This is Ultimate 0.2.4-dev-1d5fa63-m
[2024-09-13 10:14:57,966 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-13 10:14:58,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-13 10:14:58,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-13 10:14:58,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-13 10:14:58,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-13 10:14:58,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-13 10:14:58,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-13 10:14:58,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-13 10:14:58,087 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-13 10:14:58,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-13 10:14:58,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-13 10:14:58,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-13 10:14:58,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-13 10:14:58,088 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-13 10:14:58,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-13 10:14:58,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-13 10:14:58,090 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-13 10:14:58,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-13 10:14:58,093 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-13 10:14:58,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-13 10:14:58,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-13 10:14:58,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-13 10:14:58,094 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-13 10:14:58,095 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-13 10:14:58,095 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-13 10:14:58,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-13 10:14:58,095 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-13 10:14:58,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-13 10:14:58,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-13 10:14:58,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-13 10:14:58,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-13 10:14:58,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 10:14:58,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-13 10:14:58,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-13 10:14:58,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-13 10:14:58,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-13 10:14:58,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-13 10:14:58,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-13 10:14:58,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-13 10:14:58,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-13 10:14:58,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-13 10:14:58,101 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/certificate-witnesses-artifact/automizer/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None
[2024-09-13 10:14:58,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-13 10:14:58,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-13 10:14:58,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-13 10:14:58,388 INFO L270 PluginConnector]: Initializing Witness Parser...
[2024-09-13 10:14:58,389 INFO L274 PluginConnector]: Witness Parser initialized
[2024-09-13 10:14:58,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/ps6-ll.yml/witness-2.1.yml
[2024-09-13 10:14:58,438 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-13 10:14:58,438 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-13 10:14:58,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/ps6-ll.c
[2024-09-13 10:14:59,907 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-13 10:15:00,085 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-13 10:15:00,085 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps6-ll.c
[2024-09-13 10:15:00,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9d4f88b69/7a240bcf52f04a389e6cdd71b2c2f1c0/FLAG44010f81f
[2024-09-13 10:15:00,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9d4f88b69/7a240bcf52f04a389e6cdd71b2c2f1c0
[2024-09-13 10:15:00,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-13 10:15:00,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2024-09-13 10:15:00,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-13 10:15:00,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-13 10:15:00,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-13 10:15:00,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:58" (1/2) ...
[2024-09-13 10:15:00,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de48c05 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:00, skipping insertion in model container
[2024-09-13 10:15:00,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:58" (1/2) ...
[2024-09-13 10:15:00,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54b128ee and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:00, skipping insertion in model container
[2024-09-13 10:15:00,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:00" (2/2) ...
[2024-09-13 10:15:00,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de48c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00, skipping insertion in model container
[2024-09-13 10:15:00,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:00" (2/2) ...
[2024-09-13 10:15:00,487 INFO L93 nessWitnessExtractor]: Found the following entries in the witness:
[2024-09-13 10:15:00,487 INFO L1541 ArrayList]: Loop invariant at [L27-L36] (((((k <= 256) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && ((((__int128) 5 * c) + ((__int128) c * y)) == (((__int128) 5 * y) + ((__int128) y * y)))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y))))
[2024-09-13 10:15:00,487 INFO L1541 ArrayList]: Function contract at [L9]: requires (1 <= \old(cond)), ensures (1 <= \old(cond))
[2024-09-13 10:15:00,487 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (\old(cond) != 0)
[2024-09-13 10:15:00,503 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-13 10:15:00,668 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps6-ll.c[458,471]
[2024-09-13 10:15:00,695 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-13 10:15:00,703 INFO L200 MainTranslator]: Completed pre-run
Start Parsing Global
Start Parsing Global
Start Parsing Global
[2024-09-13 10:15:00,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps6-ll.c[458,471]
Start Parsing Local
[2024-09-13 10:15:00,763 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-13 10:15:00,787 INFO L204 MainTranslator]: Completed translation
[2024-09-13 10:15:00,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00 WrapperNode
[2024-09-13 10:15:00,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-13 10:15:00,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-13 10:15:00,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-13 10:15:00,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-13 10:15:00,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,820 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38
[2024-09-13 10:15:00,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-13 10:15:00,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-13 10:15:00,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-13 10:15:00,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-13 10:15:00,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,854 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification
[2024-09-13 10:15:00,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-13 10:15:00,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-13 10:15:00,875 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-13 10:15:00,876 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-13 10:15:00,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (1/1) ...
