This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m
[2024-09-20 13:31:16,320 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-20 13:31:16,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-20 13:31:16,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-20 13:31:16,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-20 13:31:16,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-20 13:31:16,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-20 13:31:16,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-20 13:31:16,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-20 13:31:16,402 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-20 13:31:16,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-20 13:31:16,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-20 13:31:16,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-20 13:31:16,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-20 13:31:16,404 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-20 13:31:16,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-20 13:31:16,404 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-20 13:31:16,404 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-20 13:31:16,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-20 13:31:16,406 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-20 13:31:16,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-20 13:31:16,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-20 13:31:16,407 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-20 13:31:16,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-20 13:31:16,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-20 13:31:16,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-20 13:31:16,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-20 13:31:16,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 13:31:16,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-20 13:31:16,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-20 13:31:16,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-20 13:31:16,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-20 13:31:16,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-20 13:31:16,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-20 13:31:16,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-20 13:31:16,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-20 13:31:16,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-20 13:31:16,415 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None
[2024-09-20 13:31:16,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-20 13:31:16,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-20 13:31:16,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-20 13:31:16,648 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-20 13:31:16,648 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-20 13:31:16,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/hh2012-ex2b.i
[2024-09-20 13:31:17,997 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-20 13:31:18,138 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-20 13:31:18,139 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/hh2012-ex2b.i
[2024-09-20 13:31:18,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fedcdd576/b40ce47475d34abb8186a1d23a0db679/FLAG4bdc47e3b
[2024-09-20 13:31:18,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fedcdd576/b40ce47475d34abb8186a1d23a0db679
[2024-09-20 13:31:18,564 INFO L270 PluginConnector]: Initializing Witness Parser...
[2024-09-20 13:31:18,564 INFO L274 PluginConnector]: Witness Parser initialized
[2024-09-20 13:31:18,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hh2012-ex2b.yml/witness-2.1.yml
[2024-09-20 13:31:18,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-20 13:31:18,608 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2024-09-20 13:31:18,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-20 13:31:18,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-20 13:31:18,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-20 13:31:18,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:18" (1/2) ...
[2024-09-20 13:31:18,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3a599e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:18, skipping insertion in model container
[2024-09-20 13:31:18,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:18" (1/2) ...
[2024-09-20 13:31:18,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cc51477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:18, skipping insertion in model container
[2024-09-20 13:31:18,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:31:18" (2/2) ...
[2024-09-20 13:31:18,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3a599e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18, skipping insertion in model container
[2024-09-20 13:31:18,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:31:18" (2/2) ...
[2024-09-20 13:31:18,624 INFO L93 nessWitnessExtractor]: Found the following entries in the witness:
[2024-09-20 13:31:18,625 INFO L1541 ArrayList]: Loop invariant at [L17-L28] (n < 61)
[2024-09-20 13:31:18,625 INFO L1541 ArrayList]: Function contract at [L15]: requires null, ensures 0
[2024-09-20 13:31:18,626 INFO L1541 ArrayList]: Function contract at [L13]: requires (\old(cond) != 0), ensures (\old(cond) != 0)
[2024-09-20 13:31:18,637 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-20 13:31:18,834 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/hh2012-ex2b.i[800,813]
[2024-09-20 13:31:18,867 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 13:31:18,874 INFO L200 MainTranslator]: Completed pre-run
Start Parsing Global
Start Parsing Global
[2024-09-20 13:31:18,906 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/hh2012-ex2b.i[800,813]
Start Parsing Global
Start Parsing Local
[2024-09-20 13:31:18,911 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 13:31:18,925 INFO L204 MainTranslator]: Completed translation
[2024-09-20 13:31:18,925 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18 WrapperNode
[2024-09-20 13:31:18,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-20 13:31:18,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-20 13:31:18,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-20 13:31:18,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-20 13:31:18,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,947 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27
[2024-09-20 13:31:18,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-20 13:31:18,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-20 13:31:18,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-20 13:31:18,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-20 13:31:18,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,986 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
[2024-09-20 13:31:18,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:18,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-20 13:31:18,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-20 13:31:18,998 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-20 13:31:18,998 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-20 13:31:18,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (1/1) ...
