./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps4-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/ps4-ll.c -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 ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:23:30,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:23:30,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:23:30,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:23:30,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:23:30,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:23:30,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:23:30,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:23:30,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:23:30,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:23:30,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:23:30,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:23:30,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:23:30,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:23:30,303 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:23:30,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:23:30,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:23:30,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:23:30,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:23:30,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:23:30,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:23:30,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:23:30,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:23:30,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:23:30,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:23:30,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:23:30,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:23:30,306 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:23:30,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:23:30,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:23:30,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:23:30,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:23:30,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:23:30,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:23:30,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:23:30,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:23:30,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:23:30,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:23:30,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:23:30,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:23:30,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:23:30,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:23:30,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:23:30,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:23:30,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:23:30,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:23:30,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:23:30,595 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:23:30,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-24 23:23:31,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:23:32,134 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:23:32,135 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-24 23:23:32,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/80246db7a/17db4166cc1d49d084f5948a6ea510b2/FLAG2e75a092e [2024-09-24 23:23:32,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/80246db7a/17db4166cc1d49d084f5948a6ea510b2 [2024-09-24 23:23:32,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:23:32,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:23:32,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:23:32,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:23:32,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:23:32,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101fe322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32, skipping insertion in model container [2024-09-24 23:23:32,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:23:32,322 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/nla-digbench/ps4-ll.c[458,471] [2024-09-24 23:23:32,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:23:32,344 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:23:32,355 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/nla-digbench/ps4-ll.c[458,471] [2024-09-24 23:23:32,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:23:32,374 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:23:32,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32 WrapperNode [2024-09-24 23:23:32,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:23:32,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:23:32,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:23:32,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:23:32,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,392 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:23:32,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:23:32,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:23:32,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:23:32,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:23:32,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,412 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:23:32,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:23:32,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:23:32,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:23:32,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:23:32,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (1/1) ... [2024-09-24 23:23:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:23:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:23:32,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-24 23:23:32,474 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-24 23:23:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:23:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:23:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:23:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:23:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:23:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:23:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:23:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:23:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:23:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:23:32,562 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:23:32,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:23:32,676 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-24 23:23:32,677 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:23:32,697 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:23:32,697 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 23:23:32,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:23:32 BoogieIcfgContainer [2024-09-24 23:23:32,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:23:32,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:23:32,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:23:32,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:23:32,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:23:32" (1/3) ... [2024-09-24 23:23:32,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdeeca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:23:32, skipping insertion in model container [2024-09-24 23:23:32,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:23:32" (2/3) ... [2024-09-24 23:23:32,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdeeca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:23:32, skipping insertion in model container [2024-09-24 23:23:32,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:23:32" (3/3) ... [2024-09-24 23:23:32,707 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll.c [2024-09-24 23:23:32,721 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:23:32,721 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:23:32,780 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:23:32,788 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;@4c8a2425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:23:32,789 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:23:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:23:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-24 23:23:32,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:23:32,799 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:23:32,799 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:23:32,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -351285298, now seen corresponding path program 1 times [2024-09-24 23:23:32,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:23:32,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368791901] [2024-09-24 23:23:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:23:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:23:32,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:23:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:23:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:23:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:23:32,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368791901] [2024-09-24 23:23:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368791901] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:23:32,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:23:32,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:23:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930944853] [2024-09-24 23:23:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:23:33,001 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:23:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:23:33,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:23:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:23:33,026 INFO L87 Difference]: Start difference. First operand has 20 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:23:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:23:33,055 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2024-09-24 23:23:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:23:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-24 23:23:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:23:33,064 INFO L225 Difference]: With dead ends: 35 [2024-09-24 23:23:33,064 INFO L226 Difference]: Without dead ends: 16 [2024-09-24 23:23:33,068 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:23:33,073 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:23:33,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:23:33,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-24 23:23:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-24 23:23:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:23:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-09-24 23:23:33,110 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-09-24 23:23:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:23:33,111 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-09-24 23:23:33,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:23:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-09-24 23:23:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-24 23:23:33,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:23:33,115 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:23:33,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:23:33,116 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:23:33,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash -358733048, now seen corresponding path program 1 times [2024-09-24 23:23:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:23:33,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040975274] [2024-09-24 23:23:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:33,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:23:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:23:33,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248817418] [2024-09-24 23:23:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:23:33,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:23:33,152 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:23:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:23:33,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:23:33,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:23:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:23:33,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:23:33,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:23:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040975274] [2024-09-24 23:23:33,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:23:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248817418] [2024-09-24 23:23:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248817418] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:23:33,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:23:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:23:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417086617] [2024-09-24 23:23:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:23:33,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:23:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:23:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:23:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:23:33,337 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:23:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:23:33,402 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-24 23:23:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:23:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-24 23:23:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:23:33,404 INFO L225 Difference]: With dead ends: 27 [2024-09-24 23:23:33,405 INFO L226 Difference]: Without dead ends: 23 [2024-09-24 23:23:33,405 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:23:33,407 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:23:33,408 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:23:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-24 23:23:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-24 23:23:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-24 23:23:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-24 23:23:33,419 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2024-09-24 23:23:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:23:33,419 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-24 23:23:33,419 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:23:33,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-24 23:23:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-24 23:23:33,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:23:33,421 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:23:33,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:23:33,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:33,626 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:23:33,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1065532175, now seen corresponding path program 1 times [2024-09-24 23:23:33,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:23:33,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448922113] [2024-09-24 23:23:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:23:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:23:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772867966] [2024-09-24 23:23:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:23:33,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:23:33,661 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:23:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:23:33,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:23:33,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:23:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:23:33,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:23:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-24 23:23:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:23:33,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448922113] [2024-09-24 23:23:33,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:23:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772867966] [2024-09-24 23:23:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772867966] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:23:33,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:23:33,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-24 23:23:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658618966] [2024-09-24 23:23:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:23:33,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:23:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:23:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:23:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:23:33,894 INFO L87 Difference]: Start difference. First operand 23 states and 25 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, (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) [2024-09-24 23:23:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:23:33,943 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-09-24 23:23:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:23:33,944 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, (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 17 [2024-09-24 23:23:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:23:33,945 INFO L225 Difference]: With dead ends: 29 [2024-09-24 23:23:33,946 INFO L226 Difference]: Without dead ends: 24 [2024-09-24 23:23:33,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:23:33,947 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:23:33,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:23:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-24 23:23:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-24 23:23:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:23:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-09-24 23:23:33,966 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2024-09-24 23:23:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:23:33,967 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-09-24 23:23:33,967 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, (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) [2024-09-24 23:23:33,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-09-24 23:23:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-24 23:23:33,968 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:23:33,968 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:23:33,982 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:23:34,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:34,170 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:23:34,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash -12265240, now seen corresponding path program 1 times [2024-09-24 23:23:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:23:34,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86761372] [2024-09-24 23:23:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:23:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:23:34,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046154446] [2024-09-24 23:23:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:34,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:23:34,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:23:34,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:23:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:23:34,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-24 23:23:34,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:23:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-24 23:23:34,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:23:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-24 23:23:34,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:23:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86761372] [2024-09-24 23:23:34,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:23:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046154446] [2024-09-24 23:23:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046154446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:23:34,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:23:34,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-24 23:23:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34218753] [2024-09-24 23:23:34,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:23:34,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-24 23:23:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:23:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-24 23:23:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:23:34,708 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:23:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:23:34,886 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-24 23:23:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:23:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2024-09-24 23:23:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:23:34,888 INFO L225 Difference]: With dead ends: 43 [2024-09-24 23:23:34,888 INFO L226 Difference]: Without dead ends: 37 [2024-09-24 23:23:34,889 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:23:34,890 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:23:34,890 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 68 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:23:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-24 23:23:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-24 23:23:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:23:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-09-24 23:23:34,903 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 23 [2024-09-24 23:23:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:23:34,904 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-09-24 23:23:34,904 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-24 23:23:34,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-09-24 23:23:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-24 23:23:34,905 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:23:34,905 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:23:34,923 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:23:35,106 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:35,106 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:23:35,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash -845420161, now seen corresponding path program 2 times [2024-09-24 23:23:35,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:23:35,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455591890] [2024-09-24 23:23:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:23:35,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:23:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:23:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190984751] [2024-09-24 23:23:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:23:35,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:23:35,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:23:35,211 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:23:35,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:23:35,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:23:35,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:23:35,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:23:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:23:35,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:23:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:23:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:23:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455591890] [2024-09-24 23:23:35,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:23:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190984751] [2024-09-24 23:23:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190984751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:23:35,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:23:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-24 23:23:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169105135] [2024-09-24 23:23:35,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:23:35,834 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-24 23:23:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:23:35,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-24 23:23:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:23:35,835 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:23:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:23:36,113 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-24 23:23:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-24 23:23:36,114 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 44 [2024-09-24 23:23:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:23:36,115 INFO L225 Difference]: With dead ends: 41 [2024-09-24 23:23:36,115 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:23:36,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:23:36,116 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:23:36,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:23:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:23:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:23:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:23:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:23:36,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2024-09-24 23:23:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:23:36,118 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:23:36,118 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-24 23:23:36,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:23:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:23:36,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:23:36,121 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:23:36,134 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:23:36,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:23:36,325 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-24 23:23:36,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:23:36,621 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:23:36,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:23:36 BoogieIcfgContainer [2024-09-24 23:23:36,643 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:23:36,644 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:23:36,644 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:23:36,644 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:23:36,644 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:23:32" (3/4) ... [2024-09-24 23:23:36,646 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:23:36,693 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:23:36,694 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:23:36,694 INFO L158 Benchmark]: Toolchain (without parser) took 4535.30ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 92.1MB in the beginning and 61.6MB in the end (delta: 30.5MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,695 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 114.4MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:23:36,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.04ms. Allocated memory is still 146.8MB. Free memory was 92.1MB in the beginning and 80.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.25ms. Allocated memory is still 146.8MB. Free memory was 80.5MB in the beginning and 79.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,698 INFO L158 Benchmark]: Boogie Preprocessor took 29.66ms. Allocated memory is still 146.8MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:23:36,698 INFO L158 Benchmark]: RCFGBuilder took 275.00ms. Allocated memory is still 146.8MB. Free memory was 77.9MB in the beginning and 66.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,698 INFO L158 Benchmark]: TraceAbstraction took 3942.82ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 65.3MB in the beginning and 63.7MB in the end (delta: 1.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,699 INFO L158 Benchmark]: Witness Printer took 49.97ms. Allocated memory is still 207.6MB. Free memory was 63.7MB in the beginning and 61.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:23:36,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 114.4MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.04ms. Allocated memory is still 146.8MB. Free memory was 92.1MB in the beginning and 80.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.25ms. Allocated memory is still 146.8MB. Free memory was 80.5MB in the beginning and 79.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.66ms. Allocated memory is still 146.8MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.00ms. Allocated memory is still 146.8MB. Free memory was 77.9MB in the beginning and 66.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3942.82ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 65.3MB in the beginning and 63.7MB in the end (delta: 1.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 49.97ms. Allocated memory is still 207.6MB. Free memory was 63.7MB in the beginning and 61.6MB 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: 12]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 72 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 964 SizeOfPredicates, 8 NumberOfNonLiveVariables, 306 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 94/190 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: 26]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:23:36,721 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