[2024-09-13 10:15:00,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 10:15:00,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:15:00,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-09-13 10:15:00,908 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-09-13 10:15:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-13 10:15:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2024-09-13 10:15:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-13 10:15:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-13 10:15:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-13 10:15:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-13 10:15:01,020 INFO L242 CfgBuilder]: Building ICFG
[2024-09-13 10:15:01,023 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-13 10:15:01,198 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2024-09-13 10:15:01,235 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live.
[2024-09-13 10:15:01,235 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-13 10:15:01,255 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-13 10:15:01,255 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-13 10:15:01,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:15:01 BoogieIcfgContainer
[2024-09-13 10:15:01,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-13 10:15:01,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-13 10:15:01,258 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-13 10:15:01,261 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-13 10:15:01,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:14:58" (1/4) ...
[2024-09-13 10:15:01,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bba353 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:15:01, skipping insertion in model container
[2024-09-13 10:15:01,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:15:00" (2/4) ...
[2024-09-13 10:15:01,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bba353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:15:01, skipping insertion in model container
[2024-09-13 10:15:01,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:00" (3/4) ...
[2024-09-13 10:15:01,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bba353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:15:01, skipping insertion in model container
[2024-09-13 10:15:01,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:15:01" (4/4) ...
[2024-09-13 10:15:01,268 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll.c
[2024-09-13 10:15:01,283 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-13 10:15:01,284 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations.
[2024-09-13 10:15:01,322 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-13 10:15:01,330 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@57411cab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-13 10:15:01,331 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2024-09-13 10:15:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-13 10:15:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2024-09-13 10:15:01,356 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:01,357 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1]
[2024-09-13 10:15:01,357 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:01,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 87615, now seen corresponding path program 1 times
[2024-09-13 10:15:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599129268]
[2024-09-13 10:15:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:01,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:01,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:01,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599129268]
[2024-09-13 10:15:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599129268] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:01,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:01,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 10:15:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155639025]
[2024-09-13 10:15:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:01,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-13 10:15:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-13 10:15:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-13 10:15:01,556 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:01,583 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions.
[2024-09-13 10:15:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-13 10:15:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2024-09-13 10:15:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:01,592 INFO L225 Difference]: With dead ends: 23
[2024-09-13 10:15:01,592 INFO L226 Difference]: Without dead ends: 21
[2024-09-13 10:15:01,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-13 10:15:01,596 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:01,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-09-13 10:15:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2024-09-13 10:15:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-13 10:15:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions.
[2024-09-13 10:15:01,623 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 3
[2024-09-13 10:15:01,623 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:01,623 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions.
[2024-09-13 10:15:01,623 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions.
[2024-09-13 10:15:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2024-09-13 10:15:01,624 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:01,624 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1]
[2024-09-13 10:15:01,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-13 10:15:01,625 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:01,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash 87677, now seen corresponding path program 1 times
[2024-09-13 10:15:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718066580]
[2024-09-13 10:15:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718066580]
[2024-09-13 10:15:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718066580] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:01,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:01,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 10:15:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51036493]
[2024-09-13 10:15:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:01,719 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 10:15:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 10:15:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:01,720 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:01,745 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions.
[2024-09-13 10:15:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-13 10:15:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2024-09-13 10:15:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:01,747 INFO L225 Difference]: With dead ends: 20
[2024-09-13 10:15:01,748 INFO L226 Difference]: Without dead ends: 20
[2024-09-13 10:15:01,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:01,750 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:01,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-09-13 10:15:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2024-09-13 10:15:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-13 10:15:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2024-09-13 10:15:01,757 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 3
[2024-09-13 10:15:01,757 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:01,758 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2024-09-13 10:15:01,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2024-09-13 10:15:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2024-09-13 10:15:01,759 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:01,759 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2024-09-13 10:15:01,759 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-09-13 10:15:01,760 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2718030, now seen corresponding path program 1 times
[2024-09-13 10:15:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930255933]
[2024-09-13 10:15:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-13 10:15:01,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693818439]
[2024-09-13 10:15:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:01,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:15:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:15:01,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:15:01,807 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-13 10:15:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:01,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-09-13 10:15:01,862 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:15:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:02,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-13 10:15:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930255933]
[2024-09-13 10:15:02,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-13 10:15:02,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693818439]
[2024-09-13 10:15:02,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693818439] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:02,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:02,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 10:15:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982247891]
[2024-09-13 10:15:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:02,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 10:15:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 10:15:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:02,011 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:02,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:02,069 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions.
[2024-09-13 10:15:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-13 10:15:02,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2024-09-13 10:15:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:02,070 INFO L225 Difference]: With dead ends: 24
[2024-09-13 10:15:02,070 INFO L226 Difference]: Without dead ends: 24
[2024-09-13 10:15:02,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:02,074 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:02,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-09-13 10:15:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23.
[2024-09-13 10:15:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-13 10:15:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2024-09-13 10:15:02,079 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4
[2024-09-13 10:15:02,080 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:02,080 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2024-09-13 10:15:02,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2024-09-13 10:15:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-09-13 10:15:02,081 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:02,081 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:02,098 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-13 10:15:02,285 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:15:02,286 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:02,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1276513230, now seen corresponding path program 1 times
[2024-09-13 10:15:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:02,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870633156]
[2024-09-13 10:15:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:02,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870633156]
[2024-09-13 10:15:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870633156] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:02,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 10:15:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151377260]
[2024-09-13 10:15:02,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:02,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 10:15:02,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 10:15:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,356 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2024-09-13 10:15:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:02,375 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions.
[2024-09-13 10:15:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-13 10:15:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9
[2024-09-13 10:15:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:02,377 INFO L225 Difference]: With dead ends: 22
[2024-09-13 10:15:02,377 INFO L226 Difference]: Without dead ends: 22
[2024-09-13 10:15:02,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,379 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:02,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-09-13 10:15:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-09-13 10:15:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-13 10:15:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions.
[2024-09-13 10:15:02,383 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9
[2024-09-13 10:15:02,383 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:02,383 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions.
[2024-09-13 10:15:02,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2024-09-13 10:15:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions.
[2024-09-13 10:15:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-09-13 10:15:02,384 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:02,384 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:02,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-09-13 10:15:02,385 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:02,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1276513391, now seen corresponding path program 1 times
[2024-09-13 10:15:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997253070]
[2024-09-13 10:15:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997253070]
[2024-09-13 10:15:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997253070] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:02,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:02,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-13 10:15:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992066989]
[2024-09-13 10:15:02,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:02,472 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 10:15:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 10:15:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,473 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2024-09-13 10:15:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:02,481 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions.
[2024-09-13 10:15:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-13 10:15:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9
[2024-09-13 10:15:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:02,484 INFO L225 Difference]: With dead ends: 20
[2024-09-13 10:15:02,484 INFO L226 Difference]: Without dead ends: 20
[2024-09-13 10:15:02,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,486 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:02,489 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-09-13 10:15:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2024-09-13 10:15:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-13 10:15:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2024-09-13 10:15:02,492 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9
[2024-09-13 10:15:02,492 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:02,492 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2024-09-13 10:15:02,493 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2024-09-13 10:15:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2024-09-13 10:15:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-09-13 10:15:02,493 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:02,493 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:02,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-09-13 10:15:02,494 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:02,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash -965173204, now seen corresponding path program 1 times
[2024-09-13 10:15:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090453621]
[2024-09-13 10:15:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:02,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-13 10:15:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090453621]
[2024-09-13 10:15:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090453621] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 10:15:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534669086]
[2024-09-13 10:15:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:02,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 10:15:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 10:15:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,591 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:15:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:02,625 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions.
[2024-09-13 10:15:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-13 10:15:02,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2024-09-13 10:15:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:02,626 INFO L225 Difference]: With dead ends: 18
[2024-09-13 10:15:02,626 INFO L226 Difference]: Without dead ends: 18
[2024-09-13 10:15:02,626 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 10:15:02,627 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:02,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2024-09-13 10:15:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16.
[2024-09-13 10:15:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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)
[2024-09-13 10:15:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2024-09-13 10:15:02,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12
[2024-09-13 10:15:02,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:02,632 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2024-09-13 10:15:02,632 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:15:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2024-09-13 10:15:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-09-13 10:15:02,632 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:02,633 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:02,633 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-09-13 10:15:02,633 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:02,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash -965173163, now seen corresponding path program 1 times
[2024-09-13 10:15:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317241580]
[2024-09-13 10:15:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-13 10:15:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597535627]
[2024-09-13 10:15:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:15:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:15:02,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:15:02,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-13 10:15:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:02,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-09-13 10:15:02,708 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:15:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:02,820 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-13 10:15:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:15:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317241580]
[2024-09-13 10:15:03,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-13 10:15:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597535627]
[2024-09-13 10:15:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597535627] provided 1 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:15:03,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-13 10:15:03,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7
[2024-09-13 10:15:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569300841]
[2024-09-13 10:15:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:03,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-13 10:15:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-13 10:15:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-09-13 10:15:03,302 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:15:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:03,339 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions.
