This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:26:52,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:26:52,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:26:52,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:26:52,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:26:52,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:26:52,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:26:52,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:26:52,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:26:52,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:26:52,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:26:52,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:26:52,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:26:52,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:26:52,309 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:26:52,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:26:52,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:26:52,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:26:52,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:26:52,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:26:52,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:26:52,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:26:52,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:26:52,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:26:52,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:26:52,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:26:52,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:26:52,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:26:52,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:26:52,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:26:52,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:26:52,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:26:52,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:26:52,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:26:52,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:26:52,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:26:52,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:26:52,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:26:52,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:26:52,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:26:52,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:26:52,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:26:52,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:26:52,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:26:52,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:26:52,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:26:52,517 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:26:52,517 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:26:52,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/ps6-ll_valuebound20.yml/witness-2.1.yml [2024-09-13 10:26:52,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:26:52,574 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:26:52,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2024-09-13 10:26:53,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:26:53,914 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:26:53,915 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2024-09-13 10:26:53,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/89bda5164/791d1a1daad741119695e570363eed6c/FLAG567ae3c64 [2024-09-13 10:26:54,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/89bda5164/791d1a1daad741119695e570363eed6c [2024-09-13 10:26:54,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:26:54,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:26:54,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:26:54,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:26:54,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:26:54,349 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 10:26:52" (1/2) ... [2024-09-13 10:26:54,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d2a030 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,350 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 10:26:52" (1/2) ... [2024-09-13 10:26:54,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fcfe076 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:26:54" (2/2) ... [2024-09-13 10:26:54,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d2a030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:26:54" (2/2) ... [2024-09-13 10:26:54,357 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:26:54,357 INFO L1541 ArrayList]: Loop invariant at [L28-L37] (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__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 10:26:54,357 INFO L1541 ArrayList]: Function contract at [L9]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 10:26:54,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:26:54,487 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-scaling/ps6-ll_valuebound20.c[458,471] [2024-09-13 10:26:54,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:26:54,508 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 10:26:54,557 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-scaling/ps6-ll_valuebound20.c[458,471] Start Parsing Local [2024-09-13 10:26:54,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:26:54,589 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:26:54,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54 WrapperNode [2024-09-13 10:26:54,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:26:54,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:26:54,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:26:54,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:26:54,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,614 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-09-13 10:26:54,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:26:54,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:26:54,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:26:54,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:26:54,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,641 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 10:26:54,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:26:54,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:26:54,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:26:54,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:26:54,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (1/1) ... [2024-09-13 10:26:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:26:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:26:54,679 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 10:26:54,681 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 10:26:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:26:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:26:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:26:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:26:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:26:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:26:54,777 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:26:54,779 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:26:54,892 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:26:54,918 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-09-13 10:26:54,918 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:26:54,940 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:26:54,940 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 10:26:54,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:26:54 BoogieIcfgContainer [2024-09-13 10:26:54,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:26:54,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:26:54,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:26:54,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:26:54,973 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 10:26:52" (1/4) ... [2024-09-13 10:26:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4521e557 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:26:54" (2/4) ... [2024-09-13 10:26:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4521e557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:26:54" (3/4) ... [2024-09-13 10:26:54,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4521e557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:26:54, skipping insertion in model container [2024-09-13 10:26:54,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:26:54" (4/4) ... [2024-09-13 10:26:54,977 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound20.c [2024-09-13 10:26:55,002 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:26:55,003 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-09-13 10:26:55,046 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:26:55,053 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;@37bc79e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:26:55,053 INFO L337 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-09-13 10:26:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 10:26:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 10:26:55,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:55,062 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:55,063 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)] === [2024-09-13 10:26:55,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:55,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1234933320, now seen corresponding path program 1 times [2024-09-13 10:26:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591216029] [2024-09-13 10:26:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:26:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:26:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,236 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 10:26:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591216029] [2024-09-13 10:26:55,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591216029] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:26:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459405339] [2024-09-13 10:26:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:55,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 10:26:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 10:26:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:26:55,272 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:26:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:55,294 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-09-13 10:26:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 10:26:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-13 10:26:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:55,301 INFO L225 Difference]: With dead ends: 27 [2024-09-13 10:26:55,311 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 10:26:55,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 10:26:55,317 INFO L434 NwaCegarLoop]: 27 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, 27 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 10:26:55,318 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 10:26:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 10:26:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:26:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-13 10:26:55,349 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2024-09-13 10:26:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:55,366 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-13 10:26:55,367 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:26:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-13 10:26:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 10:26:55,368 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:55,368 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:55,368 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:26:55,368 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:26:55,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 843753352, now seen corresponding path program 1 times [2024-09-13 10:26:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226979686] [2024-09-13 10:26:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:26:55,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005869918] [2024-09-13 10:26:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:55,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:26:55,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:26:55,419 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 10:26:55,424 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 10:26:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 10:26:55,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:26:55,510 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 10:26:55,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:26:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226979686] [2024-09-13 10:26:55,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:26:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005869918] [2024-09-13 10:26:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005869918] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:55,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:26:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124115179] [2024-09-13 10:26:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:55,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:26:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:26:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:26:55,513 INFO L87 Difference]: Start difference. First operand 25 states and 28 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:55,546 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-09-13 10:26:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:26:55,547 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-13 10:26:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:55,547 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:26:55,547 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 10:26:55,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 10:26:55,548 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:26:55,549 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 10:26:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-13 10:26:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 10:26:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-13 10:26:55,558 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2024-09-13 10:26:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:55,559 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-13 10:26:55,559 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-13 10:26:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:26:55,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:55,560 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:55,574 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 10:26:55,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:26:55,765 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:26:55,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1878299149, now seen corresponding path program 1 times [2024-09-13 10:26:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:55,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623975803] [2024-09-13 10:26:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:55,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:26:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:26:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:55,884 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 10:26:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623975803] [2024-09-13 10:26:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623975803] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:26:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984298367] [2024-09-13 10:26:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:55,886 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:26:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:26:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:26:55,886 INFO L87 Difference]: Start difference. First operand 28 states and 32 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:55,918 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-13 10:26:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:26:55,919 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-13 10:26:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:55,920 INFO L225 Difference]: With dead ends: 27 [2024-09-13 10:26:55,920 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 10:26:55,920 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 10:26:55,921 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 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 10:26:55,921 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 10:26:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 10:26:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 10:26:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 10:26:55,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2024-09-13 10:26:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:55,934 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 10:26:55,934 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 10:26:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:26:55,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:55,939 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:55,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 10:26:55,940 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:26:55,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:55,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1878299310, now seen corresponding path program 1 times [2024-09-13 10:26:55,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:55,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638029515] [2024-09-13 10:26:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:26:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:26:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,113 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 10:26:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638029515] [2024-09-13 10:26:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638029515] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:56,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:26:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088790633] [2024-09-13 10:26:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:56,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:26:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:26:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:26:56,121 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:56,138 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-13 10:26:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:26:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-13 10:26:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:56,140 INFO L225 Difference]: With dead ends: 25 [2024-09-13 10:26:56,141 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 10:26:56,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 10:26:56,142 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 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 10:26:56,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 10:26:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 10:26:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 10:26:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-13 10:26:56,153 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2024-09-13 10:26:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:56,157 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-13 10:26:56,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:26:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-13 10:26:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 10:26:56,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:56,158 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:56,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:26:56,158 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)] === [2024-09-13 10:26:56,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1575986062, now seen corresponding path program 1 times [2024-09-13 10:26:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:56,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512846163] [2024-09-13 10:26:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:26:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:26:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 10:26:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,316 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 10:26:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512846163] [2024-09-13 10:26:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512846163] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:26:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87922757] [2024-09-13 10:26:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:56,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:26:56,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:26:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:26:56,326 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:26:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:56,354 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-13 10:26:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:26:56,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-13 10:26:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:56,355 INFO L225 Difference]: With dead ends: 23 [2024-09-13 10:26:56,356 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 10:26:56,358 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 10:26:56,359 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 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 10:26:56,359 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 10:26:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-13 10:26:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:26:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-13 10:26:56,364 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 21 [2024-09-13 10:26:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:56,366 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-13 10:26:56,366 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:26:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-13 10:26:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 10:26:56,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:56,367 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:56,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:26:56,367 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:26:56,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1575986021, now seen corresponding path program 1 times [2024-09-13 10:26:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767933366] [2024-09-13 10:26:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:26:56,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183520289] [2024-09-13 10:26:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:56,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:26:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:26:56,384 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 10:26:56,387 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 10:26:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:56,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 10:26:56,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:26:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:26:56,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:26:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:26:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767933366] [2024-09-13 10:26:56,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:26:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183520289] [2024-09-13 10:26:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183520289] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:26:56,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:26:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-09-13 10:26:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159375916] [2024-09-13 10:26:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:56,739 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:26:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:26:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:26:56,740 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:26:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:56,756 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-09-13 10:26:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:26:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-13 10:26:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:56,757 INFO L225 Difference]: With dead ends: 20 [2024-09-13 10:26:56,757 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 10:26:56,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:26:56,758 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 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 10:26:56,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 10:26:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-13 10:26:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:26:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-13 10:26:56,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 21 [2024-09-13 10:26:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:56,761 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-13 10:26:56,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:26:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-13 10:26:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 10:26:56,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:26:56,762 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:56,775 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 10:26:56,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:26:56,965 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:26:56,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:26:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 641411954, now seen corresponding path program 1 times [2024-09-13 10:26:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:26:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109064082] [2024-09-13 10:26:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:26:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:26:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:57,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:26:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:57,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 10:26:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:57,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 10:26:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:57,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:26:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:26:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 10:26:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:26:57,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109064082] [2024-09-13 10:26:57,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109064082] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:26:57,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:26:57,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:26:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448304157] [2024-09-13 10:26:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:26:57,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:26:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:26:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:26:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:26:57,056 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 10:26:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:26:57,073 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-09-13 10:26:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:26:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2024-09-13 10:26:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:26:57,074 INFO L225 Difference]: With dead ends: 22 [2024-09-13 10:26:57,074 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:26:57,074 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 [2024-09-13 10:26:57,074 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 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 10:26:57,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:26:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:26:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:26:57,075 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 10:26:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:26:57,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-09-13 10:26:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:26:57,075 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:26:57,075 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 10:26:57,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:26:57,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:26:57,077 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-09-13 10:26:57,078 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (4 of 6 remaining) [2024-09-13 10:26:57,078 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (3 of 6 remaining) [2024-09-13 10:26:57,078 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (2 of 6 remaining) [2024-09-13 10:26:57,078 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-09-13 10:26:57,078 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 6 remaining) [2024-09-13 10:26:57,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 10:26:57,080 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:26:57,081 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:26:57,082 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 10:26:57,083 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 10:26:57,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:26:57 BoogieIcfgContainer [2024-09-13 10:26:57,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:26:57,084 INFO L158 Benchmark]: Toolchain (without parser) took 2740.35ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 88.3MB in the beginning and 85.7MB in the end (delta: 2.6MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. [2024-09-13 10:26:57,084 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:26:57,084 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 163.6MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:26:57,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.52ms. Allocated memory is still 163.6MB. Free memory was 88.0MB in the beginning and 74.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:26:57,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.93ms. Allocated memory is still 163.6MB. Free memory was 74.1MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:26:57,084 INFO L158 Benchmark]: Boogie Preprocessor took 41.55ms. Allocated memory is still 163.6MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:26:57,088 INFO L158 Benchmark]: RCFGBuilder took 310.53ms. Allocated memory is still 163.6MB. Free memory was 70.9MB in the beginning and 131.9MB in the end (delta: -61.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-09-13 10:26:57,088 INFO L158 Benchmark]: TraceAbstraction took 2114.91ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 131.2MB in the beginning and 85.7MB in the end (delta: 45.5MB). Peak memory consumption was 131.3MB. Max. memory is 16.1GB. [2024-09-13 10:26:57,089 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 0.18ms. Allocated memory is still 163.6MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 163.6MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.52ms. Allocated memory is still 163.6MB. Free memory was 88.0MB in the beginning and 74.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.93ms. Allocated memory is still 163.6MB. Free memory was 74.1MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.55ms. Allocated memory is still 163.6MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.53ms. Allocated memory is still 163.6MB. Free memory was 70.9MB in the beginning and 131.9MB in the end (delta: -61.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2114.91ms. Allocated memory was 163.6MB in the beginning and 251.7MB in the end (delta: 88.1MB). Free memory was 131.2MB in the beginning and 85.7MB in the end (delta: 45.5MB). Peak memory consumption was 131.3MB. 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: 28]: 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 3 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 141 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 683 SizeOfPredicates, 1 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 37/38 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! [2024-09-13 10:26:57,116 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...