./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/sendmail-close-angle.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 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/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/loop-invgen/sendmail-close-angle.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 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 --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-27b4987-m [2024-09-21 11:24:17,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:24:17,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:24:17,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:24:17,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:24:17,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:24:17,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:24:17,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:24:17,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:24:17,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:24:17,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:24:17,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:24:17,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:24:17,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:24:17,884 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:24:17,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:24:17,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:24:17,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:24:17,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:24:17,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:24:17,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:24:17,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:24:17,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:24:17,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:24:17,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:24:17,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:24:17,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:24:17,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:24:17,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:24:17,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:24:17,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:24:17,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:24:17,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:24:17,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:24:17,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:24:17,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:24:17,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:24:17,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:24:17,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:24:17,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:24:17,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:24:17,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:24:17,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:24:18,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:24:18,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:24:18,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:24:18,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:24:18,160 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:24:18,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-21 11:24:19,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:24:19,676 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:24:19,677 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-21 11:24:19,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bc0aa10a2/f5898ca558e841f8ad96c052e7790a83/FLAGe858e1788 [2024-09-21 11:24:19,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bc0aa10a2/f5898ca558e841f8ad96c052e7790a83 [2024-09-21 11:24:19,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:24:19,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:24:19,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:24:19,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:24:19,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:24:19,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:19,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa8095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19, skipping insertion in model container [2024-09-21 11:24:19,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:19,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:24:19,890 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2024-09-21 11:24:19,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:24:19,926 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:24:19,939 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2024-09-21 11:24:19,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:24:19,962 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:24:19,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19 WrapperNode [2024-09-21 11:24:19,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:24:19,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:24:19,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:24:19,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:24:19,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:19,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:19,983 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:24:19,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:24:19,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:24:19,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:24:19,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:24:20,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,032 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]. [2024-09-21 11:24:20,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:24:20,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:24:20,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:24:20,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:24:20,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (1/1) ... [2024-09-21 11:24:20,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:24:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:20,090 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) [2024-09-21 11:24:20,092 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 [2024-09-21 11:24:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:24:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:24:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:24:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:24:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:24:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:24:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:24:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:24:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:24:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:24:20,208 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:24:20,210 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:24:20,334 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-21 11:24:20,334 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:24:20,356 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:24:20,356 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:24:20,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:20 BoogieIcfgContainer [2024-09-21 11:24:20,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:24:20,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:24:20,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:24:20,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:24:20,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:19" (1/3) ... [2024-09-21 11:24:20,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69564ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:20, skipping insertion in model container [2024-09-21 11:24:20,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:19" (2/3) ... [2024-09-21 11:24:20,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69564ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:20, skipping insertion in model container [2024-09-21 11:24:20,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:20" (3/3) ... [2024-09-21 11:24:20,368 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-09-21 11:24:20,389 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:24:20,389 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:24:20,432 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:24:20,439 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;@47e332dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:24:20,439 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:24:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-21 11:24:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 11:24:20,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:20,449 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:20,449 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:20,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1996117268, now seen corresponding path program 1 times [2024-09-21 11:24:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814729376] [2024-09-21 11:24:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:24:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814729376] [2024-09-21 11:24:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814729376] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:20,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:20,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:24:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836893235] [2024-09-21 11:24:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:20,599 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:24:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:24:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:24:20,621 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-09-21 11:24:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:20,659 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-09-21 11:24:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:24:20,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2024-09-21 11:24:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:20,670 INFO L225 Difference]: With dead ends: 56 [2024-09-21 11:24:20,671 INFO L226 Difference]: Without dead ends: 27 [2024-09-21 11:24:20,674 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 [2024-09-21 11:24:20,679 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:20,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:24:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-21 11:24:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-21 11:24:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-21 11:24:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-21 11:24:20,724 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 13 [2024-09-21 11:24:20,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:20,725 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-21 11:24:20,725 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-09-21 11:24:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-21 11:24:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-21 11:24:20,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:20,727 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:20,728 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:24:20,728 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1160645557, now seen corresponding path program 1 times [2024-09-21 11:24:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012958180] [2024-09-21 11:24:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:24:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:20,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012958180] [2024-09-21 11:24:20,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012958180] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:20,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:24:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090785598] [2024-09-21 11:24:20,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:20,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:24:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:24:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:24:20,955 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-21 11:24:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:21,056 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-09-21 11:24:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:24:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 [2024-09-21 11:24:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:21,058 INFO L225 Difference]: With dead ends: 33 [2024-09-21 11:24:21,058 INFO L226 Difference]: Without dead ends: 31 [2024-09-21 11:24:21,058 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:24:21,060 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:21,060 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-21 11:24:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-21 11:24:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-21 11:24:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-09-21 11:24:21,072 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2024-09-21 11:24:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:21,072 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-09-21 11:24:21,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-21 11:24:21,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-09-21 11:24:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-21 11:24:21,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:21,074 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:21,075 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 11:24:21,075 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -679603193, now seen corresponding path program 1 times [2024-09-21 11:24:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443579833] [2024-09-21 11:24:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 11:24:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:24:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443579833] [2024-09-21 11:24:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443579833] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:21,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:21,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-21 11:24:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147533402] [2024-09-21 11:24:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:21,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:24:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:24:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:24:21,266 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:24:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:21,387 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-21 11:24:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:24:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-21 11:24:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:21,390 INFO L225 Difference]: With dead ends: 46 [2024-09-21 11:24:21,391 INFO L226 Difference]: Without dead ends: 44 [2024-09-21 11:24:21,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:24:21,392 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:21,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 109 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-21 11:24:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-21 11:24:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-21 11:24:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-09-21 11:24:21,410 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 19 [2024-09-21 11:24:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:21,411 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-09-21 11:24:21,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:24:21,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-09-21 11:24:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-21 11:24:21,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:21,412 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:21,413 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-21 11:24:21,413 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:21,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1179305077, now seen corresponding path program 1 times [2024-09-21 11:24:21,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:21,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228399133] [2024-09-21 11:24:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:21,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:24:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228399133] [2024-09-21 11:24:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228399133] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-21 11:24:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752751350] [2024-09-21 11:24:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:21,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:24:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:24:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:24:21,546 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 11:24:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:21,654 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-09-21 11:24:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:24:21,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-09-21 11:24:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:21,656 INFO L225 Difference]: With dead ends: 52 [2024-09-21 11:24:21,657 INFO L226 Difference]: Without dead ends: 50 [2024-09-21 11:24:21,658 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-21 11:24:21,659 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:21,662 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 190 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-21 11:24:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-09-21 11:24:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-21 11:24:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-09-21 11:24:21,684 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 26 [2024-09-21 11:24:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:21,684 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-09-21 11:24:21,685 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 11:24:21,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-09-21 11:24:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-21 11:24:21,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:21,686 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:21,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-21 11:24:21,688 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:21,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash 893389487, now seen corresponding path program 1 times [2024-09-21 11:24:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55780205] [2024-09-21 11:24:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 11:24:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-21 11:24:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:24:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:24:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55780205] [2024-09-21 11:24:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55780205] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:21,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-21 11:24:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035698505] [2024-09-21 11:24:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:21,896 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 11:24:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 11:24:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-21 11:24:21,897 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-21 11:24:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:22,053 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-09-21 11:24:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:24:22,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-09-21 11:24:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:22,055 INFO L225 Difference]: With dead ends: 71 [2024-09-21 11:24:22,055 INFO L226 Difference]: Without dead ends: 64 [2024-09-21 11:24:22,056 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-21 11:24:22,056 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:22,057 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 96 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-21 11:24:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-09-21 11:24:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 39 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-21 11:24:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-09-21 11:24:22,070 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 30 [2024-09-21 11:24:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:22,070 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-09-21 11:24:22,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-21 11:24:22,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-09-21 11:24:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 11:24:22,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:22,072 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:22,072 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-21 11:24:22,072 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:22,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1072747919, now seen corresponding path program 1 times [2024-09-21 11:24:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118363561] [2024-09-21 11:24:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:24:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118363561] [2024-09-21 11:24:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118363561] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:24:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:24:22,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-21 11:24:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584304527] [2024-09-21 11:24:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:24:22,183 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 11:24:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 11:24:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-21 11:24:22,184 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-21 11:24:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:22,279 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-21 11:24:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:24:22,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-09-21 11:24:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:22,280 INFO L225 Difference]: With dead ends: 72 [2024-09-21 11:24:22,281 INFO L226 Difference]: Without dead ends: 70 [2024-09-21 11:24:22,282 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:24:22,283 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:22,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 137 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-21 11:24:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-09-21 11:24:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-21 11:24:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-09-21 11:24:22,299 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2024-09-21 11:24:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:22,299 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-09-21 11:24:22,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-21 11:24:22,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-09-21 11:24:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-21 11:24:22,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:22,302 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:22,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-21 11:24:22,302 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:22,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -42548696, now seen corresponding path program 1 times [2024-09-21 11:24:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738070372] [2024-09-21 11:24:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738070372] [2024-09-21 11:24:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738070372] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455859961] [2024-09-21 11:24:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:22,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:22,521 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) [2024-09-21 11:24:22,522 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:24:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:22,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 11:24:22,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:22,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:22,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455859961] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:22,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-21 11:24:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821165416] [2024-09-21 11:24:22,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:22,986 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:24:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:24:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:24:22,987 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-21 11:24:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:23,314 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-09-21 11:24:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:24:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 54 [2024-09-21 11:24:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:23,316 INFO L225 Difference]: With dead ends: 103 [2024-09-21 11:24:23,316 INFO L226 Difference]: Without dead ends: 88 [2024-09-21 11:24:23,317 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-21 11:24:23,318 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:23,318 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 193 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-21 11:24:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-09-21 11:24:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.1) internal successors, (55), 53 states have internal predecessors, (55), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-21 11:24:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-09-21 11:24:23,340 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 54 [2024-09-21 11:24:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:23,341 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-09-21 11:24:23,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-21 11:24:23,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-09-21 11:24:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-21 11:24:23,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:23,343 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:23,362 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:23,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-21 11:24:23,546 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:23,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash -22060520, now seen corresponding path program 1 times [2024-09-21 11:24:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:23,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874567533] [2024-09-21 11:24:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874567533] [2024-09-21 11:24:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874567533] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162981616] [2024-09-21 11:24:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:23,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:23,701 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) [2024-09-21 11:24:23,702 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:24:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-21 11:24:23,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:23,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162981616] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:23,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-09-21 11:24:24,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116025185] [2024-09-21 11:24:24,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:24,001 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-21 11:24:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-21 11:24:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-21 11:24:24,002 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-21 11:24:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:24,115 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-09-21 11:24:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 11:24:24,116 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 55 [2024-09-21 11:24:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:24,118 INFO L225 Difference]: With dead ends: 92 [2024-09-21 11:24:24,118 INFO L226 Difference]: Without dead ends: 90 [2024-09-21 11:24:24,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:24:24,119 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:24,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 198 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-21 11:24:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-21 11:24:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 56 states have internal predecessors, (58), 26 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-21 11:24:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-09-21 11:24:24,144 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 55 [2024-09-21 11:24:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:24,145 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-09-21 11:24:24,145 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-21 11:24:24,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-09-21 11:24:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 11:24:24,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:24,149 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:24,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:24:24,349 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:24,350 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:24,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -111356737, now seen corresponding path program 2 times [2024-09-21 11:24:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479776013] [2024-09-21 11:24:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-09-21 11:24:24,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:24,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479776013] [2024-09-21 11:24:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479776013] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840544526] [2024-09-21 11:24:24,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:24,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:24,567 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) [2024-09-21 11:24:24,568 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:24:24,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:24,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:24,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-21 11:24:24,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:24,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840544526] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:25,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2024-09-21 11:24:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365341225] [2024-09-21 11:24:25,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:25,029 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 11:24:25,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 11:24:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:25,032 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-21 11:24:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:25,389 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2024-09-21 11:24:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 11:24:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 79 [2024-09-21 11:24:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:25,392 INFO L225 Difference]: With dead ends: 100 [2024-09-21 11:24:25,393 INFO L226 Difference]: Without dead ends: 98 [2024-09-21 11:24:25,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-09-21 11:24:25,394 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:25,394 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 187 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-21 11:24:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-09-21 11:24:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 59 states have internal predecessors, (61), 26 states have call successors, (26), 12 states have call predecessors, (26), 11 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-21 11:24:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-09-21 11:24:25,428 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 79 [2024-09-21 11:24:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:25,428 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-09-21 11:24:25,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-21 11:24:25,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-09-21 11:24:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-21 11:24:25,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:25,434 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:25,451 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 11:24:25,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-21 11:24:25,636 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:25,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1860395034, now seen corresponding path program 2 times [2024-09-21 11:24:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:25,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062625886] [2024-09-21 11:24:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:25,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:24:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:25,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:24:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:24:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 56 proven. 46 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-21 11:24:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062625886] [2024-09-21 11:24:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062625886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067357914] [2024-09-21 11:24:26,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:26,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:26,017 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) [2024-09-21 11:24:26,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:24:26,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:26,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:26,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-21 11:24:26,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 64 proven. 67 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-21 11:24:26,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 71 proven. 60 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-21 11:24:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067357914] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:26,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 20 [2024-09-21 11:24:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075791701] [2024-09-21 11:24:26,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:26,453 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 11:24:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 11:24:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:26,454 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-21 11:24:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:26,760 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-21 11:24:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 11:24:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) Word has length 102 [2024-09-21 11:24:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:26,761 INFO L225 Difference]: With dead ends: 105 [2024-09-21 11:24:26,761 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:24:26,763 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:24:26,763 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:26,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 234 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:24:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:24:26,764 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) [2024-09-21 11:24:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:24:26,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-09-21 11:24:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:26,764 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:24:26,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-21 11:24:26,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:24:26,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:24:26,768 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:24:26,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:24:26,971 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:26,975 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:26,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:24:28,028 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:24:28,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:24:28 BoogieIcfgContainer [2024-09-21 11:24:28,047 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:24:28,047 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:24:28,047 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:24:28,048 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:24:28,048 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:20" (3/4) ... [2024-09-21 11:24:28,050 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:24:28,097 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:24:28,097 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:24:28,098 INFO L158 Benchmark]: Toolchain (without parser) took 8391.02ms. Allocated memory was 159.4MB in the beginning and 262.1MB in the end (delta: 102.8MB). Free memory was 86.5MB in the beginning and 115.3MB in the end (delta: -28.8MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,098 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 110.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:24:28,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.25ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 74.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.55ms. Allocated memory is still 159.4MB. Free memory was 74.6MB in the beginning and 73.7MB in the end (delta: 906.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:24:28,099 INFO L158 Benchmark]: Boogie Preprocessor took 65.40ms. Allocated memory is still 159.4MB. Free memory was 73.7MB in the beginning and 128.7MB in the end (delta: -55.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,100 INFO L158 Benchmark]: RCFGBuilder took 307.20ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 128.6MB in the beginning and 176.8MB in the end (delta: -48.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,100 INFO L158 Benchmark]: TraceAbstraction took 7687.82ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 175.8MB in the beginning and 117.4MB in the end (delta: 58.4MB). Peak memory consumption was 144.0MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,100 INFO L158 Benchmark]: Witness Printer took 49.98ms. Allocated memory is still 262.1MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:24:28,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 110.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.25ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 74.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.55ms. Allocated memory is still 159.4MB. Free memory was 74.6MB in the beginning and 73.7MB in the end (delta: 906.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.40ms. Allocated memory is still 159.4MB. Free memory was 73.7MB in the beginning and 128.7MB in the end (delta: -55.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * RCFGBuilder took 307.20ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 128.6MB in the beginning and 176.8MB in the end (delta: -48.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7687.82ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 175.8MB in the beginning and 117.4MB in the end (delta: 58.4MB). Peak memory consumption was 144.0MB. Max. memory is 16.1GB. * Witness Printer took 49.98ms. Allocated memory is still 262.1MB. Free memory was 117.4MB in the beginning and 115.3MB 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: 19]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 10, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1160 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 962 IncrementalHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 303 mSDtfsCounter, 962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 665 SyntacticMatches, 18 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=9, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 985 ConstructedInterpolants, 0 QuantifiedInterpolants, 2990 SizeOfPredicates, 14 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2630/2902 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: 55]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((long long) 2 + buflim) == bufferlen) && (in == 0)) && (0 <= buflim)) && (buf == 0)) && (((long long) bufferlen + 1) <= inlen)) || ((((((((long long) bufferlen + in) + 1) <= ((long long) buf + inlen)) && (((long long) 2 + buflim) == bufferlen)) && (1 <= in)) && (0 <= buf)) && (buf <= buflim))) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-21 11:24:28,133 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