./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/recursive-simple/id2_i5_o5-2.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 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:49:45,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:49:45,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:49:45,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:49:45,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:49:45,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:49:45,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:49:45,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:49:45,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:49:45,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:49:45,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:49:45,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:49:45,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:49:45,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:49:45,338 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:49:45,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:49:45,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:49:45,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:49:45,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:49:45,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:49:45,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:49:45,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:49:45,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:49:45,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:49:45,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:49:45,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:49:45,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:49:45,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:49:45,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:49:45,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:49:45,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:49:45,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:49:45,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:49:45,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:49:45,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:49:45,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:49:45,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:49:45,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:49:45,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:49:45,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:49:45,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:49:45,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:49:45,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:49:45,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:49:45,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:49:45,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:49:45,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:49:45,567 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:49:45,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2024-09-13 09:49:46,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:49:46,884 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:49:46,885 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2024-09-13 09:49:46,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/049ff523a/bcc1767c12b2413390fadb97160333ad/FLAG5fd28e9eb [2024-09-13 09:49:47,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/049ff523a/bcc1767c12b2413390fadb97160333ad [2024-09-13 09:49:47,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:49:47,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:49:47,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:49:47,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:49:47,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:49:47,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d816f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47, skipping insertion in model container [2024-09-13 09:49:47,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:49:47,456 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2024-09-13 09:49:47,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:49:47,472 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:49:47,487 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2024-09-13 09:49:47,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:49:47,506 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:49:47,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47 WrapperNode [2024-09-13 09:49:47,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:49:47,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:49:47,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:49:47,508 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:49:47,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,525 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:49:47,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:49:47,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:49:47,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:49:47,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:49:47,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,544 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]. [2024-09-13 09:49:47,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:49:47,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:49:47,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:49:47,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:49:47,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (1/1) ... [2024-09-13 09:49:47,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:49:47,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:47,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 09:49:47,585 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 09:49:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:49:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:49:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:49:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:49:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:49:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:49:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2024-09-13 09:49:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2024-09-13 09:49:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:49:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:49:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-09-13 09:49:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-09-13 09:49:47,689 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:49:47,691 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:49:47,792 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 09:49:47,792 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:49:47,806 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:49:47,806 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 09:49:47,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:49:47 BoogieIcfgContainer [2024-09-13 09:49:47,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:49:47,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:49:47,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:49:47,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:49:47,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:49:47" (1/3) ... [2024-09-13 09:49:47,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153490ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:49:47, skipping insertion in model container [2024-09-13 09:49:47,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:49:47" (2/3) ... [2024-09-13 09:49:47,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153490ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:49:47, skipping insertion in model container [2024-09-13 09:49:47,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:49:47" (3/3) ... [2024-09-13 09:49:47,813 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2024-09-13 09:49:47,826 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:49:47,826 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:49:47,864 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:49:47,869 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;@632f1aa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:49:47,869 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:49:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 09:49:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 09:49:47,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:47,879 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:47,880 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:47,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash -600647039, now seen corresponding path program 1 times [2024-09-13 09:49:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902042160] [2024-09-13 09:49:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:47,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:49:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902042160] [2024-09-13 09:49:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902042160] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:49:48,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:49:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:49:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996266508] [2024-09-13 09:49:48,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:49:48,096 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:49:48,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:49:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:49:48,118 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:49:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:48,169 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-09-13 09:49:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:49:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-13 09:49:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:48,180 INFO L225 Difference]: With dead ends: 36 [2024-09-13 09:49:48,181 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 09:49:48,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:49:48,187 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:48,187 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:49:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 09:49:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 09:49:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 09:49:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-09-13 09:49:48,221 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2024-09-13 09:49:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:48,221 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-09-13 09:49:48,221 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:49:48,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-09-13 09:49:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 09:49:48,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:48,223 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:48,223 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:49:48,223 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:48,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1186051473, now seen corresponding path program 1 times [2024-09-13 09:49:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906080184] [2024-09-13 09:49:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:49:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906080184] [2024-09-13 09:49:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906080184] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:49:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:49:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 09:49:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700024305] [2024-09-13 09:49:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:49:48,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 09:49:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 09:49:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 09:49:48,426 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 09:49:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:48,497 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2024-09-13 09:49:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 09:49:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-13 09:49:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:48,498 INFO L225 Difference]: With dead ends: 33 [2024-09-13 09:49:48,498 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 09:49:48,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-13 09:49:48,499 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:48,500 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 09:49:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 09:49:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 09:49:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-09-13 09:49:48,515 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2024-09-13 09:49:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:48,515 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-09-13 09:49:48,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 09:49:48,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-09-13 09:49:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 09:49:48,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:48,517 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:48,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 09:49:48,518 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:48,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:48,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1993719855, now seen corresponding path program 1 times [2024-09-13 09:49:48,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:48,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975693789] [2024-09-13 09:49:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:49:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975693789] [2024-09-13 09:49:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975693789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608016158] [2024-09-13 09:49:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:48,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:48,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:49:48,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:49:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:48,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:49:48,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:49:48,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:49:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608016158] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:49,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:49,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 16 [2024-09-13 09:49:49,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093799921] [2024-09-13 09:49:49,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:49,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 09:49:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 09:49:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-13 09:49:49,143 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 09:49:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:49,224 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-09-13 09:49:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:49:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 25 [2024-09-13 09:49:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:49,225 INFO L225 Difference]: With dead ends: 39 [2024-09-13 09:49:49,226 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 09:49:49,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:49:49,228 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:49,229 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 117 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 09:49:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-09-13 09:49:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 09:49:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-13 09:49:49,237 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2024-09-13 09:49:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:49,238 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-13 09:49:49,239 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 9 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 09:49:49,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-13 09:49:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-13 09:49:49,240 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:49,241 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:49,253 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 09:49:49,444 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:49,445 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:49,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1577860927, now seen corresponding path program 1 times [2024-09-13 09:49:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919946615] [2024-09-13 09:49:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:49:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919946615] [2024-09-13 09:49:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919946615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115823279] [2024-09-13 09:49:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:49,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:49,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:49,659 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) [2024-09-13 09:49:49,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:49:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:49,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:49:49,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 09:49:49,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:49:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115823279] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:50,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 18 [2024-09-13 09:49:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278531096] [2024-09-13 09:49:50,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:50,147 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 09:49:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 09:49:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:49:50,148 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 5 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-13 09:49:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:50,246 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-13 09:49:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 09:49:50,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 5 states have call predecessors, (12), 10 states have call successors, (12) Word has length 31 [2024-09-13 09:49:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:50,248 INFO L225 Difference]: With dead ends: 45 [2024-09-13 09:49:50,248 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 09:49:50,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-13 09:49:50,249 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:50,249 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 172 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 09:49:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2024-09-13 09:49:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 09:49:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-09-13 09:49:50,256 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2024-09-13 09:49:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:50,256 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-09-13 09:49:50,256 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 10 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 5 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-13 09:49:50,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-09-13 09:49:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 09:49:50,257 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:50,258 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:50,271 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:49:50,458 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:50,459 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:50,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1839833823, now seen corresponding path program 2 times [2024-09-13 09:49:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074556602] [2024-09-13 09:49:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 09:49:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074556602] [2024-09-13 09:49:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074556602] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228558362] [2024-09-13 09:49:50,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:49:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:50,681 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) [2024-09-13 09:49:50,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 09:49:50,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:49:50,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:50,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:49:50,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 09:49:50,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:49:51,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228558362] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:51,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:51,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 19 [2024-09-13 09:49:51,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104798587] [2024-09-13 09:49:51,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:51,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 09:49:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 09:49:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-09-13 09:49:51,343 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-13 09:49:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:51,432 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-09-13 09:49:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 09:49:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 10 states have call successors, (14) Word has length 37 [2024-09-13 09:49:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:51,434 INFO L225 Difference]: With dead ends: 51 [2024-09-13 09:49:51,434 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 09:49:51,434 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-09-13 09:49:51,435 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:51,435 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 131 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 09:49:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-09-13 09:49:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 09:49:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-13 09:49:51,441 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2024-09-13 09:49:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:51,442 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-13 09:49:51,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (14), 6 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-13 09:49:51,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-13 09:49:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 09:49:51,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:51,443 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:51,456 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 09:49:51,646 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:51,647 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:51,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash 342772751, now seen corresponding path program 2 times [2024-09-13 09:49:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:51,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324971079] [2024-09-13 09:49:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 09:49:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324971079] [2024-09-13 09:49:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324971079] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114427228] [2024-09-13 09:49:51,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:49:51,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:51,910 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) [2024-09-13 09:49:51,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 09:49:51,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:49:51,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:51,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 09:49:51,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 09:49:51,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 09:49:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114427228] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:52,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:52,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2024-09-13 09:49:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802749246] [2024-09-13 09:49:52,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:52,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 09:49:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 09:49:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:49:52,115 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 09:49:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:52,190 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2024-09-13 09:49:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 09:49:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2024-09-13 09:49:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:52,191 INFO L225 Difference]: With dead ends: 57 [2024-09-13 09:49:52,191 INFO L226 Difference]: Without dead ends: 53 [2024-09-13 09:49:52,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:49:52,192 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:52,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-13 09:49:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2024-09-13 09:49:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-13 09:49:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-13 09:49:52,206 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2024-09-13 09:49:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:52,206 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-13 09:49:52,206 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 09:49:52,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-13 09:49:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 09:49:52,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:52,209 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:52,226 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 09:49:52,410 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:52,410 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:52,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 872362609, now seen corresponding path program 3 times [2024-09-13 09:49:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:52,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466506556] [2024-09-13 09:49:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 09:49:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466506556] [2024-09-13 09:49:52,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466506556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507266362] [2024-09-13 09:49:52,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:49:52,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:52,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:52,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:49:52,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 09:49:52,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 09:49:52,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:52,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 09:49:52,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 09:49:52,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:49:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507266362] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:49:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 09:49:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 16 [2024-09-13 09:49:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611619477] [2024-09-13 09:49:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:49:52,757 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 09:49:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 09:49:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-09-13 09:49:52,758 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 09:49:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:52,877 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-09-13 09:49:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 09:49:52,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2024-09-13 09:49:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:52,878 INFO L225 Difference]: With dead ends: 63 [2024-09-13 09:49:52,878 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 09:49:52,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-09-13 09:49:52,879 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:52,879 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 183 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:49:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 09:49:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 09:49:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-13 09:49:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-13 09:49:52,896 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 49 [2024-09-13 09:49:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:52,896 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-13 09:49:52,896 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 09:49:52,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-13 09:49:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-13 09:49:52,897 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:52,897 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:52,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 09:49:53,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 09:49:53,102 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:53,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1842056993, now seen corresponding path program 3 times [2024-09-13 09:49:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:53,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390935232] [2024-09-13 09:49:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:53,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 09:49:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-13 09:49:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390935232] [2024-09-13 09:49:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390935232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028973646] [2024-09-13 09:49:53,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:49:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:53,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:53,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:49:53,389 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 09:49:53,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 09:49:53,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:53,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-13 09:49:53,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 09:49:53,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:49:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028973646] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:49:53,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 09:49:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 17 [2024-09-13 09:49:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938142998] [2024-09-13 09:49:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:49:53,507 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 09:49:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 09:49:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-09-13 09:49:53,508 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (5), 1 states have call predecessors, (5), 9 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 09:49:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:53,603 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2024-09-13 09:49:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 09:49:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (5), 1 states have call predecessors, (5), 9 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2024-09-13 09:49:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:53,605 INFO L225 Difference]: With dead ends: 39 [2024-09-13 09:49:53,605 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:49:53,605 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:49:53,606 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:53,606 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:49:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:49:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:49:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 09:49:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:49:53,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2024-09-13 09:49:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:53,607 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:49:53,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (5), 1 states have call predecessors, (5), 9 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 09:49:53,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:49:53,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:49:53,610 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:49:53,622 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 09:49:53,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:53,816 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1] [2024-09-13 09:49:53,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:49:54,681 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:49:54,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:49:54 BoogieIcfgContainer [2024-09-13 09:49:54,718 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:49:54,719 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:49:54,719 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:49:54,719 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:49:54,719 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:49:47" (3/4) ... [2024-09-13 09:49:54,721 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:49:54,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:49:54,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2024-09-13 09:49:54,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:49:54,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2024-09-13 09:49:54,726 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-13 09:49:54,726 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 09:49:54,727 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-13 09:49:54,727 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:49:54,788 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:49:54,788 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:49:54,788 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:49:54,789 INFO L158 Benchmark]: Toolchain (without parser) took 7468.84ms. Allocated memory was 132.1MB in the beginning and 211.8MB in the end (delta: 79.7MB). Free memory was 79.7MB in the beginning and 177.6MB in the end (delta: -97.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:49:54,789 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:49:54,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.31ms. Allocated memory is still 132.1MB. Free memory was 79.7MB in the beginning and 68.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 09:49:54,790 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.70ms. Allocated memory is still 132.1MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:49:54,790 INFO L158 Benchmark]: Boogie Preprocessor took 26.61ms. Allocated memory is still 132.1MB. Free memory was 67.4MB in the beginning and 66.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:49:54,790 INFO L158 Benchmark]: RCFGBuilder took 254.18ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 66.0MB in the beginning and 143.2MB in the end (delta: -77.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-09-13 09:49:54,790 INFO L158 Benchmark]: TraceAbstraction took 6909.57ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 143.2MB in the beginning and 182.9MB in the end (delta: -39.7MB). Peak memory consumption was 123.0MB. Max. memory is 16.1GB. [2024-09-13 09:49:54,790 INFO L158 Benchmark]: Witness Printer took 69.89ms. Allocated memory is still 211.8MB. Free memory was 182.9MB in the beginning and 177.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:49:54,791 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.31ms. Allocated memory is still 132.1MB. Free memory was 79.7MB in the beginning and 68.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.70ms. Allocated memory is still 132.1MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.61ms. Allocated memory is still 132.1MB. Free memory was 67.4MB in the beginning and 66.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.18ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 66.0MB in the beginning and 143.2MB in the end (delta: -77.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6909.57ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 143.2MB in the beginning and 182.9MB in the end (delta: -39.7MB). Peak memory consumption was 123.0MB. Max. memory is 16.1GB. * Witness Printer took 69.89ms. Allocated memory is still 211.8MB. Free memory was 182.9MB in the beginning and 177.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 23]: 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 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 1341 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1160 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 679 IncrementalHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 181 mSDtfsCounter, 679 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 414 SyntacticMatches, 13 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, InterpolantAutomatonStates: 83, 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, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 630 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 SizeOfPredicates, 22 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 295/426 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 - ProcedureContractResult [Line: 14]: Procedure Contract for id2 Derived contract for procedure id2. Ensures: ((((((\old(x) == 0) && (\result == 0)) || (\old(x) == 1)) || (((\result == 2) && (\old(x) <= 3)) && (2 <= \old(x)))) || (4 < \old(x))) || (((3 == \old(x)) || (\result == 4)) && (3 <= \old(x)))) - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id. Ensures: ((((((\old(x) == 0) || (\old(x) == 4)) || ((5 == \result) && (5 == \old(x)))) || ((((3 == \result) && (\old(x) <= 4)) || (\old(x) == 2)) && (2 <= \old(x)))) || (((\result == 1) && (\old(x) <= 2)) && (1 <= \old(x)))) || (5 < \old(x))) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:49:54,812 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE