MB in the end (delta: 47.2MB). Free memory was 153.2MB in the beginning and 191.5MB in the end (delta: -38.3MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,459 INFO  L158              Benchmark]: CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 164.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-19 20:09:13,459 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 156.64ms. Allocated memory is still 215.0MB. Free memory was 153.0MB in the beginning and 142.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,460 INFO  L158              Benchmark]: Boogie Procedure Inliner took 18.36ms. Allocated memory is still 215.0MB. Free memory was 142.0MB in the beginning and 140.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,460 INFO  L158              Benchmark]: Boogie Preprocessor took 18.53ms. Allocated memory is still 215.0MB. Free memory was 140.4MB in the beginning and 138.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,460 INFO  L158              Benchmark]: RCFGBuilder took 251.32ms. Allocated memory is still 215.0MB. Free memory was 138.6MB in the beginning and 178.8MB in the end (delta: -40.2MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,460 INFO  L158              Benchmark]: TraceAbstraction took 2890.34ms. Allocated memory was 215.0MB in the beginning and 262.1MB in the end (delta: 47.2MB). Free memory was 177.7MB in the beginning and 191.5MB in the end (delta: -13.8MB). Peak memory consumption was 33.4MB. Max. memory is 8.0GB.
[2023-12-19 20:09:13,461 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 164.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 156.64ms. Allocated memory is still 215.0MB. Free memory was 153.0MB in the beginning and 142.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 18.36ms. Allocated memory is still 215.0MB. Free memory was 142.0MB in the beginning and 140.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 18.53ms. Allocated memory is still 215.0MB. Free memory was 140.4MB in the beginning and 138.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 251.32ms. Allocated memory is still 215.0MB. Free memory was 138.6MB in the beginning and 178.8MB in the end (delta: -40.2MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB.
 * TraceAbstraction took 2890.34ms. Allocated memory was 215.0MB in the beginning and 262.1MB in the end (delta: 47.2MB). Free memory was 177.7MB in the beginning and 191.5MB in the end (delta: -13.8MB). Peak memory consumption was 33.4MB. 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: 14]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L19]              int counter = 0;
[L21]              int A, R;
[L22]              long long u, v, r;
[L23]              A = __VERIFIER_nondet_int()
[L24]              R = __VERIFIER_nondet_int()
[L26]  CALL        assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
       VAL         [\old(cond)=1, counter=0]
[L9]   COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1, counter=0]
[L26]  RET         assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A)
       VAL         [A=27, R=6, counter=0]
[L28]  CALL        assume_abort_if_not(A % 2 == 1)
       VAL         [\old(cond)=1, counter=0]
[L9]   COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1, counter=0]
[L28]  RET         assume_abort_if_not(A % 2 == 1)
       VAL         [A=27, R=6, counter=0]
[L30]              u = ((long long) 2 * R) + 1
[L31]              v = 1
[L32]              r = ((long long) R * R) - A
       VAL         [A=27, R=6, counter=0, r=9, u=13, v=1]
[L34]  EXPR        counter++
       VAL         [A=27, R=6, counter=1, r=9, u=13, v=1]
[L34]  COND TRUE   counter++<1
[L35]  CALL        __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
       VAL         [\old(cond)=1, counter=1]
[L12]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1, counter=1]
[L35]  RET         __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v)
       VAL         [A=27, R=6, counter=1, r=9, u=13, v=1]
[L36]  COND FALSE  !(!(r != 0))
       VAL         [A=27, R=6, counter=1, r=9, u=13, v=1]
[L38]  COND TRUE   r > 0
[L39]              r = r - v
[L40]              v = v + 2
       VAL         [A=27, R=6, counter=1, r=8, u=13, v=3]
[L34]  EXPR        counter++
       VAL         [A=27, R=6, counter=2, r=8, u=13, v=3]
[L34]  COND FALSE  !(counter++<1)
[L48]  CALL        __VERIFIER_assert(((long long) 4*A) == u*u - v*v  - 2*u + 2*v)
       VAL         [\old(cond)=0, counter=2]
[L12]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0, counter=2]
[L14]              reach_error()
       VAL         [\old(cond)=0, cond=0, counter=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 244 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 73 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 22, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 6 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 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!
[2023-12-19 20:09:13,490 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...