[2024-09-13 10:15:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-13 10:15:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2024-09-13 10:15:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:03,343 INFO L225 Difference]: With dead ends: 15
[2024-09-13 10:15:03,343 INFO L226 Difference]: Without dead ends: 15
[2024-09-13 10:15:03,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-09-13 10:15:03,344 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:03,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:03,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2024-09-13 10:15:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2024-09-13 10:15:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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)
[2024-09-13 10:15:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2024-09-13 10:15:03,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12
[2024-09-13 10:15:03,350 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:03,350 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2024-09-13 10:15:03,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:15:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2024-09-13 10:15:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-09-13 10:15:03,352 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-13 10:15:03,353 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:03,378 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-09-13 10:15:03,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-09-13 10:15:03,554 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] ===
[2024-09-13 10:15:03,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:15:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash 784073, now seen corresponding path program 1 times
[2024-09-13 10:15:03,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:15:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166574657]
[2024-09-13 10:15:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:15:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:15:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:03,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-13 10:15:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:03,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2024-09-13 10:15:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:15:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-13 10:15:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:15:03,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166574657]
[2024-09-13 10:15:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166574657] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:15:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:15:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-13 10:15:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667713517]
[2024-09-13 10:15:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:15:03,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 10:15:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:15:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 10:15:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:03,646 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-09-13 10:15:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:15:03,675 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions.
[2024-09-13 10:15:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-13 10:15:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 17
[2024-09-13 10:15:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:15:03,679 INFO L225 Difference]: With dead ends: 17
[2024-09-13 10:15:03,679 INFO L226 Difference]: Without dead ends: 0
[2024-09-13 10:15:03,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:15:03,680 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:15:03,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:15:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-13 10:15:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-13 10:15:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:15:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-13 10:15:03,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17
[2024-09-13 10:15:03,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:15:03,681 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-13 10:15:03,681 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-09-13 10:15:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-13 10:15:03,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-13 10:15:03,683 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (6 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (4 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (3 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (2 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining)
[2024-09-13 10:15:03,684 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 7 remaining)
[2024-09-13 10:15:03,685 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-09-13 10:15:03,689 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:15:03,691 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-13 10:15:03,693 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants
[2024-09-13 10:15:03,693 INFO L470 ceAbstractionStarter]: WitnessConsidered=1
[2024-09-13 10:15:03,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:15:03 BoogieIcfgContainer
[2024-09-13 10:15:03,694 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-13 10:15:03,694 INFO L158 Benchmark]: Toolchain (without parser) took 3228.25ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 100.7MB in the beginning and 142.2MB in the end (delta: -41.5MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB.
[2024-09-13 10:15:03,695 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:15:03,695 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:15:03,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.26ms. Allocated memory is still 159.4MB. Free memory was 100.7MB in the beginning and 86.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-13 10:15:03,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.98ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-13 10:15:03,698 INFO L158 Benchmark]: Boogie Preprocessor took 51.40ms. Allocated memory is still 159.4MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-13 10:15:03,698 INFO L158 Benchmark]: RCFGBuilder took 380.99ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 68.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-09-13 10:15:03,698 INFO L158 Benchmark]: TraceAbstraction took 2436.00ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 142.2MB in the end (delta: -74.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:15:03,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* Witness Parser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 321.26ms. Allocated memory is still 159.4MB. Free memory was 100.7MB in the beginning and 86.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.98ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 51.40ms. Allocated memory is still 159.4MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 380.99ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 68.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 2436.00ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 142.2MB in the end (delta: -74.3MB). There was no memory consumed. Max. memory is 16.1GB.
* 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
- PositiveResult [Line: 6]: procedure postcondition always holds
For all program executions holds that procedure postcondition always holds at this location
- PositiveResult [Line: 27]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 9]: procedure precondition always holds
For all program executions holds that procedure precondition always holds at this location
- PositiveResult [Line: 9]: procedure precondition always holds
For all program executions holds that procedure precondition always holds at this location
- PositiveResult [Line: 9]: procedure precondition always holds
For all program executions holds that procedure precondition always holds at this location
- PositiveResult [Line: 12]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- PositiveResult [Line: 9]: procedure postcondition always holds
For all program executions holds that procedure postcondition always holds at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 117 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 27, 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, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 710 SizeOfPredicates, 1 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 5/6 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
- AllSpecificationsHoldResult: All specifications hold
7 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-09-13 10:15:03,725 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...