./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 de325976 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-de32597-m [2024-09-18 15:36:29,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:36:30,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:36:30,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:36:30,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:36:30,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:36:30,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:36:30,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:36:30,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:36:30,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:36:30,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:36:30,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:36:30,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:36:30,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:36:30,049 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:36:30,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:36:30,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:36:30,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:36:30,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:36:30,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:36:30,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:36:30,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:36:30,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:36:30,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:36:30,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:36:30,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:36:30,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:36:30,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:36:30,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:36:30,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:36:30,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:36:30,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:36:30,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:36:30,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:36:30,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:36:30,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:36:30,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:36:30,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:36:30,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:36:30,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:36:30,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:36:30,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:36:30,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:36:30,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:36:30,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:36:30,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:36:30,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:36:30,323 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:36:30,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-18 15:36:31,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:36:31,882 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:36:31,882 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-18 15:36:31,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7494fc17a/8bcefeccac37408a9f3d736902be950b/FLAG37ec25f16 [2024-09-18 15:36:31,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7494fc17a/8bcefeccac37408a9f3d736902be950b [2024-09-18 15:36:31,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:36:31,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:36:31,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:36:31,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:36:31,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:36:31,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:36:31" (1/1) ... [2024-09-18 15:36:31,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0b271c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:31, skipping insertion in model container [2024-09-18 15:36:31,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:36:31" (1/1) ... [2024-09-18 15:36:31,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:36:32,103 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] [2024-09-18 15:36:32,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:36:32,151 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:36:32,167 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] [2024-09-18 15:36:32,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:36:32,191 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:36:32,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32 WrapperNode [2024-09-18 15:36:32,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:36:32,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:36:32,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:36:32,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:36:32,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,214 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:36:32,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:36:32,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:36:32,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:36:32,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:36:32,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,243 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]. [2024-09-18 15:36:32,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:36:32,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:36:32,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:36:32,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:36:32,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (1/1) ... [2024-09-18 15:36:32,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:36:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:32,296 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) [2024-09-18 15:36:32,299 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 [2024-09-18 15:36:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:36:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:36:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:36:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:36:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:36:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:36:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:36:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:36:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:36:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:36:32,401 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:36:32,402 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:36:32,542 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-18 15:36:32,542 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:36:32,579 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:36:32,580 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 15:36:32,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:36:32 BoogieIcfgContainer [2024-09-18 15:36:32,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:36:32,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:36:32,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:36:32,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:36:32,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:36:31" (1/3) ... [2024-09-18 15:36:32,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c415c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:36:32, skipping insertion in model container [2024-09-18 15:36:32,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:32" (2/3) ... [2024-09-18 15:36:32,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c415c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:36:32, skipping insertion in model container [2024-09-18 15:36:32,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:36:32" (3/3) ... [2024-09-18 15:36:32,590 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-09-18 15:36:32,605 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:36:32,605 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:36:32,648 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:36:32,654 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;@95fa2f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:36:32,655 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:36:32,660 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) [2024-09-18 15:36:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-18 15:36:32,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:32,668 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:32,669 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:32,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1996117268, now seen corresponding path program 1 times [2024-09-18 15:36:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47749145] [2024-09-18 15:36:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:32,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:32,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47749145] [2024-09-18 15:36:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47749145] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:32,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:36:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628842118] [2024-09-18 15:36:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:32,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:36:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:36:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:36:32,893 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) [2024-09-18 15:36:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:32,930 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-09-18 15:36:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:36:32,934 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 [2024-09-18 15:36:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:32,941 INFO L225 Difference]: With dead ends: 56 [2024-09-18 15:36:32,942 INFO L226 Difference]: Without dead ends: 27 [2024-09-18 15:36:32,946 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 [2024-09-18 15:36:32,950 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 [2024-09-18 15:36:32,952 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] [2024-09-18 15:36:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-18 15:36:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-18 15:36:32,991 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) [2024-09-18 15:36:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-18 15:36:32,995 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 13 [2024-09-18 15:36:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:32,996 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-18 15:36:32,997 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) [2024-09-18 15:36:32,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-18 15:36:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-18 15:36:33,000 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:33,000 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:33,000 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:36:33,001 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1160645557, now seen corresponding path program 1 times [2024-09-18 15:36:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:33,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452890721] [2024-09-18 15:36:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:33,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452890721] [2024-09-18 15:36:33,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452890721] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:33,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:33,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:36:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653516275] [2024-09-18 15:36:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:33,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:36:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:36:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:36:33,232 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) [2024-09-18 15:36:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:33,322 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-09-18 15:36:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:36:33,323 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 [2024-09-18 15:36:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:33,323 INFO L225 Difference]: With dead ends: 33 [2024-09-18 15:36:33,324 INFO L226 Difference]: Without dead ends: 31 [2024-09-18 15:36:33,324 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 [2024-09-18 15:36:33,325 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-09-18 15:36:33,326 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] [2024-09-18 15:36:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-18 15:36:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-18 15:36:33,343 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) [2024-09-18 15:36:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-09-18 15:36:33,346 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2024-09-18 15:36:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:33,346 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-09-18 15:36:33,347 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) [2024-09-18 15:36:33,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-09-18 15:36:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-18 15:36:33,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:33,348 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:33,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:36:33,348 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:33,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash -679603193, now seen corresponding path program 1 times [2024-09-18 15:36:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617780363] [2024-09-18 15:36:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 15:36:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617780363] [2024-09-18 15:36:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617780363] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 15:36:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058407935] [2024-09-18 15:36:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:33,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:36:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:36:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:36:33,505 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) [2024-09-18 15:36:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:33,626 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-18 15:36:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:36:33,627 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 [2024-09-18 15:36:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:33,628 INFO L225 Difference]: With dead ends: 46 [2024-09-18 15:36:33,629 INFO L226 Difference]: Without dead ends: 44 [2024-09-18 15:36:33,629 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 [2024-09-18 15:36:33,631 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 [2024-09-18 15:36:33,631 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] [2024-09-18 15:36:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-18 15:36:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-18 15:36:33,651 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) [2024-09-18 15:36:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-09-18 15:36:33,652 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 19 [2024-09-18 15:36:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:33,654 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-09-18 15:36:33,654 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) [2024-09-18 15:36:33,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-09-18 15:36:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-18 15:36:33,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:33,658 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] [2024-09-18 15:36:33,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 15:36:33,659 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:33,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1179305077, now seen corresponding path program 1 times [2024-09-18 15:36:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466109746] [2024-09-18 15:36:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:36:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466109746] [2024-09-18 15:36:33,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466109746] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:33,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:33,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 15:36:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113738638] [2024-09-18 15:36:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:33,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:36:33,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:36:33,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:36:33,797 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) [2024-09-18 15:36:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:33,908 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-09-18 15:36:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 15:36:33,908 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 [2024-09-18 15:36:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:33,910 INFO L225 Difference]: With dead ends: 52 [2024-09-18 15:36:33,911 INFO L226 Difference]: Without dead ends: 50 [2024-09-18 15:36:33,912 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 [2024-09-18 15:36:33,913 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 [2024-09-18 15:36:33,913 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] [2024-09-18 15:36:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-18 15:36:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-09-18 15:36:33,930 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) [2024-09-18 15:36:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-09-18 15:36:33,931 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 26 [2024-09-18 15:36:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:33,932 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-09-18 15:36:33,932 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) [2024-09-18 15:36:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-09-18 15:36:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-18 15:36:33,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:33,946 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] [2024-09-18 15:36:33,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-18 15:36:33,946 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:33,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 893389487, now seen corresponding path program 1 times [2024-09-18 15:36:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52619002] [2024-09-18 15:36:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 15:36:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-18 15:36:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 15:36:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:36:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52619002] [2024-09-18 15:36:34,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52619002] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:34,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 15:36:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275439776] [2024-09-18 15:36:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:34,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 15:36:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 15:36:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:36:34,113 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) [2024-09-18 15:36:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:34,260 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-09-18 15:36:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:36:34,261 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 [2024-09-18 15:36:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:34,262 INFO L225 Difference]: With dead ends: 71 [2024-09-18 15:36:34,262 INFO L226 Difference]: Without dead ends: 64 [2024-09-18 15:36:34,263 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 [2024-09-18 15:36:34,264 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 [2024-09-18 15:36:34,267 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] [2024-09-18 15:36:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-18 15:36:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-09-18 15:36:34,289 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) [2024-09-18 15:36:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-09-18 15:36:34,292 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 30 [2024-09-18 15:36:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:34,292 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-09-18 15:36:34,292 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) [2024-09-18 15:36:34,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-09-18 15:36:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-18 15:36:34,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:34,297 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] [2024-09-18 15:36:34,297 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-18 15:36:34,297 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1072747919, now seen corresponding path program 1 times [2024-09-18 15:36:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73108420] [2024-09-18 15:36:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 15:36:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:36:34,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73108420] [2024-09-18 15:36:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73108420] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 15:36:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402462668] [2024-09-18 15:36:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:34,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 15:36:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 15:36:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:36:34,418 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) [2024-09-18 15:36:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:34,519 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-18 15:36:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:36:34,522 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 [2024-09-18 15:36:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:34,523 INFO L225 Difference]: With dead ends: 72 [2024-09-18 15:36:34,523 INFO L226 Difference]: Without dead ends: 70 [2024-09-18 15:36:34,523 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 [2024-09-18 15:36:34,528 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 15:36:34,528 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] [2024-09-18 15:36:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-18 15:36:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-09-18 15:36:34,544 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) [2024-09-18 15:36:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-09-18 15:36:34,546 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2024-09-18 15:36:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:34,546 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-09-18 15:36:34,547 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) [2024-09-18 15:36:34,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-09-18 15:36:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-18 15:36:34,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:34,549 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] [2024-09-18 15:36:34,549 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-18 15:36:34,550 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:34,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -42548696, now seen corresponding path program 1 times [2024-09-18 15:36:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513995188] [2024-09-18 15:36:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 15:36:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-18 15:36:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-18 15:36:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-18 15:36:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:34,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513995188] [2024-09-18 15:36:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513995188] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764959206] [2024-09-18 15:36:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:34,807 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) [2024-09-18 15:36:34,808 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:36:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-18 15:36:34,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:35,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764959206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:35,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:35,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-18 15:36:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761626649] [2024-09-18 15:36:35,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:35,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-18 15:36:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-18 15:36:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:36:35,329 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) [2024-09-18 15:36:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:35,665 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-09-18 15:36:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 15:36:35,666 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 [2024-09-18 15:36:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:35,667 INFO L225 Difference]: With dead ends: 103 [2024-09-18 15:36:35,667 INFO L226 Difference]: Without dead ends: 88 [2024-09-18 15:36:35,668 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 [2024-09-18 15:36:35,669 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 [2024-09-18 15:36:35,669 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] [2024-09-18 15:36:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-18 15:36:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-09-18 15:36:35,691 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) [2024-09-18 15:36:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-09-18 15:36:35,696 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 54 [2024-09-18 15:36:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:35,697 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-09-18 15:36:35,697 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) [2024-09-18 15:36:35,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-09-18 15:36:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-18 15:36:35,698 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:35,698 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] [2024-09-18 15:36:35,718 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:36:35,904 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 [2024-09-18 15:36:35,905 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:35,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash -22060520, now seen corresponding path program 1 times [2024-09-18 15:36:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703354623] [2024-09-18 15:36:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 15:36:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-18 15:36:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-18 15:36:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703354623] [2024-09-18 15:36:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703354623] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901120759] [2024-09-18 15:36:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:36,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:36,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:36,108 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) [2024-09-18 15:36:36,109 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:36:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-18 15:36:36,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:36,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 15:36:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901120759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:36,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-09-18 15:36:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851370443] [2024-09-18 15:36:36,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:36,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-18 15:36:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-18 15:36:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:36:36,421 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) [2024-09-18 15:36:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:36,541 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-09-18 15:36:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 15:36:36,542 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 [2024-09-18 15:36:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:36,546 INFO L225 Difference]: With dead ends: 92 [2024-09-18 15:36:36,546 INFO L226 Difference]: Without dead ends: 90 [2024-09-18 15:36:36,546 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 [2024-09-18 15:36:36,547 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 15:36:36,549 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] [2024-09-18 15:36:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-18 15:36:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-18 15:36:36,582 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) [2024-09-18 15:36:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-09-18 15:36:36,586 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 55 [2024-09-18 15:36:36,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:36,586 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-09-18 15:36:36,587 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) [2024-09-18 15:36:36,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-09-18 15:36:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-18 15:36:36,592 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:36,592 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] [2024-09-18 15:36:36,608 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:36:36,795 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 [2024-09-18 15:36:36,796 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:36,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -111356737, now seen corresponding path program 2 times [2024-09-18 15:36:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:36,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127107551] [2024-09-18 15:36:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 15:36:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:36,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-18 15:36:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-18 15:36:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 15:36:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-18 15:36:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-09-18 15:36:37,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:37,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127107551] [2024-09-18 15:36:37,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127107551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:37,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140063366] [2024-09-18 15:36:37,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:37,047 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) [2024-09-18 15:36:37,049 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:36:37,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:37,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:37,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-18 15:36:37,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-18 15:36:37,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-18 15:36:37,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140063366] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:37,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:37,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2024-09-18 15:36:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264450092] [2024-09-18 15:36:37,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:37,505 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 15:36:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 15:36:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-18 15:36:37,506 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) [2024-09-18 15:36:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:37,838 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2024-09-18 15:36:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 15:36:37,839 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 [2024-09-18 15:36:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:37,840 INFO L225 Difference]: With dead ends: 100 [2024-09-18 15:36:37,841 INFO L226 Difference]: Without dead ends: 98 [2024-09-18 15:36:37,841 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 [2024-09-18 15:36:37,842 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 15:36:37,842 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] [2024-09-18 15:36:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-18 15:36:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-09-18 15:36:37,874 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) [2024-09-18 15:36:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-09-18 15:36:37,875 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 79 [2024-09-18 15:36:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:37,876 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-09-18 15:36:37,876 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) [2024-09-18 15:36:37,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-09-18 15:36:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-18 15:36:37,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:37,878 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] [2024-09-18 15:36:37,895 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:36:38,082 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 [2024-09-18 15:36:38,083 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:38,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1860395034, now seen corresponding path program 2 times [2024-09-18 15:36:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505877312] [2024-09-18 15:36:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:36:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 15:36:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 15:36:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-18 15:36:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-18 15:36:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 15:36:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-18 15:36:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-18 15:36:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:36:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 56 proven. 46 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-18 15:36:38,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:38,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505877312] [2024-09-18 15:36:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505877312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:38,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055082759] [2024-09-18 15:36:38,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:38,481 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) [2024-09-18 15:36:38,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:36:38,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:38,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:38,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-18 15:36:38,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 64 proven. 67 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-18 15:36:38,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 71 proven. 60 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-18 15:36:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055082759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:38,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 20 [2024-09-18 15:36:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982856148] [2024-09-18 15:36:38,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:38,901 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 15:36:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 15:36:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-09-18 15:36:38,902 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) [2024-09-18 15:36:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:39,209 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-18 15:36:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-18 15:36:39,209 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 [2024-09-18 15:36:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:39,210 INFO L225 Difference]: With dead ends: 105 [2024-09-18 15:36:39,210 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:36:39,211 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 [2024-09-18 15:36:39,212 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 [2024-09-18 15:36:39,212 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] [2024-09-18 15:36:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:36:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:36:39,213 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) [2024-09-18 15:36:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:36:39,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-09-18 15:36:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:39,213 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:36:39,214 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) [2024-09-18 15:36:39,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:36:39,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:36:39,217 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:36:39,232 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:39,417 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 [2024-09-18 15:36:39,420 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:39,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:36:40,499 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:36:40,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:36:40 BoogieIcfgContainer [2024-09-18 15:36:40,517 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:36:40,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:36:40,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:36:40,518 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:36:40,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:36:32" (3/4) ... [2024-09-18 15:36:40,520 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:36:40,575 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:36:40,576 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:36:40,576 INFO L158 Benchmark]: Toolchain (without parser) took 8668.33ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 112.8MB in the beginning and 77.0MB in the end (delta: 35.8MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,579 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 184.5MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:36:40,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.65ms. Allocated memory is still 184.5MB. Free memory was 112.6MB in the beginning and 149.3MB in the end (delta: -36.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.95ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 148.4MB in the end (delta: 918.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:36:40,580 INFO L158 Benchmark]: Boogie Preprocessor took 41.48ms. Allocated memory is still 184.5MB. Free memory was 148.4MB in the beginning and 147.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,580 INFO L158 Benchmark]: RCFGBuilder took 323.26ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 133.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,580 INFO L158 Benchmark]: TraceAbstraction took 7934.15ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 132.6MB in the beginning and 79.1MB in the end (delta: 53.6MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,580 INFO L158 Benchmark]: Witness Printer took 57.94ms. Allocated memory is still 234.9MB. Free memory was 79.1MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:36:40,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 184.5MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.65ms. Allocated memory is still 184.5MB. Free memory was 112.6MB in the beginning and 149.3MB in the end (delta: -36.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.95ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 148.4MB in the end (delta: 918.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.48ms. Allocated memory is still 184.5MB. Free memory was 148.4MB in the beginning and 147.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.26ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 133.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7934.15ms. Allocated memory was 184.5MB in the beginning and 234.9MB in the end (delta: 50.3MB). Free memory was 132.6MB in the beginning and 79.1MB in the end (delta: 53.6MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. * Witness Printer took 57.94ms. Allocated memory is still 234.9MB. Free memory was 79.1MB in the beginning and 77.0MB 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: 6.8s, 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, 3.3s 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: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:36:40,616 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