[2024-09-20 13:31:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 13:31:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-20 13:31:19,035 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)
[2024-09-20 13:31:19,036 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
[2024-09-20 13:31:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-20 13:31:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2024-09-20 13:31:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-20 13:31:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-20 13:31:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-20 13:31:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-20 13:31:19,109 INFO L242 CfgBuilder]: Building ICFG
[2024-09-20 13:31:19,111 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-20 13:31:19,165 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2024-09-20 13:31:19,175 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2024-09-20 13:31:19,175 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-20 13:31:19,189 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-20 13:31:19,189 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-20 13:31:19,189 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:19 BoogieIcfgContainer
[2024-09-20 13:31:19,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-20 13:31:19,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-20 13:31:19,191 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-20 13:31:19,194 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-20 13:31:19,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:18" (1/4) ...
[2024-09-20 13:31:19,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688dd014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:19, skipping insertion in model container
[2024-09-20 13:31:19,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:31:18" (2/4) ...
[2024-09-20 13:31:19,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688dd014 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:31:19, skipping insertion in model container
[2024-09-20 13:31:19,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:31:18" (3/4) ...
[2024-09-20 13:31:19,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688dd014 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:31:19, skipping insertion in model container
[2024-09-20 13:31:19,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:19" (4/4) ...
[2024-09-20 13:31:19,196 INFO L112 eAbstractionObserver]: Analyzing ICFG hh2012-ex2b.i
[2024-09-20 13:31:19,208 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-20 13:31:19,208 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2024-09-20 13:31:19,248 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-20 13:31:19,253 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;@362973e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-20 13:31:19,254 INFO L337 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-09-20 13:31:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 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)
[2024-09-20 13:31:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2024-09-20 13:31:19,262 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 13:31:19,263 INFO L216 NwaCegarLoop]: trace histogram [1, 1]
[2024-09-20 13:31:19,263 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] ===
[2024-09-20 13:31:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 13:31:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2732, now seen corresponding path program 1 times
[2024-09-20 13:31:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 13:31:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731228764]
[2024-09-20 13:31:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:19,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 13:31:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 13:31:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731228764]
[2024-09-20 13:31:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731228764] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 13:31:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 13:31:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-09-20 13:31:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188022679]
[2024-09-20 13:31:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 13:31:19,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-20 13:31:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 13:31:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-20 13:31:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-20 13:31:19,431 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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)
[2024-09-20 13:31:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 13:31:19,463 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions.
[2024-09-20 13:31:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-20 13:31:19,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2
[2024-09-20 13:31:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 13:31:19,470 INFO L225 Difference]: With dead ends: 25
[2024-09-20 13:31:19,470 INFO L226 Difference]: Without dead ends: 25
[2024-09-20 13:31:19,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-20 13:31:19,476 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-20 13:31:19,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-20 13:31:19,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-09-20 13:31:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2024-09-20 13:31:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 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)
[2024-09-20 13:31:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions.
[2024-09-20 13:31:19,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 2
[2024-09-20 13:31:19,529 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 13:31:19,529 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions.
[2024-09-20 13:31:19,534 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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)
[2024-09-20 13:31:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions.
[2024-09-20 13:31:19,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-09-20 13:31:19,536 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 13:31:19,536 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-09-20 13:31:19,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-20 13:31:19,540 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] ===
[2024-09-20 13:31:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 13:31:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 947701321, now seen corresponding path program 1 times
[2024-09-20 13:31:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 13:31:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353809835]
[2024-09-20 13:31:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 13:31:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 13:31:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353809835]
[2024-09-20 13:31:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353809835] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 13:31:19,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 13:31:19,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-20 13:31:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294400437]
[2024-09-20 13:31:19,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 13:31:19,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-20 13:31:19,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 13:31:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-20 13:31:19,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-20 13:31:19,622 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-09-20 13:31:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 13:31:19,635 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions.
[2024-09-20 13:31:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-20 13:31:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7
[2024-09-20 13:31:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 13:31:19,636 INFO L225 Difference]: With dead ends: 24
[2024-09-20 13:31:19,637 INFO L226 Difference]: Without dead ends: 24
[2024-09-20 13:31:19,637 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
[2024-09-20 13:31:19,638 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 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
[2024-09-20 13:31:19,638 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-20 13:31:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-09-20 13:31:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-09-20 13:31:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 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)
[2024-09-20 13:31:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions.
[2024-09-20 13:31:19,641 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 7
[2024-09-20 13:31:19,642 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 13:31:19,642 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions.
[2024-09-20 13:31:19,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-09-20 13:31:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions.
[2024-09-20 13:31:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-09-20 13:31:19,642 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 13:31:19,643 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-09-20 13:31:19,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-09-20 13:31:19,643 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] ===
[2024-09-20 13:31:19,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 13:31:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 947701160, now seen corresponding path program 1 times
[2024-09-20 13:31:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 13:31:19,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274345921]
[2024-09-20 13:31:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 13:31:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 13:31:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274345921]
[2024-09-20 13:31:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274345921] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 13:31:19,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 13:31:19,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-20 13:31:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341905928]
[2024-09-20 13:31:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 13:31:19,673 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-20 13:31:19,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 13:31:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-20 13:31:19,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-20 13:31:19,674 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-09-20 13:31:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 13:31:19,680 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions.
[2024-09-20 13:31:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-09-20 13:31:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7
[2024-09-20 13:31:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 13:31:19,681 INFO L225 Difference]: With dead ends: 22
[2024-09-20 13:31:19,681 INFO L226 Difference]: Without dead ends: 22
[2024-09-20 13:31:19,681 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-20 13:31:19,682 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
[2024-09-20 13:31:19,682 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]
[2024-09-20 13:31:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-09-20 13:31:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-09-20 13:31:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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)
[2024-09-20 13:31:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions.
[2024-09-20 13:31:19,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 7
[2024-09-20 13:31:19,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 13:31:19,686 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions.
[2024-09-20 13:31:19,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2024-09-20 13:31:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions.
[2024-09-20 13:31:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-09-20 13:31:19,686 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 13:31:19,686 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-20 13:31:19,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-09-20 13:31:19,687 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] ===
[2024-09-20 13:31:19,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 13:31:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 309095391, now seen corresponding path program 1 times
[2024-09-20 13:31:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 13:31:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762432098]
[2024-09-20 13:31:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 13:31:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2024-09-20 13:31:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 13:31:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762432098]
[2024-09-20 13:31:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762432098] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-20 13:31:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27165632]
[2024-09-20 13:31:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-20 13:31:19,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-20 13:31:19,774 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)
[2024-09-20 13:31:19,777 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-20 13:31:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:19,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-09-20 13:31:19,855 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-20 13:31:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,935 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-20 13:31:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 13:31:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27165632] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-20 13:31:19,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-20 13:31:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-09-20 13:31:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412711809]
[2024-09-20 13:31:19,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-20 13:31:19,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-09-20 13:31:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 13:31:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-09-20 13:31:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-09-20 13:31:19,992 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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)
[2024-09-20 13:31:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 13:31:20,055 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions.
[2024-09-20 13:31:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-09-20 13:31:20,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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) Word has length 12
[2024-09-20 13:31:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 13:31:20,057 INFO L225 Difference]: With dead ends: 32
[2024-09-20 13:31:20,058 INFO L226 Difference]: Without dead ends: 32
[2024-09-20 13:31:20,058 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-09-20 13:31:20,059 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-20 13:31:20,061 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-20 13:31:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-09-20 13:31:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2024-09-20 13:31:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-09-20 13:31:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions.
[2024-09-20 13:31:20,068 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 12
[2024-09-20 13:31:20,069 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 13:31:20,070 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions.
[2024-09-20 13:31:20,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 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)
[2024-09-20 13:31:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions.
[2024-09-20 13:31:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2024-09-20 13:31:20,072 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 13:31:20,072 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1]
[2024-09-20 13:31:20,084 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-20 13:31:20,276 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-20 13:31:20,277 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] ===
[2024-09-20 13:31:20,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 13:31:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash -423986868, now seen corresponding path program 1 times
[2024-09-20 13:31:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 13:31:20,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706895856]
[2024-09-20 13:31:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 13:31:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 13:31:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:20,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2024-09-20 13:31:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:20,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2024-09-20 13:31:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:20,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2024-09-20 13:31:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:20,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2024-09-20 13:31:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 13:31:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-09-20 13:31:20,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 13:31:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706895856]
[2024-09-20 13:31:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706895856] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 13:31:20,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 13:31:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-20 13:31:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530943193]
[2024-09-20 13:31:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 13:31:20,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-20 13:31:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 13:31:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-20 13:31:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-20 13:31:20,421 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2024-09-20 13:31:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 13:31:20,436 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions.
[2024-09-20 13:31:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-20 13:31:20,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 42
[2024-09-20 13:31:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 13:31:20,438 INFO L225 Difference]: With dead ends: 31
[2024-09-20 13:31:20,438 INFO L226 Difference]: Without dead ends: 0
[2024-09-20 13:31:20,438 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-20 13:31:20,439 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-20 13:31:20,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-20 13:31:20,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-20 13:31:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-20 13:31:20,441 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)
[2024-09-20 13:31:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-20 13:31:20,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42
[2024-09-20 13:31:20,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 13:31:20,442 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-20 13:31:20,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2024-09-20 13:31:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-20 13:31:20,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-20 13:31:20,444 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining)
[2024-09-20 13:31:20,445 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (4 of 6 remaining)
[2024-09-20 13:31:20,445 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (3 of 6 remaining)
[2024-09-20 13:31:20,445 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (2 of 6 remaining)
[2024-09-20 13:31:20,445 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2024-09-20 13:31:20,445 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 6 remaining)
[2024-09-20 13:31:20,446 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-09-20 13:31:20,448 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2024-09-20 13:31:20,450 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-20 13:31:20,452 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants
[2024-09-20 13:31:20,452 INFO L470 ceAbstractionStarter]: WitnessConsidered=1
[2024-09-20 13:31:20,452 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:20 BoogieIcfgContainer
[2024-09-20 13:31:20,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-20 13:31:20,453 INFO L158 Benchmark]: Toolchain (without parser) took 1844.60ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 110.1MB in the beginning and 205.5MB in the end (delta: -95.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-09-20 13:31:20,453 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 186.6MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-20 13:31:20,453 INFO L158 Benchmark]: Witness Parser took 0.55ms. Allocated memory is still 186.6MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-20 13:31:20,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.44ms. Allocated memory is still 186.6MB. Free memory was 110.1MB in the beginning and 96.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-09-20 13:31:20,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.05ms. Allocated memory is still 186.6MB. Free memory was 96.9MB in the beginning and 95.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-20 13:31:20,454 INFO L158 Benchmark]: Boogie Preprocessor took 46.00ms. Allocated memory is still 186.6MB. Free memory was 95.5MB in the beginning and 154.7MB in the end (delta: -59.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB.
[2024-09-20 13:31:20,454 INFO L158 Benchmark]: RCFGBuilder took 192.13ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 154.6MB in the beginning and 244.2MB in the end (delta: -89.6MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB.
[2024-09-20 13:31:20,455 INFO L158 Benchmark]: TraceAbstraction took 1261.43ms. Allocated memory is still 285.2MB. Free memory was 244.2MB in the beginning and 205.5MB in the end (delta: 38.8MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB.
[2024-09-20 13:31:20,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.48ms. Allocated memory is still 186.6MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB.
* Witness Parser took 0.55ms. Allocated memory is still 186.6MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 316.44ms. Allocated memory is still 186.6MB. Free memory was 110.1MB in the beginning and 96.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 21.05ms. Allocated memory is still 186.6MB. Free memory was 96.9MB in the beginning and 95.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 46.00ms. Allocated memory is still 186.6MB. Free memory was 95.5MB in the beginning and 154.7MB in the end (delta: -59.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB.
* RCFGBuilder took 192.13ms. Allocated memory was 186.6MB in the beginning and 285.2MB in the end (delta: 98.6MB). Free memory was 154.6MB in the beginning and 244.2MB in the end (delta: -89.6MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 1261.43ms. Allocated memory is still 285.2MB. Free memory was 244.2MB in the beginning and 205.5MB in the end (delta: 38.8MB). Peak memory consumption was 36.7MB. 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: 17]: invariant of correctness witness holds
For all program executions holds that invariant of correctness witness holds at this location
- PositiveResult [Line: 13]: procedure precondition always holds
For all program executions holds that procedure precondition always holds at this location
- PositiveResult [Line: 13]: procedure precondition always holds
For all program executions holds that procedure precondition always holds at this location
- PositiveResult [Line: 15]: procedure postcondition always holds
For all program executions holds that procedure postcondition always holds at this location
- PositiveResult [Line: 13]: 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: 13]: 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, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 72 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 60/63 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
6 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-09-20 13:31:20,477 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...