./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum04-2.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum04-2.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 22:58:23,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 22:58:23,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 22:58:23,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 22:58:23,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 22:58:23,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 22:58:23,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 22:58:23,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 22:58:23,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 22:58:23,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 22:58:23,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 22:58:23,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 22:58:23,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 22:58:23,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 22:58:23,408 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 22:58:23,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 22:58:23,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 22:58:23,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 22:58:23,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 22:58:23,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 22:58:23,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 22:58:23,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 22:58:23,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 22:58:23,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 22:58:23,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 22:58:23,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 22:58:23,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 22:58:23,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 22:58:23,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 22:58:23,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 22:58:23,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 22:58:23,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 22:58:23,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 22:58:23,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 22:58:23,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 22:58:23,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 22:58:23,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 22:58:23,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 22:58:23,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 22:58:23,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 22:58:23,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 22:58:23,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 22:58:23,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 22:58:23,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 22:58:23,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 22:58:23,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 22:58:23,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 22:58:23,710 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 22:58:23,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/sum04-2.i [2024-09-24 22:58:25,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 22:58:25,311 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 22:58:25,312 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/sum04-2.i [2024-09-24 22:58:25,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bb4c1654e/d9553fa4ef8c491c98315a82a742f960/FLAG99545817e [2024-09-24 22:58:25,701 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bb4c1654e/d9553fa4ef8c491c98315a82a742f960 [2024-09-24 22:58:25,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 22:58:25,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 22:58:25,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 22:58:25,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 22:58:25,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 22:58:25,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641b6b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25, skipping insertion in model container [2024-09-24 22:58:25,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 22:58:25,885 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/loops/sum04-2.i[808,821] [2024-09-24 22:58:25,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 22:58:25,915 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 22:58:25,929 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/loops/sum04-2.i[808,821] [2024-09-24 22:58:25,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 22:58:25,950 INFO L204 MainTranslator]: Completed translation [2024-09-24 22:58:25,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25 WrapperNode [2024-09-24 22:58:25,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 22:58:25,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 22:58:25,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 22:58:25,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 22:58:25,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,980 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 22:58:25,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 22:58:25,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 22:58:25,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 22:58:25,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 22:58:25,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:25,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,004 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 22:58:26,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 22:58:26,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 22:58:26,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 22:58:26,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 22:58:26,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (1/1) ... [2024-09-24 22:58:26,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 22:58:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 22:58:26,052 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) [2024-09-24 22:58:26,055 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 [2024-09-24 22:58:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 22:58:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 22:58:26,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 22:58:26,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 22:58:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 22:58:26,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 22:58:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 22:58:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 22:58:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 22:58:26,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 22:58:26,172 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 22:58:26,174 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 22:58:26,292 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-24 22:58:26,293 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 22:58:26,314 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 22:58:26,314 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 22:58:26,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:26 BoogieIcfgContainer [2024-09-24 22:58:26,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 22:58:26,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 22:58:26,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 22:58:26,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 22:58:26,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:58:25" (1/3) ... [2024-09-24 22:58:26,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1181a2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:26, skipping insertion in model container [2024-09-24 22:58:26,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:25" (2/3) ... [2024-09-24 22:58:26,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1181a2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:26, skipping insertion in model container [2024-09-24 22:58:26,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:26" (3/3) ... [2024-09-24 22:58:26,329 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2024-09-24 22:58:26,352 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 22:58:26,352 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 22:58:26,400 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 22:58:26,407 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=All, 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;@741d23f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 22:58:26,407 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 22:58:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 22:58:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-24 22:58:26,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:26,419 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:26,420 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1805749753, now seen corresponding path program 1 times [2024-09-24 22:58:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127191856] [2024-09-24 22:58:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:26,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127191856] [2024-09-24 22:58:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127191856] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 22:58:26,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 22:58:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 22:58:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529307661] [2024-09-24 22:58:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 22:58:26,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 22:58:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 22:58:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 22:58:26,601 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:26,620 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-09-24 22:58:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 22:58:26,623 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-24 22:58:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:26,627 INFO L225 Difference]: With dead ends: 28 [2024-09-24 22:58:26,627 INFO L226 Difference]: Without dead ends: 11 [2024-09-24 22:58:26,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 22:58:26,633 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 22:58:26,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 22:58:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-24 22:58:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-24 22:58:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-24 22:58:26,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2024-09-24 22:58:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:26,660 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-24 22:58:26,660 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-24 22:58:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-24 22:58:26,662 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:26,662 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:26,662 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 22:58:26,663 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:26,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1811290879, now seen corresponding path program 1 times [2024-09-24 22:58:26,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:26,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670295550] [2024-09-24 22:58:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:26,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670295550] [2024-09-24 22:58:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670295550] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 22:58:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 22:58:26,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 22:58:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818905410] [2024-09-24 22:58:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 22:58:26,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 22:58:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 22:58:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 22:58:26,769 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:26,789 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-09-24 22:58:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 22:58:26,790 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-24 22:58:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:26,791 INFO L225 Difference]: With dead ends: 17 [2024-09-24 22:58:26,791 INFO L226 Difference]: Without dead ends: 12 [2024-09-24 22:58:26,791 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 22:58:26,794 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 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 [2024-09-24 22:58:26,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 22:58:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-24 22:58:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-24 22:58:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-09-24 22:58:26,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2024-09-24 22:58:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:26,803 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-09-24 22:58:26,803 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:26,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-09-24 22:58:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-24 22:58:26,804 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:26,804 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:26,805 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 22:58:26,805 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:26,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash 463529748, now seen corresponding path program 1 times [2024-09-24 22:58:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172828892] [2024-09-24 22:58:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:26,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:26,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:26,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172828892] [2024-09-24 22:58:26,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172828892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 22:58:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367418150] [2024-09-24 22:58:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:26,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 22:58:26,890 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) [2024-09-24 22:58:26,892 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 22:58:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:26,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-24 22:58:26,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 22:58:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:26,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 22:58:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367418150] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 22:58:27,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 22:58:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-24 22:58:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681532014] [2024-09-24 22:58:27,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 22:58:27,053 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 22:58:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 22:58:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-24 22:58:27,057 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:27,075 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-09-24 22:58:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 22:58:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-24 22:58:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:27,076 INFO L225 Difference]: With dead ends: 20 [2024-09-24 22:58:27,076 INFO L226 Difference]: Without dead ends: 15 [2024-09-24 22:58:27,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-24 22:58:27,078 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 22:58:27,079 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 22:58:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-24 22:58:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-24 22:58:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-09-24 22:58:27,083 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-09-24 22:58:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:27,083 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-09-24 22:58:27,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-09-24 22:58:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-24 22:58:27,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:27,085 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:27,101 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 22:58:27,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:27,290 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:27,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1120096705, now seen corresponding path program 2 times [2024-09-24 22:58:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080140030] [2024-09-24 22:58:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:27,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080140030] [2024-09-24 22:58:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080140030] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 22:58:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306634795] [2024-09-24 22:58:27,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 22:58:27,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 22:58:27,490 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) [2024-09-24 22:58:27,493 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 22:58:27,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 22:58:27,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 22:58:27,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-24 22:58:27,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 22:58:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:27,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 22:58:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:27,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306634795] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 22:58:27,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 22:58:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-24 22:58:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452894305] [2024-09-24 22:58:27,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 22:58:27,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 22:58:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 22:58:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-24 22:58:27,668 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:27,690 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-09-24 22:58:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 22:58:27,692 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-24 22:58:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:27,693 INFO L225 Difference]: With dead ends: 24 [2024-09-24 22:58:27,693 INFO L226 Difference]: Without dead ends: 19 [2024-09-24 22:58:27,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-24 22:58:27,694 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 22:58:27,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 22:58:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-24 22:58:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-24 22:58:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-09-24 22:58:27,699 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2024-09-24 22:58:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:27,699 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-09-24 22:58:27,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:27,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-09-24 22:58:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-24 22:58:27,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:27,701 INFO L216 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:27,714 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 22:58:27,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:27,902 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:27,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -377987455, now seen corresponding path program 3 times [2024-09-24 22:58:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847353617] [2024-09-24 22:58:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:28,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:28,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:28,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847353617] [2024-09-24 22:58:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847353617] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 22:58:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444958092] [2024-09-24 22:58:28,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 22:58:28,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 22:58:28,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 22:58:28,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 22:58:28,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-24 22:58:28,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 22:58:28,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-24 22:58:28,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 22:58:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:28,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 22:58:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444958092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 22:58:28,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 22:58:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-24 22:58:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967458380] [2024-09-24 22:58:28,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 22:58:28,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-24 22:58:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-24 22:58:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2024-09-24 22:58:28,618 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:28,744 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2024-09-24 22:58:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 22:58:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-24 22:58:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:28,746 INFO L225 Difference]: With dead ends: 25 [2024-09-24 22:58:28,746 INFO L226 Difference]: Without dead ends: 20 [2024-09-24 22:58:28,747 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-09-24 22:58:28,747 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 22:58:28,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 22:58:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-24 22:58:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-09-24 22:58:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-09-24 22:58:28,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2024-09-24 22:58:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:28,755 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2024-09-24 22:58:28,755 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:28,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-09-24 22:58:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-24 22:58:28,756 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 22:58:28,756 INFO L216 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 22:58:28,774 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 22:58:28,956 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:28,957 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 22:58:28,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1946262932, now seen corresponding path program 4 times [2024-09-24 22:58:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 22:58:28,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277171709] [2024-09-24 22:58:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 22:58:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 22:58:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:29,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 22:58:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 22:58:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 22:58:29,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277171709] [2024-09-24 22:58:29,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277171709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 22:58:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540146684] [2024-09-24 22:58:29,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 22:58:29,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:29,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 22:58:29,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 22:58:29,096 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 22:58:29,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 22:58:29,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 22:58:29,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 22:58:29,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 22:58:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 22:58:29,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 22:58:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540146684] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 22:58:29,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 22:58:29,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 12 [2024-09-24 22:58:29,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326026423] [2024-09-24 22:58:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 22:58:29,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 22:58:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 22:58:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 22:58:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-09-24 22:58:29,169 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 22:58:29,191 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2024-09-24 22:58:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 22:58:29,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-09-24 22:58:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 22:58:29,194 INFO L225 Difference]: With dead ends: 20 [2024-09-24 22:58:29,194 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 22:58:29,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-09-24 22:58:29,195 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 22:58:29,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 22:58:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 22:58:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 22:58:29,198 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) [2024-09-24 22:58:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 22:58:29,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2024-09-24 22:58:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 22:58:29,199 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 22:58:29,200 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 22:58:29,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 22:58:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 22:58:29,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 22:58:29,203 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 22:58:29,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-24 22:58:29,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 22:58:29,407 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2024-09-24 22:58:29,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 22:58:29,513 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 22:58:29,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:58:29 BoogieIcfgContainer [2024-09-24 22:58:29,529 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 22:58:29,530 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 22:58:29,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 22:58:29,530 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 22:58:29,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:26" (3/4) ... [2024-09-24 22:58:29,533 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 22:58:29,585 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 22:58:29,585 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 22:58:29,586 INFO L158 Benchmark]: Toolchain (without parser) took 3881.39ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 112.5MB in the beginning and 162.1MB in the end (delta: -49.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2024-09-24 22:58:29,586 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 22:58:29,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.90ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 101.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 22:58:29,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.44ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.6MB in the end (delta: 824.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 22:58:29,587 INFO L158 Benchmark]: Boogie Preprocessor took 36.25ms. Allocated memory is still 167.8MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 22:58:29,588 INFO L158 Benchmark]: RCFGBuilder took 296.30ms. Allocated memory is still 167.8MB. Free memory was 98.6MB in the beginning and 87.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-24 22:58:29,588 INFO L158 Benchmark]: TraceAbstraction took 3208.63ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 86.4MB in the beginning and 164.2MB in the end (delta: -77.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 22:58:29,589 INFO L158 Benchmark]: Witness Printer took 55.95ms. Allocated memory is still 218.1MB. Free memory was 164.2MB in the beginning and 162.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 22:58:29,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.90ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 101.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.44ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.6MB in the end (delta: 824.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.25ms. Allocated memory is still 167.8MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.30ms. Allocated memory is still 167.8MB. Free memory was 98.6MB in the beginning and 87.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3208.63ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 86.4MB in the beginning and 164.2MB in the end (delta: -77.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.95ms. Allocated memory is still 218.1MB. Free memory was 164.2MB in the beginning and 162.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 9, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 227 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 54 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=5, InterpolantAutomatonStates: 45, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 144 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 1 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 82/231 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 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((((sn == 0) && (i == 1)) || ((7 == i) && (sn == 12))) || ((i == 3) && (sn == 4))) || ((14 == sn) && (i == 8))) || ((6 == sn) && (i == 4))) || ((i == 6) && (sn == 10))) || ((9 <= i) && (16 == sn))) || ((sn == 8) && (5 == i))) || ((i == 2) && (2 == sn))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 22:58:29,620 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE